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Posted to commits@nutch.apache.org by sn...@apache.org on 2026/02/17 15:57:19 UTC

(nutch-site) 02/07: Update API docs from 1.22 source package - replace Javadoc tree - update nutch-default.xml

This is an automated email from the ASF dual-hosted git repository.

snagel pushed a commit to branch main
in repository https://gitbox.apache.org/repos/asf/nutch-site.git

commit 9009dc6fa8f97226b877dae5f2b6c05e9858cd47
Author: Sebastian Nagel <sn...@apache.org>
AuthorDate: Tue Feb 17 13:07:29 2026 +0100

    Update API docs from 1.22 source package
    - replace Javadoc tree
    - update nutch-default.xml
---
 .../javadoc/api/allclasses-index.html              |  811 +++----
 content/documentation/javadoc/api/allclasses.html  |   11 +-
 .../javadoc/api/allpackages-index.html             |  154 +-
 .../documentation/javadoc/api/constant-values.html |  703 +++++-
 .../documentation/javadoc/api/deprecated-list.html |   14 +-
 content/documentation/javadoc/api/element-list     |    1 +
 content/documentation/javadoc/api/help-doc.html    |   10 +-
 content/documentation/javadoc/api/index-all.html   |  641 +++++-
 content/documentation/javadoc/api/index.html       |  158 +-
 .../javadoc/api/jquery/jquery-ui.min.css           |    8 +-
 .../javadoc/api/jquery/jquery-ui.min.js            |    8 +-
 .../documentation/javadoc/api/legal/jqueryUI.md    |    4 +-
 .../javadoc/api/member-search-index.js             |    2 +-
 .../javadoc/api/member-search-index.zip            |  Bin 40145 -> 41968 bytes
 .../nutch/analysis/lang/HTMLLanguageParser.html    |   24 +-
 .../analysis/lang/LanguageIndexingFilter.html      |   28 +-
 .../lang/class-use/HTMLLanguageParser.html         |   10 +-
 .../lang/class-use/LanguageIndexingFilter.html     |   10 +-
 .../nutch/analysis/lang/package-summary.html       |   10 +-
 .../apache/nutch/analysis/lang/package-tree.html   |   10 +-
 .../apache/nutch/analysis/lang/package-use.html    |   10 +-
 .../apache/nutch/collection/CollectionManager.html |   28 +-
 .../org/apache/nutch/collection/Subcollection.html |   40 +-
 .../collection/class-use/CollectionManager.html    |   12 +-
 .../nutch/collection/class-use/Subcollection.html  |   10 +-
 .../apache/nutch/collection/package-summary.html   |   10 +-
 .../org/apache/nutch/collection/package-tree.html  |   12 +-
 .../org/apache/nutch/collection/package-use.html   |   10 +-
 .../apache/nutch/crawl/AbstractFetchSchedule.html  |   60 +-
 .../apache/nutch/crawl/AdaptiveFetchSchedule.html  |   40 +-
 .../apache/nutch/crawl/CrawlDatum.Comparator.html  |   24 +-
 .../api/org/apache/nutch/crawl/CrawlDatum.html     |   26 +-
 .../api/org/apache/nutch/crawl/CrawlDb.html        |   74 +-
 .../api/org/apache/nutch/crawl/CrawlDbFilter.html  |   38 +-
 .../apache/nutch/crawl/CrawlDbMerger.Merger.html   |   38 +-
 .../api/org/apache/nutch/crawl/CrawlDbMerger.html  |   50 +-
 ...CrawlDatumCsvOutputFormat.LineRecordWriter.html |   26 +-
 .../CrawlDbReader.CrawlDatumCsvOutputFormat.html   |   36 +-
 ...rawlDatumJsonOutputFormat.LineRecordWriter.html |   26 +-
 ...wlDatumJsonOutputFormat.WritableSerializer.html |   22 +-
 .../CrawlDbReader.CrawlDatumJsonOutputFormat.html  |   36 +-
 .../crawl/CrawlDbReader.CrawlDbDumpMapper.html     |   38 +-
 .../crawl/CrawlDbReader.CrawlDbStatMapper.html     |   38 +-
 .../crawl/CrawlDbReader.CrawlDbStatReducer.html    |   38 +-
 .../crawl/CrawlDbReader.CrawlDbTopNMapper.html     |   38 +-
 .../crawl/CrawlDbReader.CrawlDbTopNReducer.html    |   42 +-
 .../nutch/crawl/CrawlDbReader.JsonIndenter.html    |   10 +-
 .../api/org/apache/nutch/crawl/CrawlDbReader.html  |   48 +-
 .../api/org/apache/nutch/crawl/CrawlDbReducer.html |   38 +-
 .../nutch/crawl/DeduplicationJob.DBFilter.html     |   38 +-
 .../nutch/crawl/DeduplicationJob.DedupReducer.html |   42 +-
 .../DeduplicationJob.StatusUpdateReducer.html      |   38 +-
 .../org/apache/nutch/crawl/DeduplicationJob.html   |   32 +-
 .../apache/nutch/crawl/DefaultFetchSchedule.html   |   26 +-
 .../api/org/apache/nutch/crawl/FetchSchedule.html  |   42 +-
 .../apache/nutch/crawl/FetchScheduleFactory.html   |   20 +-
 ...nerator.CrawlDbUpdater.CrawlDbUpdateMapper.html |   32 +-
 ...erator.CrawlDbUpdater.CrawlDbUpdateReducer.html |   38 +-
 .../nutch/crawl/Generator.CrawlDbUpdater.html      |   10 +-
 .../crawl/Generator.DecreasingFloatComparator.html |   26 +-
 .../nutch/crawl/Generator.HashComparator.html      |   34 +-
 .../nutch/crawl/Generator.PartitionReducer.html    |   32 +-
 .../org/apache/nutch/crawl/Generator.Selector.html |   40 +-
 .../nutch/crawl/Generator.SelectorEntry.html       |   26 +-
 .../crawl/Generator.SelectorInverseMapper.html     |   32 +-
 .../nutch/crawl/Generator.SelectorMapper.html      |   38 +-
 .../nutch/crawl/Generator.SelectorReducer.html     |   44 +-
 .../api/org/apache/nutch/crawl/Generator.html      |   70 +-
 .../apache/nutch/crawl/Injector.InjectMapper.html  |   42 +-
 .../apache/nutch/crawl/Injector.InjectReducer.html |   38 +-
 .../api/org/apache/nutch/crawl/Injector.html       |   54 +-
 .../javadoc/api/org/apache/nutch/crawl/Inlink.html |   26 +-
 .../api/org/apache/nutch/crawl/Inlinks.html        |   18 +-
 .../apache/nutch/crawl/LinkDb.LinkDbMapper.html    |   38 +-
 .../javadoc/api/org/apache/nutch/crawl/LinkDb.html |   54 +-
 .../api/org/apache/nutch/crawl/LinkDbFilter.html   |   38 +-
 .../crawl/LinkDbMerger.LinkDbMergeReducer.html     |   38 +-
 .../api/org/apache/nutch/crawl/LinkDbMerger.html   |   50 +-
 .../nutch/crawl/LinkDbReader.LinkDBDumpMapper.html |   38 +-
 .../api/org/apache/nutch/crawl/LinkDbReader.html   |   44 +-
 .../api/org/apache/nutch/crawl/MD5Signature.html   |   12 +-
 .../nutch/crawl/MimeAdaptiveFetchSchedule.html     |   32 +-
 .../api/org/apache/nutch/crawl/NutchWritable.html  |   28 +-
 .../api/org/apache/nutch/crawl/Signature.html      |   30 +-
 .../apache/nutch/crawl/SignatureComparator.html    |   10 +-
 .../org/apache/nutch/crawl/SignatureFactory.html   |   20 +-
 .../org/apache/nutch/crawl/TextMD5Signature.html   |   12 +-
 .../apache/nutch/crawl/TextProfileSignature.html   |   18 +-
 .../api/org/apache/nutch/crawl/URLPartitioner.html |   40 +-
 .../crawl/class-use/AbstractFetchSchedule.html     |   10 +-
 .../crawl/class-use/AdaptiveFetchSchedule.html     |   10 +-
 .../crawl/class-use/CrawlDatum.Comparator.html     |   10 +-
 .../apache/nutch/crawl/class-use/CrawlDatum.html   |  460 ++--
 .../org/apache/nutch/crawl/class-use/CrawlDb.html  |   10 +-
 .../nutch/crawl/class-use/CrawlDbFilter.html       |   10 +-
 .../crawl/class-use/CrawlDbMerger.Merger.html      |   10 +-
 .../nutch/crawl/class-use/CrawlDbMerger.html       |   10 +-
 ...CrawlDatumCsvOutputFormat.LineRecordWriter.html |   10 +-
 .../CrawlDbReader.CrawlDatumCsvOutputFormat.html   |   10 +-
 ...rawlDatumJsonOutputFormat.LineRecordWriter.html |   10 +-
 ...wlDatumJsonOutputFormat.WritableSerializer.html |   10 +-
 .../CrawlDbReader.CrawlDatumJsonOutputFormat.html  |   10 +-
 .../class-use/CrawlDbReader.CrawlDbDumpMapper.html |   10 +-
 .../class-use/CrawlDbReader.CrawlDbStatMapper.html |   10 +-
 .../CrawlDbReader.CrawlDbStatReducer.html          |   10 +-
 .../class-use/CrawlDbReader.CrawlDbTopNMapper.html |   10 +-
 .../CrawlDbReader.CrawlDbTopNReducer.html          |   10 +-
 .../class-use/CrawlDbReader.JsonIndenter.html      |   10 +-
 .../nutch/crawl/class-use/CrawlDbReader.html       |   10 +-
 .../nutch/crawl/class-use/CrawlDbReducer.html      |   10 +-
 .../crawl/class-use/DeduplicationJob.DBFilter.html |   10 +-
 .../class-use/DeduplicationJob.DedupReducer.html   |   10 +-
 .../DeduplicationJob.StatusUpdateReducer.html      |   10 +-
 .../nutch/crawl/class-use/DeduplicationJob.html    |   10 +-
 .../crawl/class-use/DefaultFetchSchedule.html      |   10 +-
 .../nutch/crawl/class-use/FetchSchedule.html       |   14 +-
 .../crawl/class-use/FetchScheduleFactory.html      |   10 +-
 ...nerator.CrawlDbUpdater.CrawlDbUpdateMapper.html |   10 +-
 ...erator.CrawlDbUpdater.CrawlDbUpdateReducer.html |   10 +-
 .../crawl/class-use/Generator.CrawlDbUpdater.html  |   10 +-
 .../Generator.DecreasingFloatComparator.html       |   10 +-
 .../crawl/class-use/Generator.HashComparator.html  |   10 +-
 .../class-use/Generator.PartitionReducer.html      |   10 +-
 .../nutch/crawl/class-use/Generator.Selector.html  |   10 +-
 .../crawl/class-use/Generator.SelectorEntry.html   |   26 +-
 .../class-use/Generator.SelectorInverseMapper.html |   10 +-
 .../crawl/class-use/Generator.SelectorMapper.html  |   10 +-
 .../crawl/class-use/Generator.SelectorReducer.html |   10 +-
 .../apache/nutch/crawl/class-use/Generator.html    |   10 +-
 .../crawl/class-use/Injector.InjectMapper.html     |   10 +-
 .../crawl/class-use/Injector.InjectReducer.html    |   10 +-
 .../org/apache/nutch/crawl/class-use/Injector.html |   10 +-
 .../org/apache/nutch/crawl/class-use/Inlink.html   |   10 +-
 .../org/apache/nutch/crawl/class-use/Inlinks.html  |   76 +-
 .../nutch/crawl/class-use/LinkDb.LinkDbMapper.html |   10 +-
 .../org/apache/nutch/crawl/class-use/LinkDb.html   |   10 +-
 .../apache/nutch/crawl/class-use/LinkDbFilter.html |   10 +-
 .../class-use/LinkDbMerger.LinkDbMergeReducer.html |   10 +-
 .../apache/nutch/crawl/class-use/LinkDbMerger.html |   10 +-
 .../class-use/LinkDbReader.LinkDBDumpMapper.html   |   10 +-
 .../apache/nutch/crawl/class-use/LinkDbReader.html |   10 +-
 .../apache/nutch/crawl/class-use/MD5Signature.html |   10 +-
 .../crawl/class-use/MimeAdaptiveFetchSchedule.html |   10 +-
 .../nutch/crawl/class-use/NutchWritable.html       |   38 +-
 .../apache/nutch/crawl/class-use/Signature.html    |   14 +-
 .../nutch/crawl/class-use/SignatureComparator.html |   10 +-
 .../nutch/crawl/class-use/SignatureFactory.html    |   10 +-
 .../nutch/crawl/class-use/TextMD5Signature.html    |   10 +-
 .../crawl/class-use/TextProfileSignature.html      |   10 +-
 .../nutch/crawl/class-use/URLPartitioner.html      |   10 +-
 .../org/apache/nutch/crawl/package-summary.html    |   12 +-
 .../api/org/apache/nutch/crawl/package-tree.html   |   64 +-
 .../api/org/apache/nutch/crawl/package-use.html    |   10 +-
 .../api/org/apache/nutch/exchange/Exchange.html    |   18 +-
 .../org/apache/nutch/exchange/ExchangeConfig.html  |   10 +-
 .../api/org/apache/nutch/exchange/Exchanges.html   |   14 +-
 .../apache/nutch/exchange/class-use/Exchange.html  |   10 +-
 .../nutch/exchange/class-use/ExchangeConfig.html   |   10 +-
 .../apache/nutch/exchange/class-use/Exchanges.html |   10 +-
 .../apache/nutch/exchange/jexl/JexlExchange.html   |   24 +-
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 .../nutch/exchange/jexl/package-summary.html       |   10 +-
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 .../org/apache/nutch/exchange/package-tree.html    |   14 +-
 .../api/org/apache/nutch/exchange/package-use.html |   10 +-
 .../api/org/apache/nutch/fetcher/FetchItem.html    |   30 +-
 .../org/apache/nutch/fetcher/FetchItemQueue.html   |   22 +-
 .../org/apache/nutch/fetcher/FetchItemQueues.html  |   22 +-
 .../api/org/apache/nutch/fetcher/FetchNode.html    |   18 +-
 .../api/org/apache/nutch/fetcher/FetchNodeDb.html  |   10 +-
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 .../apache/nutch/fetcher/Fetcher.InputFormat.html  |   42 +-
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 .../FetcherThreadEvent.PublishEventType.html       |   10 +-
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 .../api/org/apache/nutch/fetcher/package-tree.html |   26 +-
 .../api/org/apache/nutch/fetcher/package-use.html  |   10 +-
 .../apache/nutch/hostdb/CrawlDatumProcessor.html   |   10 +-
 .../hostdb/FetchOverdueCrawlDatumProcessor.html    |   18 +-
 .../api/org/apache/nutch/hostdb/HostDatum.html     |   32 +-
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 .../apache/nutch/hostdb/UpdateHostDbMapper.html    |   82 +-
 .../apache/nutch/hostdb/UpdateHostDbReducer.html   |   98 +-
 .../hostdb/class-use/CrawlDatumProcessor.html      |   10 +-
 .../class-use/FetchOverdueCrawlDatumProcessor.html |   10 +-
 .../apache/nutch/hostdb/class-use/HostDatum.html   |   12 +-
 .../apache/nutch/hostdb/class-use/ReadHostDb.html  |   10 +-
 .../nutch/hostdb/class-use/ResolverThread.html     |   10 +-
 .../nutch/hostdb/class-use/UpdateHostDb.html       |   10 +-
 .../nutch/hostdb/class-use/UpdateHostDbMapper.html |   10 +-
 .../hostdb/class-use/UpdateHostDbReducer.html      |   10 +-
 .../org/apache/nutch/hostdb/package-summary.html   |   10 +-
 .../api/org/apache/nutch/hostdb/package-tree.html  |   22 +-
 .../api/org/apache/nutch/hostdb/package-use.html   |   10 +-
 .../apache/nutch/indexer/CleaningJob.DBFilter.html |   32 +-
 .../nutch/indexer/CleaningJob.DeleterReducer.html  |   48 +-
 .../api/org/apache/nutch/indexer/CleaningJob.html  |   28 +-
 .../api/org/apache/nutch/indexer/IndexWriter.html  |   22 +-
 .../apache/nutch/indexer/IndexWriterConfig.html    |   10 +-
 .../apache/nutch/indexer/IndexWriterParams.html    |   10 +-
 .../indexer/IndexWriters.IndexWriterWrapper.html   |   10 +-
 .../api/org/apache/nutch/indexer/IndexWriters.html |   18 +-
 .../indexer/IndexerMapReduce.IndexerMapper.html    |   42 +-
 .../indexer/IndexerMapReduce.IndexerReducer.html   |   65 +-
 .../org/apache/nutch/indexer/IndexerMapReduce.html |   36 +-
 .../apache/nutch/indexer/IndexerOutputFormat.html  |   36 +-
 .../apache/nutch/indexer/IndexingException.html    |   10 +-
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 .../org/apache/nutch/indexer/IndexingFilters.html  |   20 +-
 .../nutch/indexer/IndexingFiltersChecker.html      |   22 +-
 .../api/org/apache/nutch/indexer/IndexingJob.html  |  102 +-
 .../org/apache/nutch/indexer/NutchDocument.html    |   18 +-
 .../api/org/apache/nutch/indexer/NutchField.html   |   18 +-
 .../org/apache/nutch/indexer/NutchIndexAction.html |   18 +-
 .../nutch/indexer/anchor/AnchorIndexingFilter.html |   36 +-
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 .../nutch/indexer/class-use/IndexWriter.html       |   10 +-
 .../nutch/indexer/class-use/IndexWriterConfig.html |   10 +-
 .../nutch/indexer/class-use/IndexWriterParams.html |   10 +-
 .../class-use/IndexWriters.IndexWriterWrapper.html |   10 +-
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 .../indexer/class-use/IndexerOutputFormat.html     |   10 +-
 .../nutch/indexer/class-use/IndexingException.html |   50 +-
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 .../nutch/indexer/metadata/MetadataIndexer.html    |   28 +-
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 .../nutch/indexer/metadata/package-summary.html    |   10 +-
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 .../nutch/indexer/more/MoreIndexingFilter.html     |   28 +-
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 .../apache/nutch/indexer/more/package-summary.html |   10 +-
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 .../indexer/staticfield/StaticFieldIndexer.html    |   36 +-
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+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>All Classes (apache-nutch 1.22 API)</title>
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 </tr>
 <tr id="i78" class="altColor">
-<td class="colFirst"><a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="class in org.apache.nutch.crawl">DeduplicationJob.DedupReducer</a>&lt;<a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="type parameter in DeduplicationJob.DedupReducer">K</a> extends <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/io/Writable.html?is-external=true" title="class or interface in org.apache.hadoop.io" class="externalLink">Writable</a> [...]
+<td class="colFirst"><a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="class in org.apache.nutch.crawl">DeduplicationJob.DedupReducer</a>&lt;<a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="type parameter in DeduplicationJob.DedupReducer">K</a> extends <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/io/Writable.html?is-external=true" title="class or interface in org.apache.hadoop.io" class="externalLink">Writable</a> [...]
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
 <tr id="i79" class="rowColor">
@@ -613,10 +613,6 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
 <tr id="i91" class="rowColor">
-<td class="colFirst"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></td>
-<th class="colLast" scope="row">&nbsp;</th>
-</tr>
-<tr id="i92" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/domain/DomainURLFilter.html" title="class in org.apache.nutch.urlfilter.domain">DomainURLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -624,106 +620,118 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  hostnames.</div>
 </th>
 </tr>
-<tr id="i93" class="rowColor">
+<tr id="i92" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/DOMBuilder.html" title="class in org.apache.nutch.parse.html">DOMBuilder</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class takes SAX events (in addition to some extra events that SAX
  doesn't handle yet) and adds the result to a document or document fragment.</div>
 </th>
 </tr>
-<tr id="i94" class="altColor">
+<tr id="i93" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/DOMContentUtils.html" title="class in org.apache.nutch.parse.html">DOMContentUtils</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of methods for extracting content from DOM trees.</div>
 </th>
 </tr>
-<tr id="i95" class="rowColor">
+<tr id="i94" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/tika/DOMContentUtils.html" title="class in org.apache.nutch.parse.tika">DOMContentUtils</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of methods for extracting content from DOM trees.</div>
 </th>
 </tr>
-<tr id="i96" class="altColor">
+<tr id="i95" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/DOMContentUtils.LinkParams.html" title="class in org.apache.nutch.parse.html">DOMContentUtils.LinkParams</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i97" class="rowColor">
+<tr id="i96" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/DomUtil.html" title="class in org.apache.nutch.util">DomUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i98" class="altColor">
+<tr id="i97" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/DublinCore.html" title="interface in org.apache.nutch.metadata">DublinCore</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of Dublin Core metadata names.</div>
 </th>
 </tr>
-<tr id="i99" class="rowColor">
+<tr id="i98" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/dummy/DummyConstants.html" title="interface in org.apache.nutch.indexwriter.dummy">DummyConstants</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i100" class="altColor">
+<tr id="i99" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/dummy/DummyIndexWriter.html" title="class in org.apache.nutch.indexwriter.dummy">DummyIndexWriter</a></td>
 <th class="colLast" scope="row">
 <div class="block">DummyIndexWriter.</div>
 </th>
 </tr>
-<tr id="i101" class="rowColor">
+<tr id="i100" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/DummySSLProtocolSocketFactory.html" title="class in org.apache.nutch.protocol.httpclient">DummySSLProtocolSocketFactory</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i102" class="altColor">
+<tr id="i101" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/DummyX509TrustManager.html" title="class in org.apache.nutch.protocol.htmlunit">DummyX509TrustManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i103" class="rowColor">
+<tr id="i102" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/DummyX509TrustManager.html" title="class in org.apache.nutch.protocol.http">DummyX509TrustManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i104" class="altColor">
+<tr id="i103" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/DummyX509TrustManager.html" title="class in org.apache.nutch.protocol.httpclient">DummyX509TrustManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i105" class="rowColor">
+<tr id="i104" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/interactiveselenium/DummyX509TrustManager.html" title="class in org.apache.nutch.protocol.interactiveselenium">DummyX509TrustManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i106" class="altColor">
+<tr id="i105" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/selenium/DummyX509TrustManager.html" title="class in org.apache.nutch.protocol.selenium">DummyX509TrustManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i107" class="rowColor">
+<tr id="i106" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/DumpFileUtil.html" title="class in org.apache.nutch.util">DumpFileUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i108" class="altColor">
+<tr id="i107" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/elastic/ElasticConstants.html" title="interface in org.apache.nutch.indexwriter.elastic">ElasticConstants</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i109" class="rowColor">
+<tr id="i108" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/elastic/ElasticIndexWriter.html" title="class in org.apache.nutch.indexwriter.elastic">ElasticIndexWriter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Sends NutchDocuments to a configured Elasticsearch index.</div>
 </th>
 </tr>
-<tr id="i110" class="altColor">
+<tr id="i109" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/EncodingDetector.html" title="class in org.apache.nutch.util">EncodingDetector</a></td>
 <th class="colLast" scope="row">
 <div class="block">A simple class for detecting character encodings.</div>
 </th>
 </tr>
+<tr id="i110" class="altColor">
+<td class="colFirst"><a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></td>
+<th class="colLast" scope="row">
+<div class="block">A utility class for tracking errors by category with automatic classification.</div>
+</th>
+</tr>
 <tr id="i111" class="rowColor">
+<td class="colFirst"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></td>
+<th class="colLast" scope="row">
+<div class="block">Error type categories for classification.</div>
+</th>
+</tr>
+<tr id="i112" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/exchange/Exchange.html" title="interface in org.apache.nutch.exchange">Exchange</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i112" class="altColor">
+<tr id="i113" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/exchange/ExchangeConfig.html" title="class in org.apache.nutch.exchange">ExchangeConfig</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i113" class="rowColor">
+<tr id="i114" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/exchange/Exchanges.html" title="class in org.apache.nutch.exchange">Exchanges</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i114" class="altColor">
+<tr id="i115" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/ignoreexempt/ExemptionUrlFilter.html" title="class in org.apache.nutch.urlfilter.ignoreexempt">ExemptionUrlFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This implementation of <a href="org/apache/nutch/net/URLExemptionFilter.html" title="interface in org.apache.nutch.net"><code>URLExemptionFilter</code></a> 
@@ -731,7 +739,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  the <code>db.ignore.external.links</code> configuration property.</div>
 </th>
 </tr>
-<tr id="i115" class="rowColor">
+<tr id="i116" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/Extension.html" title="class in org.apache.nutch.plugin">Extension</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <code>Extension</code> is a kind of listener descriptor that will be
@@ -739,340 +747,340 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  Publisher.</div>
 </th>
 </tr>
-<tr id="i116" class="altColor">
+<tr id="i117" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/ExtensionPoint.html" title="class in org.apache.nutch.plugin">ExtensionPoint</a></td>
 <th class="colLast" scope="row">
 <div class="block">The <code>ExtensionPoint</code> provide meta information of a extension
  point.</div>
 </th>
 </tr>
-<tr id="i117" class="rowColor">
+<tr id="i118" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ext/ExtParser.html" title="class in org.apache.nutch.parse.ext">ExtParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">A wrapper that invokes external command to do real parsing job.</div>
 </th>
 </tr>
-<tr id="i118" class="altColor">
+<tr id="i119" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/fast/FastURLFilter.html" title="class in org.apache.nutch.urlfilter.fast">FastURLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Filters URLs based on a file of regular expressions using host/domains
  matching first.</div>
 </th>
 </tr>
-<tr id="i119" class="rowColor">
+<tr id="i120" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/fast/FastURLFilter.DenyAllRule.html" title="class in org.apache.nutch.urlfilter.fast">FastURLFilter.DenyAllRule</a></td>
 <th class="colLast" scope="row">
 <div class="block">Rule for <code>DenyPath .*</code> or <code>DenyPath .?</code></div>
 </th>
 </tr>
-<tr id="i120" class="altColor">
+<tr id="i121" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/fast/FastURLFilter.DenyPathQueryRule.html" title="class in org.apache.nutch.urlfilter.fast">FastURLFilter.DenyPathQueryRule</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i121" class="rowColor">
+<tr id="i122" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/fast/FastURLFilter.DenyPathRule.html" title="class in org.apache.nutch.urlfilter.fast">FastURLFilter.DenyPathRule</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i122" class="altColor">
+<tr id="i123" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/fast/FastURLFilter.Rule.html" title="class in org.apache.nutch.urlfilter.fast">FastURLFilter.Rule</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i123" class="rowColor">
+<tr id="i124" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/Feed.html" title="interface in org.apache.nutch.metadata">Feed</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of Feed property names extracted by the ROME library.</div>
 </th>
 </tr>
-<tr id="i124" class="altColor">
+<tr id="i125" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/feed/FeedIndexingFilter.html" title="class in org.apache.nutch.indexer.feed">FeedIndexingFilter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i125" class="rowColor">
+<tr id="i126" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/feed/FeedParser.html" title="class in org.apache.nutch.parse.feed">FeedParser</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i126" class="altColor">
+<tr id="i127" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/Fetcher.html" title="class in org.apache.nutch.fetcher">Fetcher</a></td>
 <th class="colLast" scope="row">
 <div class="block">A queue-based fetcher.</div>
 </th>
 </tr>
-<tr id="i127" class="rowColor">
+<tr id="i128" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/Fetcher.FetcherRun.html" title="class in org.apache.nutch.fetcher">Fetcher.FetcherRun</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i128" class="altColor">
+<tr id="i129" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/Fetcher.InputFormat.html" title="class in org.apache.nutch.fetcher">Fetcher.InputFormat</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i129" class="rowColor">
+<tr id="i130" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetcherOutputFormat.html" title="class in org.apache.nutch.fetcher">FetcherOutputFormat</a></td>
 <th class="colLast" scope="row">
 <div class="block">Splits FetcherOutput entries into multiple map files.</div>
 </th>
 </tr>
-<tr id="i130" class="altColor">
+<tr id="i131" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetcherThread.html" title="class in org.apache.nutch.fetcher">FetcherThread</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class picks items from queues and fetches the pages.</div>
 </th>
 </tr>
-<tr id="i131" class="rowColor">
+<tr id="i132" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetcherThreadEvent.html" title="class in org.apache.nutch.fetcher">FetcherThreadEvent</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is used to capture the various events occurring 
  at fetch time.</div>
 </th>
 </tr>
-<tr id="i132" class="altColor">
+<tr id="i133" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetcherThreadEvent.PublishEventType.html" title="enum in org.apache.nutch.fetcher">FetcherThreadEvent.PublishEventType</a></td>
 <th class="colLast" scope="row">
 <div class="block">Type of event to specify start, end or reporting of a fetch item.</div>
 </th>
 </tr>
-<tr id="i133" class="rowColor">
+<tr id="i134" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetcherThreadPublisher.html" title="class in org.apache.nutch.fetcher">FetcherThreadPublisher</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class handles the publishing of the events to the queue implementation.</div>
 </th>
 </tr>
-<tr id="i134" class="altColor">
+<tr id="i135" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetchItem.html" title="class in org.apache.nutch.fetcher">FetchItem</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class describes the item to be fetched.</div>
 </th>
 </tr>
-<tr id="i135" class="rowColor">
+<tr id="i136" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetchItemQueue.html" title="class in org.apache.nutch.fetcher">FetchItemQueue</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class handles FetchItems which come from the same host ID (be it a
  proto/hostname or proto/IP pair).</div>
 </th>
 </tr>
-<tr id="i136" class="altColor">
+<tr id="i137" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetchItemQueues.html" title="class in org.apache.nutch.fetcher">FetchItemQueues</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of queues that keeps track of the total number of items, and
  provides items eligible for fetching from any queue.</div>
 </th>
 </tr>
-<tr id="i137" class="rowColor">
+<tr id="i138" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetchNode.html" title="class in org.apache.nutch.fetcher">FetchNode</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i138" class="altColor">
+<tr id="i139" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/FetchNodeDb.html" title="class in org.apache.nutch.fetcher">FetchNodeDb</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i139" class="rowColor">
+<tr id="i140" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/response/FetchNodeDbInfo.html" title="class in org.apache.nutch.service.model.response">FetchNodeDbInfo</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i140" class="altColor">
+<tr id="i141" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/FetchOverdueCrawlDatumProcessor.html" title="class in org.apache.nutch.hostdb">FetchOverdueCrawlDatumProcessor</a></td>
 <th class="colLast" scope="row">
 <div class="block">Simple custom crawl datum processor that counts the number of records that
  are overdue for fetching, e.g.</div>
 </th>
 </tr>
-<tr id="i141" class="rowColor">
+<tr id="i142" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/FetchSchedule.html" title="interface in org.apache.nutch.crawl">FetchSchedule</a></td>
 <th class="colLast" scope="row">
 <div class="block">This interface defines the contract for implementations that manipulate fetch
  times and re-fetch intervals.</div>
 </th>
 </tr>
-<tr id="i142" class="altColor">
+<tr id="i143" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/FetchScheduleFactory.html" title="class in org.apache.nutch.crawl">FetchScheduleFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches a <a href="org/apache/nutch/crawl/FetchSchedule.html" title="interface in org.apache.nutch.crawl"><code>FetchSchedule</code></a> implementation.</div>
 </th>
 </tr>
-<tr id="i143" class="rowColor">
+<tr id="i144" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/replace/FieldReplacer.html" title="class in org.apache.nutch.indexer.replace">FieldReplacer</a></td>
 <th class="colLast" scope="row">
 <div class="block">POJO to store a filename, its match pattern and its replacement string.</div>
 </th>
 </tr>
-<tr id="i144" class="altColor">
+<tr id="i145" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/file/File.html" title="class in org.apache.nutch.protocol.file">File</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is a protocol plugin used for file: scheme.</div>
 </th>
 </tr>
-<tr id="i145" class="rowColor">
+<tr id="i146" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/FileDumper.html" title="class in org.apache.nutch.tools">FileDumper</a></td>
 <th class="colLast" scope="row">
 <div class="block">The file dumper tool enables one to reverse generate the raw content from
  Nutch segment data directories.</div>
 </th>
 </tr>
-<tr id="i146" class="altColor">
+<tr id="i147" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/file/FileError.html" title="class in org.apache.nutch.protocol.file">FileError</a></td>
 <th class="colLast" scope="row">
 <div class="block">Thrown for File error codes.</div>
 </th>
 </tr>
-<tr id="i147" class="rowColor">
+<tr id="i148" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/file/FileException.html" title="class in org.apache.nutch.protocol.file">FileException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i148" class="altColor">
+<tr id="i149" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/file/FileResponse.html" title="class in org.apache.nutch.protocol.file">FileResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">FileResponse.java mimics file replies as http response.</div>
 </th>
 </tr>
-<tr id="i149" class="rowColor">
+<tr id="i150" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/FreeGenerator.html" title="class in org.apache.nutch.tools">FreeGenerator</a></td>
 <th class="colLast" scope="row">
 <div class="block">This tool generates fetchlists (segments to be fetched) from plain text files
  containing one URL per line.</div>
 </th>
 </tr>
-<tr id="i150" class="altColor">
+<tr id="i151" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/FreeGenerator.FG.html" title="class in org.apache.nutch.tools">FreeGenerator.FG</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i151" class="rowColor">
+<tr id="i152" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/FreeGenerator.FG.FGMapper.html" title="class in org.apache.nutch.tools">FreeGenerator.FG.FGMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i152" class="altColor">
+<tr id="i153" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/FreeGenerator.FG.FGReducer.html" title="class in org.apache.nutch.tools">FreeGenerator.FG.FGReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i153" class="rowColor">
+<tr id="i154" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/FSUtils.html" title="class in org.apache.nutch.util">FSUtils</a></td>
 <th class="colLast" scope="row">
 <div class="block">Utility methods for common filesystem operations.</div>
 </th>
 </tr>
-<tr id="i154" class="altColor">
+<tr id="i155" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/Ftp.html" title="class in org.apache.nutch.protocol.ftp">Ftp</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is a protocol plugin used for ftp: scheme.</div>
 </th>
 </tr>
-<tr id="i155" class="rowColor">
+<tr id="i156" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpError.html" title="class in org.apache.nutch.protocol.ftp">FtpError</a></td>
 <th class="colLast" scope="row">
 <div class="block">Thrown for Ftp error codes.</div>
 </th>
 </tr>
-<tr id="i156" class="altColor">
+<tr id="i157" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpException.html" title="class in org.apache.nutch.protocol.ftp">FtpException</a></td>
 <th class="colLast" scope="row">
 <div class="block">Superclass for important exceptions thrown during FTP talk, that must be
  handled with care.</div>
 </th>
 </tr>
-<tr id="i157" class="rowColor">
+<tr id="i158" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpExceptionBadSystResponse.html" title="class in org.apache.nutch.protocol.ftp">FtpExceptionBadSystResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">Exception indicating bad reply of SYST command.</div>
 </th>
 </tr>
-<tr id="i158" class="altColor">
+<tr id="i159" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpExceptionCanNotHaveDataConnection.html" title="class in org.apache.nutch.protocol.ftp">FtpExceptionCanNotHaveDataConnection</a></td>
 <th class="colLast" scope="row">
 <div class="block">Exception indicating failure of opening data connection.</div>
 </th>
 </tr>
-<tr id="i159" class="rowColor">
+<tr id="i160" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpExceptionControlClosedByForcedDataClose.html" title="class in org.apache.nutch.protocol.ftp">FtpExceptionControlClosedByForcedDataClose</a></td>
 <th class="colLast" scope="row">
 <div class="block">Exception indicating control channel is closed by server end, due to forced
  closure of data channel at client (our) end.</div>
 </th>
 </tr>
-<tr id="i160" class="altColor">
+<tr id="i161" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpExceptionUnknownForcedDataClose.html" title="class in org.apache.nutch.protocol.ftp">FtpExceptionUnknownForcedDataClose</a></td>
 <th class="colLast" scope="row">
 <div class="block">Exception indicating unrecognizable reply from server after forced closure of
  data channel by client (our) side.</div>
 </th>
 </tr>
-<tr id="i161" class="rowColor">
+<tr id="i162" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpResponse.html" title="class in org.apache.nutch.protocol.ftp">FtpResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">FtpResponse.java mimics ftp replies as http response.</div>
 </th>
 </tr>
-<tr id="i162" class="altColor">
+<tr id="i163" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/FtpRobotRulesParser.html" title="class in org.apache.nutch.protocol.ftp">FtpRobotRulesParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is used for parsing robots for urls belonging to FTP protocol.</div>
 </th>
 </tr>
-<tr id="i163" class="rowColor">
+<tr id="i164" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></td>
 <th class="colLast" scope="row">
 <div class="block">Generates a subset of a CrawlDb to fetch.</div>
 </th>
 </tr>
-<tr id="i164" class="altColor">
+<tr id="i165" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.CrawlDbUpdater.html" title="class in org.apache.nutch.crawl">Generator.CrawlDbUpdater</a></td>
 <th class="colLast" scope="row">
 <div class="block">Update the CrawlDB so that the next generate won't include the same URLs.</div>
 </th>
 </tr>
-<tr id="i165" class="rowColor">
+<tr id="i166" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.CrawlDbUpdater.CrawlDbUpdateMapper.html" title="class in org.apache.nutch.crawl">Generator.CrawlDbUpdater.CrawlDbUpdateMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i166" class="altColor">
+<tr id="i167" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.CrawlDbUpdater.CrawlDbUpdateReducer.html" title="class in org.apache.nutch.crawl">Generator.CrawlDbUpdater.CrawlDbUpdateReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i167" class="rowColor">
+<tr id="i168" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.DecreasingFloatComparator.html" title="class in org.apache.nutch.crawl">Generator.DecreasingFloatComparator</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i168" class="altColor">
+<tr id="i169" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.HashComparator.html" title="class in org.apache.nutch.crawl">Generator.HashComparator</a></td>
 <th class="colLast" scope="row">
 <div class="block">Sort fetch lists by hash of URL.</div>
 </th>
 </tr>
-<tr id="i169" class="rowColor">
+<tr id="i170" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.PartitionReducer.html" title="class in org.apache.nutch.crawl">Generator.PartitionReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i170" class="altColor">
+<tr id="i171" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.Selector.html" title="class in org.apache.nutch.crawl">Generator.Selector</a></td>
 <th class="colLast" scope="row">
 <div class="block">Selects entries due for fetch.</div>
 </th>
 </tr>
-<tr id="i171" class="rowColor">
+<tr id="i172" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.SelectorEntry.html" title="class in org.apache.nutch.crawl">Generator.SelectorEntry</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i172" class="altColor">
+<tr id="i173" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.SelectorInverseMapper.html" title="class in org.apache.nutch.crawl">Generator.SelectorInverseMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i173" class="rowColor">
+<tr id="i174" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.SelectorMapper.html" title="class in org.apache.nutch.crawl">Generator.SelectorMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Select and invert subset due for fetch.</div>
 </th>
 </tr>
-<tr id="i174" class="altColor">
+<tr id="i175" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Generator.SelectorReducer.html" title="class in org.apache.nutch.crawl">Generator.SelectorReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Collect until limit is reached.</div>
 </th>
 </tr>
-<tr id="i175" class="rowColor">
+<tr id="i176" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/GenericWritableConfigurable.html" title="class in org.apache.nutch.util">GenericWritableConfigurable</a></td>
 <th class="colLast" scope="row">
 <div class="block">A generic Writable wrapper that can inject Configuration to
- <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configurable</code></a>s</div>
+ <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configurable</code></a>s</div>
 </th>
 </tr>
-<tr id="i176" class="altColor">
+<tr id="i177" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/geoip/GeoIPDocumentCreator.html" title="class in org.apache.nutch.indexer.geoip">GeoIPDocumentCreator</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -1081,94 +1089,94 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/indexer/geoip/GeoIPIndexingFilter.html" title="class in org.apache.nutch.indexer.geoip"><code>GeoIPIndexingFilter</code></a>, where configuration is also read.</div>
 </th>
 </tr>
-<tr id="i177" class="rowColor">
+<tr id="i178" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/geoip/GeoIPIndexingFilter.html" title="class in org.apache.nutch.indexer.geoip">GeoIPIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This plugin implements an indexing filter which takes advantage of the <a href="https://github.com/maxmind/GeoIP2-java">GeoIP2-java API</a>.</div>
 </th>
 </tr>
-<tr id="i178" class="altColor">
+<tr id="i179" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/GZIPUtils.html" title="class in org.apache.nutch.util">GZIPUtils</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of utility methods for working on GZIPed data.</div>
 </th>
 </tr>
-<tr id="i179" class="rowColor">
+<tr id="i180" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/HadoopFSUtil.html" title="class in org.apache.nutch.util">HadoopFSUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i180" class="altColor">
+<tr id="i181" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/headings/HeadingsParseFilter.html" title="class in org.apache.nutch.parse.headings">HeadingsParseFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">HtmlParseFilter to retrieve h1 and h2 values from the DOM.</div>
 </th>
 </tr>
-<tr id="i181" class="rowColor">
+<tr id="i182" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/HostDatum.html" title="class in org.apache.nutch.hostdb">HostDatum</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i182" class="altColor">
+<tr id="i183" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/host/HostURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.host">HostURLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">URL normalizer for mapping hosts to their desired form.</div>
 </th>
 </tr>
-<tr id="i183" class="rowColor">
+<tr id="i184" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/analysis/lang/HTMLLanguageParser.html" title="class in org.apache.nutch.analysis.lang">HTMLLanguageParser</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i184" class="altColor">
+<tr id="i185" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/HTMLMetaProcessor.html" title="class in org.apache.nutch.parse.html">HTMLMetaProcessor</a></td>
 <th class="colLast" scope="row">
 <div class="block">Class for parsing META Directives from DOM trees.</div>
 </th>
 </tr>
-<tr id="i185" class="rowColor">
+<tr id="i186" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/tika/HTMLMetaProcessor.html" title="class in org.apache.nutch.parse.tika">HTMLMetaProcessor</a></td>
 <th class="colLast" scope="row">
 <div class="block">Class for parsing META Directives from DOM trees.</div>
 </th>
 </tr>
-<tr id="i186" class="altColor">
+<tr id="i187" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/HTMLMetaTags.html" title="class in org.apache.nutch.parse">HTMLMetaTags</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class holds the information about HTML "meta" tags extracted from a
  page.</div>
 </th>
 </tr>
-<tr id="i187" class="rowColor">
+<tr id="i188" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/HtmlParseFilter.html" title="interface in org.apache.nutch.parse">HtmlParseFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Extension point for DOM-based HTML parsers.</div>
 </th>
 </tr>
-<tr id="i188" class="altColor">
+<tr id="i189" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/HtmlParseFilters.html" title="class in org.apache.nutch.parse">HtmlParseFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/parse/HtmlParseFilter.html" title="interface in org.apache.nutch.parse"><code>HtmlParseFilter</code></a> implementing plugins.</div>
 </th>
 </tr>
-<tr id="i189" class="rowColor">
+<tr id="i190" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/HtmlParser.html" title="class in org.apache.nutch.parse.html">HtmlParser</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i190" class="altColor">
+<tr id="i191" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/HtmlUnitWebDriver.html" title="class in org.apache.nutch.protocol.htmlunit">HtmlUnitWebDriver</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i191" class="rowColor">
+<tr id="i192" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/HtmlUnitWebWindowListener.html" title="class in org.apache.nutch.protocol.htmlunit">HtmlUnitWebWindowListener</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i192" class="altColor">
+<tr id="i193" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/Http.html" title="class in org.apache.nutch.protocol.htmlunit">Http</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i193" class="rowColor">
+<tr id="i194" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/Http.html" title="class in org.apache.nutch.protocol.http">Http</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i194" class="altColor">
+<tr id="i195" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/Http.html" title="class in org.apache.nutch.protocol.httpclient">Http</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -1177,121 +1185,121 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  server.</div>
 </th>
 </tr>
-<tr id="i195" class="rowColor">
+<tr id="i196" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/interactiveselenium/Http.html" title="class in org.apache.nutch.protocol.interactiveselenium">Http</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i196" class="altColor">
+<tr id="i197" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/selenium/Http.html" title="class in org.apache.nutch.protocol.selenium">Http</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i197" class="rowColor">
+<tr id="i198" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpAuthentication.html" title="interface in org.apache.nutch.protocol.httpclient">HttpAuthentication</a></td>
 <th class="colLast" scope="row">
 <div class="block">The base level of services required for Http Authentication</div>
 </th>
 </tr>
-<tr id="i198" class="altColor">
+<tr id="i199" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpAuthenticationException.html" title="class in org.apache.nutch.protocol.httpclient">HttpAuthenticationException</a></td>
 <th class="colLast" scope="row">
 <div class="block">Can be used to identify problems during creation of Authentication objects.</div>
 </th>
 </tr>
-<tr id="i199" class="rowColor">
+<tr id="i200" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpAuthenticationFactory.html" title="class in org.apache.nutch.protocol.httpclient">HttpAuthenticationFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">Provides the Http protocol implementation with the ability to authenticate
  when prompted.</div>
 </th>
 </tr>
-<tr id="i200" class="altColor">
+<tr id="i201" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i201" class="rowColor">
+<tr id="i202" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpBasicAuthentication.html" title="class in org.apache.nutch.protocol.httpclient">HttpBasicAuthentication</a></td>
 <th class="colLast" scope="row">
 <div class="block">Implementation of RFC 2617 Basic Authentication.</div>
 </th>
 </tr>
-<tr id="i202" class="altColor">
+<tr id="i203" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/protocols/HttpDateFormat.html" title="class in org.apache.nutch.net.protocols">HttpDateFormat</a></td>
 <th class="colLast" scope="row">
 <div class="block">Parse and format HTTP dates in HTTP headers, e.g., used to fill the
  &quot;If-Modified-Since&quot; request header field.</div>
 </th>
 </tr>
-<tr id="i203" class="rowColor">
+<tr id="i204" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/api/HttpException.html" title="class in org.apache.nutch.protocol.http.api">HttpException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i204" class="altColor">
+<tr id="i205" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpFormAuthConfigurer.html" title="class in org.apache.nutch.protocol.httpclient">HttpFormAuthConfigurer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i205" class="rowColor">
+<tr id="i206" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpFormAuthentication.html" title="class in org.apache.nutch.protocol.httpclient">HttpFormAuthentication</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i206" class="altColor">
+<tr id="i207" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/HttpHeaders.html" title="interface in org.apache.nutch.metadata">HttpHeaders</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of HTTP header names.</div>
 </th>
 </tr>
-<tr id="i207" class="rowColor">
+<tr id="i208" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/HttpResponse.html" title="class in org.apache.nutch.protocol.htmlunit">HttpResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">An HTTP response.</div>
 </th>
 </tr>
-<tr id="i208" class="altColor">
+<tr id="i209" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/HttpResponse.html" title="class in org.apache.nutch.protocol.http">HttpResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">An HTTP response.</div>
 </th>
 </tr>
-<tr id="i209" class="rowColor">
+<tr id="i210" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/httpclient/HttpResponse.html" title="class in org.apache.nutch.protocol.httpclient">HttpResponse</a></td>
 <th class="colLast" scope="row">
 <div class="block">An HTTP response.</div>
 </th>
 </tr>
-<tr id="i210" class="altColor">
+<tr id="i211" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/interactiveselenium/HttpResponse.html" title="class in org.apache.nutch.protocol.interactiveselenium">HttpResponse</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i211" class="rowColor">
+<tr id="i212" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/selenium/HttpResponse.html" title="class in org.apache.nutch.protocol.selenium">HttpResponse</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i212" class="altColor">
+<tr id="i213" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/htmlunit/HttpResponse.Scheme.html" title="enum in org.apache.nutch.protocol.htmlunit">HttpResponse.Scheme</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i213" class="rowColor">
+<tr id="i214" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/HttpResponse.Scheme.html" title="enum in org.apache.nutch.protocol.http">HttpResponse.Scheme</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i214" class="altColor">
+<tr id="i215" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/interactiveselenium/HttpResponse.Scheme.html" title="enum in org.apache.nutch.protocol.interactiveselenium">HttpResponse.Scheme</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i215" class="rowColor">
+<tr id="i216" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/selenium/HttpResponse.Scheme.html" title="enum in org.apache.nutch.protocol.selenium">HttpResponse.Scheme</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i216" class="altColor">
+<tr id="i217" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/http/api/HttpRobotRulesParser.html" title="class in org.apache.nutch.protocol.http.api">HttpRobotRulesParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is used for parsing robots for urls belonging to HTTP protocol.</div>
 </th>
 </tr>
-<tr id="i217" class="rowColor">
+<tr id="i218" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/selenium/HttpWebClient.html" title="class in org.apache.nutch.protocol.selenium">HttpWebClient</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i218" class="altColor">
+<tr id="i219" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer">IndexerMapReduce</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -1300,72 +1308,72 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  functionality required when undertaking indexing.</div>
 </th>
 </tr>
-<tr id="i219" class="rowColor">
+<tr id="i220" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerMapper.html" title="class in org.apache.nutch.indexer">IndexerMapReduce.IndexerMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i220" class="altColor">
+<tr id="i221" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerReducer.html" title="class in org.apache.nutch.indexer">IndexerMapReduce.IndexerReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i221" class="rowColor">
+<tr id="i222" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexerOutputFormat.html" title="class in org.apache.nutch.indexer">IndexerOutputFormat</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i222" class="altColor">
+<tr id="i223" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexingException.html" title="class in org.apache.nutch.indexer">IndexingException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i223" class="rowColor">
+<tr id="i224" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer">IndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Extension point for indexing.</div>
 </th>
 </tr>
-<tr id="i224" class="altColor">
+<tr id="i225" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexingFilters.html" title="class in org.apache.nutch.indexer">IndexingFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> implementing plugins.</div>
 </th>
 </tr>
-<tr id="i225" class="rowColor">
+<tr id="i226" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexingFiltersChecker.html" title="class in org.apache.nutch.indexer">IndexingFiltersChecker</a></td>
 <th class="colLast" scope="row">
 <div class="block">Reads and parses a URL and run the indexers on it.</div>
 </th>
 </tr>
-<tr id="i226" class="altColor">
+<tr id="i227" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexingJob.html" title="class in org.apache.nutch.indexer">IndexingJob</a></td>
 <th class="colLast" scope="row">
 <div class="block">Generic indexer which relies on the plugins implementing IndexWriter</div>
 </th>
 </tr>
-<tr id="i227" class="rowColor">
+<tr id="i228" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexWriter.html" title="interface in org.apache.nutch.indexer">IndexWriter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i228" class="altColor">
+<tr id="i229" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexWriterConfig.html" title="class in org.apache.nutch.indexer">IndexWriterConfig</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i229" class="rowColor">
+<tr id="i230" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexWriterParams.html" title="class in org.apache.nutch.indexer">IndexWriterParams</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i230" class="altColor">
+<tr id="i231" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/IndexWriters.html" title="class in org.apache.nutch.indexer">IndexWriters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/indexer/IndexWriter.html" title="interface in org.apache.nutch.indexer"><code>IndexWriter</code></a> implementing plugins.</div>
 </th>
 </tr>
-<tr id="i231" class="rowColor">
+<tr id="i232" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Injector.html" title="class in org.apache.nutch.crawl">Injector</a></td>
 <th class="colLast" scope="row">
 <div class="block">Injector takes a flat text file of URLs (or a folder containing text files)
  and merges ("injects") these URLs into the CrawlDb.</div>
 </th>
 </tr>
-<tr id="i232" class="altColor">
+<tr id="i233" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Injector.InjectMapper.html" title="class in org.apache.nutch.crawl">Injector.InjectMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">InjectMapper reads
@@ -1375,29 +1383,29 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  metadata.</div>
 </th>
 </tr>
-<tr id="i233" class="rowColor">
+<tr id="i234" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Injector.InjectReducer.html" title="class in org.apache.nutch.crawl">Injector.InjectReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Combine multiple new entries for a url.</div>
 </th>
 </tr>
-<tr id="i234" class="altColor">
+<tr id="i235" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Inlink.html" title="class in org.apache.nutch.crawl">Inlink</a></td>
 <th class="colLast" scope="row">
 <div class="block">An incoming link to a page.</div>
 </th>
 </tr>
-<tr id="i235" class="rowColor">
+<tr id="i236" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Inlinks.html" title="class in org.apache.nutch.crawl">Inlinks</a></td>
 <th class="colLast" scope="row">
 <div class="block">A list of <a href="org/apache/nutch/crawl/Inlink.html" title="class in org.apache.nutch.crawl"><code>Inlink</code></a>s.</div>
 </th>
 </tr>
-<tr id="i236" class="altColor">
+<tr id="i237" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/interactiveselenium/handlers/InteractiveSeleniumHandler.html" title="interface in org.apache.nutch.protocol.interactiveselenium.handlers">InteractiveSeleniumHandler</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i237" class="rowColor">
+<tr id="i238" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/okhttp/IPFilterRules.html" title="class in org.apache.nutch.protocol.okhttp">IPFilterRules</a></td>
 <th class="colLast" scope="row">
 <div class="block">Optionally limit or block connections to IP address ranges
@@ -1405,247 +1413,254 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  notation, or single IP addresses).</div>
 </th>
 </tr>
-<tr id="i238" class="altColor">
+<tr id="i239" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/exchange/jexl/JexlExchange.html" title="class in org.apache.nutch.exchange.jexl">JexlExchange</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i239" class="rowColor">
+<tr id="i240" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/jexl/JexlIndexingFilter.html" title="class in org.apache.nutch.indexer.jexl">JexlIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> that allows filtering of
  documents based on a JEXL expression.</div>
 </th>
 </tr>
-<tr id="i240" class="altColor">
+<tr id="i241" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/JexlUtil.html" title="class in org.apache.nutch.util">JexlUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">Utility methods for handling JEXL expressions</div>
 </th>
 </tr>
-<tr id="i241" class="rowColor">
+<tr id="i242" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/JobConfig.html" title="class in org.apache.nutch.service.model.request">JobConfig</a></td>
 <th class="colLast" scope="row">
 <div class="block">Job-specific configuration.</div>
 </th>
 </tr>
-<tr id="i242" class="altColor">
+<tr id="i243" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/JobFactory.html" title="class in org.apache.nutch.service.impl">JobFactory</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i243" class="rowColor">
+<tr id="i244" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/response/JobInfo.html" title="class in org.apache.nutch.service.model.response">JobInfo</a></td>
 <th class="colLast" scope="row">
 <div class="block">This is the response object containing Job information</div>
 </th>
 </tr>
-<tr id="i244" class="altColor">
+<tr id="i245" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/response/JobInfo.State.html" title="enum in org.apache.nutch.service.model.response">JobInfo.State</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i245" class="rowColor">
+<tr id="i246" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/JobManager.html" title="interface in org.apache.nutch.service">JobManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i246" class="altColor">
+<tr id="i247" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/JobManager.JobType.html" title="enum in org.apache.nutch.service">JobManager.JobType</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i247" class="rowColor">
+<tr id="i248" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/JobManagerImpl.html" title="class in org.apache.nutch.service.impl">JobManagerImpl</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i248" class="altColor">
+<tr id="i249" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/resources/JobResource.html" title="class in org.apache.nutch.service.resources">JobResource</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i249" class="rowColor">
+<tr id="i250" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/JobWorker.html" title="class in org.apache.nutch.service.impl">JobWorker</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i250" class="altColor">
+<tr id="i251" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/js/JSParseFilter.html" title="class in org.apache.nutch.parse.js">JSParseFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class is a heuristic link extractor for JavaScript files and code
  snippets.</div>
 </th>
 </tr>
-<tr id="i251" class="rowColor">
+<tr id="i252" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/kafka/KafkaConstants.html" title="interface in org.apache.nutch.indexwriter.kafka">KafkaConstants</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i252" class="altColor">
+<tr id="i253" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/kafka/KafkaIndexWriter.html" title="class in org.apache.nutch.indexwriter.kafka">KafkaIndexWriter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Sends Nutch documents to a configured Kafka Cluster</div>
 </th>
 </tr>
-<tr id="i253" class="rowColor">
+<tr id="i254" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/analysis/lang/LanguageIndexingFilter.html" title="class in org.apache.nutch.analysis.lang">LanguageIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> that add a
  <code>lang</code> (language) field to the document.</div>
 </th>
 </tr>
-<tr id="i254" class="altColor">
+<tr id="i255" class="rowColor">
+<td class="colFirst"><a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></td>
+<th class="colLast" scope="row">
+<div class="block">A utility class for tracking latency metrics using TDigest for percentile
+ calculation.</div>
+</th>
+</tr>
+<tr id="i256" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/link/LinkAnalysisScoringFilter.html" title="class in org.apache.nutch.scoring.link">LinkAnalysisScoringFilter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i255" class="rowColor">
+<tr id="i257" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDatum.html" title="class in org.apache.nutch.scoring.webgraph">LinkDatum</a></td>
 <th class="colLast" scope="row">
 <div class="block">A class for holding link information including the url, anchor text, a score,
  the timestamp of the link and a link type.</div>
 </th>
 </tr>
-<tr id="i256" class="altColor">
+<tr id="i258" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDb.html" title="class in org.apache.nutch.crawl">LinkDb</a></td>
 <th class="colLast" scope="row">
 <div class="block">Maintains an inverted link map, listing incoming links for each url.</div>
 </th>
 </tr>
-<tr id="i257" class="rowColor">
+<tr id="i259" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDb.LinkDbMapper.html" title="class in org.apache.nutch.crawl">LinkDb.LinkDbMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i258" class="altColor">
+<tr id="i260" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDbFilter.html" title="class in org.apache.nutch.crawl">LinkDbFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class provides a way to separate the URL normalization and filtering
  steps from the rest of LinkDb manipulation code.</div>
 </th>
 </tr>
-<tr id="i259" class="rowColor">
+<tr id="i261" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDbMerger.html" title="class in org.apache.nutch.crawl">LinkDbMerger</a></td>
 <th class="colLast" scope="row">
 <div class="block">This tool merges several LinkDb-s into one, optionally filtering URLs through
  the current URLFilters, to skip prohibited URLs and links.</div>
 </th>
 </tr>
-<tr id="i260" class="altColor">
+<tr id="i262" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDbMerger.LinkDbMergeReducer.html" title="class in org.apache.nutch.crawl">LinkDbMerger.LinkDbMergeReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i261" class="rowColor">
+<tr id="i263" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDbReader.html" title="class in org.apache.nutch.crawl">LinkDbReader</a></td>
 <th class="colLast" scope="row">
 <div class="block">Read utility for the LinkDb.</div>
 </th>
 </tr>
-<tr id="i262" class="altColor">
+<tr id="i264" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/LinkDbReader.LinkDBDumpMapper.html" title="class in org.apache.nutch.crawl">LinkDbReader.LinkDBDumpMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i263" class="rowColor">
+<tr id="i265" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper</a></td>
 <th class="colLast" scope="row">
 <div class="block">The LinkDumper tool creates a database of node to inlink information that can
  be read using the nested Reader class.</div>
 </th>
 </tr>
-<tr id="i264" class="altColor">
+<tr id="i266" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.Inverter.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.Inverter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Inverts outlinks from the WebGraph to inlinks and attaches node
  information.</div>
 </th>
 </tr>
-<tr id="i265" class="rowColor">
+<tr id="i267" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.Inverter.InvertMapper.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.Inverter.InvertMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Wraps all values in ObjectWritables.</div>
 </th>
 </tr>
-<tr id="i266" class="altColor">
+<tr id="i268" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.Inverter.InvertReducer.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.Inverter.InvertReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Inverts outlinks to inlinks while attaching node information to the
  outlink.</div>
 </th>
 </tr>
-<tr id="i267" class="rowColor">
+<tr id="i269" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.LinkNode.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.LinkNode</a></td>
 <th class="colLast" scope="row">
 <div class="block">Bean class which holds url to node information.</div>
 </th>
 </tr>
-<tr id="i268" class="altColor">
+<tr id="i270" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.LinkNodes.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.LinkNodes</a></td>
 <th class="colLast" scope="row">
 <div class="block">Writable class which holds an array of LinkNode objects.</div>
 </th>
 </tr>
-<tr id="i269" class="rowColor">
+<tr id="i271" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.Merger.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.Merger</a></td>
 <th class="colLast" scope="row">
 <div class="block">Merges LinkNode objects into a single array value per url.</div>
 </th>
 </tr>
-<tr id="i270" class="altColor">
+<tr id="i272" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkDumper.Reader.html" title="class in org.apache.nutch.scoring.webgraph">LinkDumper.Reader</a></td>
 <th class="colLast" scope="row">
 <div class="block">Reader class which will print out the url and all of its inlinks to system
  out.</div>
 </th>
 </tr>
-<tr id="i271" class="rowColor">
+<tr id="i273" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/LinkRank.html" title="class in org.apache.nutch.scoring.webgraph">LinkRank</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i272" class="altColor">
+<tr id="i274" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/LinkReader.html" title="class in org.apache.nutch.service.impl">LinkReader</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i273" class="rowColor">
+<tr id="i275" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/links/LinksIndexingFilter.html" title="class in org.apache.nutch.indexer.links">LinksIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> that adds
  <code>outlinks</code> and <code>inlinks</code> field(s) to the document.</div>
 </th>
 </tr>
-<tr id="i274" class="altColor">
+<tr id="i276" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/LockUtil.html" title="class in org.apache.nutch.util">LockUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">Utility methods for handling application-level locking.</div>
 </th>
 </tr>
-<tr id="i275" class="rowColor">
+<tr id="i277" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/util/LuceneAnalyzerUtil.html" title="class in org.apache.nutch.scoring.similarity.util">LuceneAnalyzerUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates a custom analyzer based on user provided inputs</div>
 </th>
 </tr>
-<tr id="i276" class="altColor">
+<tr id="i278" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/util/LuceneAnalyzerUtil.StemFilterType.html" title="enum in org.apache.nutch.scoring.similarity.util">LuceneAnalyzerUtil.StemFilterType</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i277" class="rowColor">
+<tr id="i279" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/util/LuceneTokenizer.html" title="class in org.apache.nutch.scoring.similarity.util">LuceneTokenizer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i278" class="altColor">
+<tr id="i280" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/util/LuceneTokenizer.TokenizerType.html" title="enum in org.apache.nutch.scoring.similarity.util">LuceneTokenizer.TokenizerType</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i279" class="rowColor">
+<tr id="i281" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/MD5Signature.html" title="class in org.apache.nutch.crawl">MD5Signature</a></td>
 <th class="colLast" scope="row">
 <div class="block">Default implementation of a page signature.</div>
 </th>
 </tr>
-<tr id="i280" class="altColor">
+<tr id="i282" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/Metadata.html" title="class in org.apache.nutch.metadata">Metadata</a></td>
 <th class="colLast" scope="row">
 <div class="block">A multi-valued metadata container.</div>
 </th>
 </tr>
-<tr id="i281" class="rowColor">
+<tr id="i283" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/metadata/MetadataIndexer.html" title="class in org.apache.nutch.indexer.metadata">MetadataIndexer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Indexer which can be configured to extract metadata from the crawldb, parse
  metadata or content metadata.</div>
 </th>
 </tr>
-<tr id="i282" class="altColor">
+<tr id="i284" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/metadata/MetadataScoringFilter.html" title="class in org.apache.nutch.scoring.metadata">MetadataScoringFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">For documentation:
@@ -1653,7 +1668,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/scoring/metadata/package-summary.html"><code>org.apache.nutch.scoring.metadata</code></a></div>
 </th>
 </tr>
-<tr id="i283" class="rowColor">
+<tr id="i285" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/metatags/MetaTagsParser.html" title="class in org.apache.nutch.parse.metatags">MetaTagsParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">Parse HTML meta tags (keywords, description) and store them in the parse
@@ -1661,55 +1676,55 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  prefix 'metatag.'.</div>
 </th>
 </tr>
-<tr id="i284" class="altColor">
+<tr id="i286" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/MetaWrapper.html" title="class in org.apache.nutch.metadata">MetaWrapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">This is a simple decorator that adds metadata to any Writable-s that can be
  serialized by <a href="org/apache/nutch/crawl/NutchWritable.html" title="class in org.apache.nutch.crawl"><code>NutchWritable</code></a>.</div>
 </th>
 </tr>
-<tr id="i285" class="rowColor">
+<tr id="i287" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/MimeAdaptiveFetchSchedule.html" title="class in org.apache.nutch.crawl">MimeAdaptiveFetchSchedule</a></td>
 <th class="colLast" scope="row">
 <div class="block">Extension of @see AdaptiveFetchSchedule that allows for more flexible
  configuration of DEC and INC factors for various MIME-types.</div>
 </th>
 </tr>
-<tr id="i286" class="altColor">
+<tr id="i288" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/filter/MimeTypeIndexingFilter.html" title="class in org.apache.nutch.indexer.filter">MimeTypeIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> that allows filtering
  of documents based on the MIME Type detected by Tika</div>
 </th>
 </tr>
-<tr id="i287" class="rowColor">
+<tr id="i289" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/MimeUtil.html" title="class in org.apache.nutch.util">MimeUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">This is a facade class to insulate Nutch from its underlying Mime Type
  substrate library, <a href="https://tika.apache.org/">Apache Tika</a>.</div>
 </th>
 </tr>
-<tr id="i288" class="altColor">
+<tr id="i290" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/MissingDependencyException.html" title="class in org.apache.nutch.plugin">MissingDependencyException</a></td>
 <th class="colLast" scope="row">
 <div class="block"><code>MissingDependencyException</code> will be thrown if a plugin dependency
  cannot be found.</div>
 </th>
 </tr>
-<tr id="i289" class="rowColor">
+<tr id="i291" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/cosine/Model.html" title="class in org.apache.nutch.scoring.similarity.cosine">Model</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class creates a model used to store Document vector representation of the corpus.</div>
 </th>
 </tr>
-<tr id="i290" class="altColor">
+<tr id="i292" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/more/MoreIndexingFilter.html" title="class in org.apache.nutch.indexer.more">MoreIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Add (or reset) a few metaData properties as respective fields (if they are
  available), so that they can be accurately used within the search index.</div>
 </th>
 </tr>
-<tr id="i291" class="rowColor">
+<tr id="i293" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parsefilter/naivebayes/NaiveBayesParseFilter.html" title="class in org.apache.nutch.parsefilter.naivebayes">NaiveBayesParseFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Html Parse filter that classifies the outlinks from the parseresult as
@@ -1720,70 +1735,70 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  given in parsefilter.naivebayes.wordlist.</div>
 </th>
 </tr>
-<tr id="i292" class="altColor">
+<tr id="i294" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/Node.html" title="class in org.apache.nutch.scoring.webgraph">Node</a></td>
 <th class="colLast" scope="row">
 <div class="block">A class which holds the number of inlinks and outlinks for a given url along
  with an inlink score from a link analysis program and any metadata.</div>
 </th>
 </tr>
-<tr id="i293" class="rowColor">
+<tr id="i295" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper</a></td>
 <th class="colLast" scope="row">
 <div class="block">A tools that dumps out the top urls by number of inlinks, number of outlinks,
  or by score, to a text file.</div>
 </th>
 </tr>
-<tr id="i294" class="altColor">
+<tr id="i296" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Dumper.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Dumper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Outputs the hosts or domains with an associated value.</div>
 </th>
 </tr>
-<tr id="i295" class="rowColor">
+<tr id="i297" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Dumper.DumperMapper.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Dumper.DumperMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Outputs the host or domain as key for this record and numInlinks,
  numOutlinks or score as the value.</div>
 </th>
 </tr>
-<tr id="i296" class="altColor">
+<tr id="i298" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Dumper.DumperReducer.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Dumper.DumperReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Outputs either the sum or the top value for this record.</div>
 </th>
 </tr>
-<tr id="i297" class="rowColor">
+<tr id="i299" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Sorter.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Sorter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Outputs the top urls sorted in descending order.</div>
 </th>
 </tr>
-<tr id="i298" class="altColor">
+<tr id="i300" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Sorter.SorterMapper.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Sorter.SorterMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Outputs the url with the appropriate number of inlinks, outlinks, or for
  score.</div>
 </th>
 </tr>
-<tr id="i299" class="rowColor">
+<tr id="i301" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeDumper.Sorter.SorterReducer.html" title="class in org.apache.nutch.scoring.webgraph">NodeDumper.Sorter.SorterReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Flips and collects the url and numeric sort value.</div>
 </th>
 </tr>
-<tr id="i300" class="altColor">
+<tr id="i302" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/NodeReader.html" title="class in org.apache.nutch.scoring.webgraph">NodeReader</a></td>
 <th class="colLast" scope="row">
 <div class="block">Reads and prints to system out information for a single node from the NodeDb
  in the WebGraph.</div>
 </th>
 </tr>
-<tr id="i301" class="rowColor">
+<tr id="i303" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/NodeReader.html" title="class in org.apache.nutch.service.impl">NodeReader</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i302" class="altColor">
+<tr id="i304" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/NodeWalker.html" title="class in org.apache.nutch.util">NodeWalker</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -1791,111 +1806,117 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  of recursion.</div>
 </th>
 </tr>
-<tr id="i303" class="rowColor">
+<tr id="i305" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/Nutch.html" title="interface in org.apache.nutch.metadata">Nutch</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of Nutch internal metadata constants.</div>
 </th>
 </tr>
-<tr id="i304" class="altColor">
+<tr id="i306" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/NutchConfig.html" title="class in org.apache.nutch.service.model.request">NutchConfig</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i305" class="rowColor">
+<tr id="i307" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/NutchConfiguration.html" title="class in org.apache.nutch.util">NutchConfiguration</a></td>
 <th class="colLast" scope="row">
-<div class="block">Utility to create Hadoop <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>s that include Nutch-specific
+<div class="block">Utility to create Hadoop <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>s that include Nutch-specific
  resources.</div>
 </th>
 </tr>
-<tr id="i306" class="altColor">
+<tr id="i308" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/NutchDocument.html" title="class in org.apache.nutch.indexer">NutchDocument</a></td>
 <th class="colLast" scope="row">
 <div class="block">A <a href="org/apache/nutch/indexer/NutchDocument.html" title="class in org.apache.nutch.indexer"><code>NutchDocument</code></a> is the unit of indexing.</div>
 </th>
 </tr>
-<tr id="i307" class="rowColor">
+<tr id="i309" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/NutchField.html" title="class in org.apache.nutch.indexer">NutchField</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class represents a multi-valued field with a weight.</div>
 </th>
 </tr>
-<tr id="i308" class="altColor">
+<tr id="i310" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/NutchIndexAction.html" title="class in org.apache.nutch.indexer">NutchIndexAction</a></td>
 <th class="colLast" scope="row">
 <div class="block">A <a href="org/apache/nutch/indexer/NutchIndexAction.html" title="class in org.apache.nutch.indexer"><code>NutchIndexAction</code></a> is the new unit of indexing holding the document
  and action information.</div>
 </th>
 </tr>
-<tr id="i309" class="rowColor">
+<tr id="i311" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/NutchJob.html" title="class in org.apache.nutch.util">NutchJob</a></td>
 <th class="colLast" scope="row">
-<div class="block">A <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job</code></a> for Nutch jobs.</div>
+<div class="block">A <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job</code></a> for Nutch jobs.</div>
 </th>
 </tr>
-<tr id="i310" class="altColor">
+<tr id="i312" class="altColor">
+<td class="colFirst"><a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></td>
+<th class="colLast" scope="row">
+<div class="block">Centralized constants for Hadoop metrics counter groups and names.</div>
+</th>
+</tr>
+<tr id="i313" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/publisher/NutchPublisher.html" title="interface in org.apache.nutch.publisher">NutchPublisher</a></td>
 <th class="colLast" scope="row">
 <div class="block">All publisher subscriber model implementations should implement this interface.</div>
 </th>
 </tr>
-<tr id="i311" class="rowColor">
+<tr id="i314" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/publisher/NutchPublishers.html" title="class in org.apache.nutch.publisher">NutchPublishers</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i312" class="altColor">
+<tr id="i315" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/NutchReader.html" title="interface in org.apache.nutch.service">NutchReader</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i313" class="rowColor">
+<tr id="i316" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/NutchServer.html" title="class in org.apache.nutch.service">NutchServer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i314" class="altColor">
+<tr id="i317" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/response/NutchServerInfo.html" title="class in org.apache.nutch.service.model.response">NutchServerInfo</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i315" class="rowColor">
+<tr id="i318" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/NutchServerPoolExecutor.html" title="class in org.apache.nutch.service.impl">NutchServerPoolExecutor</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i316" class="altColor">
+<tr id="i319" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/NutchTool.html" title="class in org.apache.nutch.util">NutchTool</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i317" class="rowColor">
+<tr id="i320" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/NutchWritable.html" title="class in org.apache.nutch.crawl">NutchWritable</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i318" class="altColor">
+<tr id="i321" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/ObjectCache.html" title="class in org.apache.nutch.util">ObjectCache</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i319" class="rowColor">
+<tr id="i322" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/okhttp/OkHttp.html" title="class in org.apache.nutch.protocol.okhttp">OkHttp</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i320" class="altColor">
+<tr id="i323" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/okhttp/OkHttpResponse.html" title="class in org.apache.nutch.protocol.okhttp">OkHttpResponse</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i321" class="rowColor">
+<tr id="i324" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/okhttp/OkHttpResponse.TruncatedContent.html" title="class in org.apache.nutch.protocol.okhttp">OkHttpResponse.TruncatedContent</a></td>
 <th class="colLast" scope="row">
 <div class="block">Container to store whether and why content has been truncated</div>
 </th>
 </tr>
-<tr id="i322" class="altColor">
+<tr id="i325" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/opensearch1x/OpenSearch1xConstants.html" title="interface in org.apache.nutch.indexwriter.opensearch1x">OpenSearch1xConstants</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i323" class="rowColor">
+<tr id="i326" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/opensearch1x/OpenSearch1xIndexWriter.html" title="class in org.apache.nutch.indexwriter.opensearch1x">OpenSearch1xIndexWriter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Sends NutchDocuments to a configured OpenSearch index.</div>
 </th>
 </tr>
-<tr id="i324" class="altColor">
+<tr id="i327" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/opic/OPICScoringFilter.html" title="class in org.apache.nutch.scoring.opic">OPICScoringFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This plugin implements a variant of an Online Page Importance Computation
@@ -1904,102 +1925,102 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  On-Line Page Importance Computation.</div>
 </th>
 </tr>
-<tr id="i325" class="rowColor">
+<tr id="i328" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/orphan/OrphanScoringFilter.html" title="class in org.apache.nutch.scoring.orphan">OrphanScoringFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Orphan scoring filter that determines whether a page has become orphaned,
  e.g.</div>
 </th>
 </tr>
-<tr id="i326" class="altColor">
+<tr id="i329" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/Outlink.html" title="class in org.apache.nutch.parse">Outlink</a></td>
 <th class="colLast" scope="row">
 <div class="block">An outgoing link from a page.</div>
 </th>
 </tr>
-<tr id="i327" class="rowColor">
+<tr id="i330" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/OutlinkExtractor.html" title="class in org.apache.nutch.parse">OutlinkExtractor</a></td>
 <th class="colLast" scope="row">
 <div class="block">Extractor to extract <a href="org/apache/nutch/parse/Outlink.html" title="class in org.apache.nutch.parse"><code>Outlink</code></a>s / URLs from
  plain text using Regular Expressions.</div>
 </th>
 </tr>
-<tr id="i328" class="altColor">
+<tr id="i331" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/Parse.html" title="interface in org.apache.nutch.parse">Parse</a></td>
 <th class="colLast" scope="row">
 <div class="block">The result of parsing a page's raw content.</div>
 </th>
 </tr>
-<tr id="i329" class="rowColor">
+<tr id="i332" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseData.html" title="class in org.apache.nutch.parse">ParseData</a></td>
 <th class="colLast" scope="row">
 <div class="block">Data extracted from a page's content.</div>
 </th>
 </tr>
-<tr id="i330" class="altColor">
+<tr id="i333" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseException.html" title="class in org.apache.nutch.parse">ParseException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i331" class="rowColor">
+<tr id="i334" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseImpl.html" title="class in org.apache.nutch.parse">ParseImpl</a></td>
 <th class="colLast" scope="row">
 <div class="block">The result of parsing a page's raw content.</div>
 </th>
 </tr>
-<tr id="i332" class="altColor">
+<tr id="i335" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseOutputFormat.html" title="class in org.apache.nutch.parse">ParseOutputFormat</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i333" class="rowColor">
+<tr id="i336" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/Parser.html" title="interface in org.apache.nutch.parse">Parser</a></td>
 <th class="colLast" scope="row">
 <div class="block">A parser for content generated by a
  <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a> implementation.</div>
 </th>
 </tr>
-<tr id="i334" class="altColor">
+<tr id="i337" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParserChecker.html" title="class in org.apache.nutch.parse">ParserChecker</a></td>
 <th class="colLast" scope="row">
 <div class="block">Parser checker, useful for testing parser.</div>
 </th>
 </tr>
-<tr id="i335" class="rowColor">
+<tr id="i338" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseResult.html" title="class in org.apache.nutch.parse">ParseResult</a></td>
 <th class="colLast" scope="row">
 <div class="block">A utility class that stores result of a parse.</div>
 </th>
 </tr>
-<tr id="i336" class="altColor">
+<tr id="i339" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParserFactory.html" title="class in org.apache.nutch.parse">ParserFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/parse/Parser.html" title="interface in org.apache.nutch.parse"><code>Parser</code></a> plugins.</div>
 </th>
 </tr>
-<tr id="i337" class="rowColor">
+<tr id="i340" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParserNotFound.html" title="class in org.apache.nutch.parse">ParserNotFound</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i338" class="altColor">
+<tr id="i341" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseSegment.html" title="class in org.apache.nutch.parse">ParseSegment</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i339" class="rowColor">
+<tr id="i342" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseSegment.ParseSegmentMapper.html" title="class in org.apache.nutch.parse">ParseSegment.ParseSegmentMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i340" class="altColor">
+<tr id="i343" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseSegment.ParseSegmentReducer.html" title="class in org.apache.nutch.parse">ParseSegment.ParseSegmentReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i341" class="rowColor">
+<tr id="i344" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseStatus.html" title="class in org.apache.nutch.parse">ParseStatus</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i342" class="altColor">
+<tr id="i345" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseText.html" title="class in org.apache.nutch.parse">ParseText</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i343" class="rowColor">
+<tr id="i346" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/ParseUtil.html" title="class in org.apache.nutch.parse">ParseUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">A Utility class containing methods to simply perform parsing utilities such
@@ -2007,19 +2028,19 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/parse/Parse.html" title="interface in org.apache.nutch.parse"><code>Parse</code></a> objects.</div>
 </th>
 </tr>
-<tr id="i344" class="altColor">
+<tr id="i347" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/pass/PassURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.pass">PassURLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">This URLNormalizer doesn't change urls.</div>
 </th>
 </tr>
-<tr id="i345" class="rowColor">
+<tr id="i348" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/Pluggable.html" title="interface in org.apache.nutch.plugin">Pluggable</a></td>
 <th class="colLast" scope="row">
 <div class="block">Defines the capability of a class to be plugged into Nutch.</div>
 </th>
 </tr>
-<tr id="i346" class="altColor">
+<tr id="i349" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/Plugin.html" title="class in org.apache.nutch.plugin">Plugin</a></td>
 <th class="colLast" scope="row">
 <div class="block">A nutch-plugin is an container for a set of custom logic that provide
@@ -2027,7 +2048,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  API for extending.</div>
 </th>
 </tr>
-<tr id="i347" class="rowColor">
+<tr id="i350" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/PluginClassLoader.html" title="class in org.apache.nutch.plugin">PluginClassLoader</a></td>
 <th class="colLast" scope="row">
 <div class="block">The <code>PluginClassLoader</code> is a child-first classloader that only
@@ -2035,7 +2056,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  and exported libraries of plugins that are required plugins.</div>
 </th>
 </tr>
-<tr id="i348" class="altColor">
+<tr id="i351" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/PluginDescriptor.html" title="class in org.apache.nutch.plugin">PluginDescriptor</a></td>
 <th class="colLast" scope="row">
 <div class="block">The <code>PluginDescriptor</code> provide access to all meta information of a
@@ -2043,7 +2064,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  classloader.</div>
 </th>
 </tr>
-<tr id="i349" class="rowColor">
+<tr id="i352" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/PluginManifestParser.html" title="class in org.apache.nutch.plugin">PluginManifestParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">The <code>PluginManifestParser</code> provides a mechanism for
@@ -2051,283 +2072,283 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  in a <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink"><code>String</code></a> of plugin directories.</div>
 </th>
 </tr>
-<tr id="i350" class="altColor">
+<tr id="i353" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/PluginRepository.html" title="class in org.apache.nutch.plugin">PluginRepository</a></td>
 <th class="colLast" scope="row">
 <div class="block">The plugin repository is a registry of all plugins.</div>
 </th>
 </tr>
-<tr id="i351" class="rowColor">
+<tr id="i354" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/PluginRuntimeException.html" title="class in org.apache.nutch.plugin">PluginRuntimeException</a></td>
 <th class="colLast" scope="row">
 <div class="block"><code>PluginRuntimeException</code> will be thrown until a exception in the
  plugin managemnt occurs.</div>
 </th>
 </tr>
-<tr id="i352" class="altColor">
+<tr id="i355" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/PrefixStringMatcher.html" title="class in org.apache.nutch.util">PrefixStringMatcher</a></td>
 <th class="colLast" scope="row">
 <div class="block">A class for efficiently matching <code>String</code>s against a set of
  prefixes.</div>
 </th>
 </tr>
-<tr id="i353" class="rowColor">
+<tr id="i356" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/prefix/PrefixURLFilter.html" title="class in org.apache.nutch.urlfilter.prefix">PrefixURLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Filters URLs based on a file of URL prefixes.</div>
 </th>
 </tr>
-<tr id="i354" class="altColor">
+<tr id="i357" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ftp/PrintCommandListener.html" title="class in org.apache.nutch.protocol.ftp">PrintCommandListener</a></td>
 <th class="colLast" scope="row">
 <div class="block">This is a support class for logging all ftp command/reply traffic.</div>
 </th>
 </tr>
-<tr id="i355" class="rowColor">
+<tr id="i358" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol">Protocol</a></td>
 <th class="colLast" scope="row">
 <div class="block">A retriever of url content.</div>
 </th>
 </tr>
-<tr id="i356" class="altColor">
+<tr id="i359" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/protocols/ProtocolException.html" title="class in org.apache.nutch.net.protocols">ProtocolException</a></td>
 <th class="colLast" scope="row">Deprecated.
 <div class="deprecationComment">Use <a href="org/apache/nutch/protocol/ProtocolException.html" title="class in org.apache.nutch.protocol"><code>ProtocolException</code></a> instead.</div>
 </th>
 </tr>
-<tr id="i357" class="rowColor">
+<tr id="i360" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ProtocolException.html" title="class in org.apache.nutch.protocol">ProtocolException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i358" class="altColor">
+<tr id="i361" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ProtocolFactory.html" title="class in org.apache.nutch.protocol">ProtocolFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a> plugins.</div>
 </th>
 </tr>
-<tr id="i359" class="rowColor">
+<tr id="i362" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/protocols/ProtocolLogUtil.html" title="class in org.apache.nutch.net.protocols">ProtocolLogUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i360" class="altColor">
+<tr id="i363" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ProtocolNotFound.html" title="class in org.apache.nutch.protocol">ProtocolNotFound</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i361" class="rowColor">
+<tr id="i364" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ProtocolOutput.html" title="class in org.apache.nutch.protocol">ProtocolOutput</a></td>
 <th class="colLast" scope="row">
 <div class="block">Simple aggregate to pass from protocol plugins both content and protocol
  status.</div>
 </th>
 </tr>
-<tr id="i362" class="altColor">
+<tr id="i365" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/ProtocolStatus.html" title="class in org.apache.nutch.protocol">ProtocolStatus</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i363" class="rowColor">
+<tr id="i366" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/ProtocolStatusStatistics.html" title="class in org.apache.nutch.util">ProtocolStatusStatistics</a></td>
 <th class="colLast" scope="row">
 <div class="block">Extracts protocol status code information from the crawl database.</div>
 </th>
 </tr>
-<tr id="i364" class="altColor">
+<tr id="i367" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/ProtocolStatusStatistics.ProtocolStatusStatisticsCombiner.html" title="class in org.apache.nutch.util">ProtocolStatusStatistics.ProtocolStatusStatisticsCombiner</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i365" class="rowColor">
+<tr id="i368" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/protocol/ProtocolURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.protocol">ProtocolURLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">URL normalizer to normalize the protocol for all URLs of a given host or
  domain, e.g.</div>
 </th>
 </tr>
-<tr id="i366" class="altColor">
+<tr id="i369" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/querystring/QuerystringURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.querystring">QuerystringURLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">URL normalizer plugin for normalizing query strings but sorting query string
  parameters.</div>
 </th>
 </tr>
-<tr id="i367" class="rowColor">
+<tr id="i370" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/fetcher/QueueFeeder.html" title="class in org.apache.nutch.fetcher">QueueFeeder</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class feeds the queues with input items, and re-fills them as items
  are consumed by FetcherThread-s.</div>
 </th>
 </tr>
-<tr id="i368" class="altColor">
+<tr id="i371" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/rabbit/RabbitIndexWriter.html" title="class in org.apache.nutch.indexwriter.rabbit">RabbitIndexWriter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i369" class="rowColor">
+<tr id="i372" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/rabbitmq/RabbitMQClient.html" title="class in org.apache.nutch.rabbitmq">RabbitMQClient</a></td>
 <th class="colLast" scope="row">
 <div class="block">Client for RabbitMQ</div>
 </th>
 </tr>
-<tr id="i370" class="altColor">
+<tr id="i373" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/rabbitmq/RabbitMQMessage.html" title="class in org.apache.nutch.rabbitmq">RabbitMQMessage</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i371" class="rowColor">
+<tr id="i374" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/publisher/rabbitmq/RabbitMQPublisherImpl.html" title="class in org.apache.nutch.publisher.rabbitmq">RabbitMQPublisherImpl</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i372" class="altColor">
+<tr id="i375" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/ReaderConfig.html" title="class in org.apache.nutch.service.model.request">ReaderConfig</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i373" class="rowColor">
+<tr id="i376" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/resources/ReaderResouce.html" title="class in org.apache.nutch.service.resources">ReaderResouce</a></td>
 <th class="colLast" scope="row">
 <div class="block">The Reader endpoint enables a user to read sequence files, 
  nodes and links from the Nutch webgraph.</div>
 </th>
 </tr>
-<tr id="i374" class="altColor">
+<tr id="i377" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/ReadHostDb.html" title="class in org.apache.nutch.hostdb">ReadHostDb</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i375" class="rowColor">
+<tr id="i378" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parsefilter/regex/RegexParseFilter.html" title="class in org.apache.nutch.parsefilter.regex">RegexParseFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">RegexParseFilter.</div>
 </th>
 </tr>
-<tr id="i376" class="altColor">
+<tr id="i379" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/api/RegexRule.html" title="class in org.apache.nutch.urlfilter.api">RegexRule</a></td>
 <th class="colLast" scope="row">
 <div class="block">A generic regular expression rule.</div>
 </th>
 </tr>
-<tr id="i377" class="rowColor">
+<tr id="i380" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/regex/RegexURLFilter.html" title="class in org.apache.nutch.urlfilter.regex">RegexURLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Filters URLs based on a file of regular expressions using the
  <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/util/regex/package-summary.html?is-external=true" class="externalLink"><code>Java Regex implementation</code></a>.</div>
 </th>
 </tr>
-<tr id="i378" class="altColor">
+<tr id="i381" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/api/RegexURLFilterBase.html" title="class in org.apache.nutch.urlfilter.api">RegexURLFilterBase</a></td>
 <th class="colLast" scope="row">
 <div class="block">Generic <a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net"><code>URLFilter</code></a> based on regular
  expressions.</div>
 </th>
 </tr>
-<tr id="i379" class="rowColor">
+<tr id="i382" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/regex/RegexURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.regex">RegexURLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Allows users to do regex substitutions on all/any URLs that are encountered,
  which is useful for stripping session IDs from URLs.</div>
 </th>
 </tr>
-<tr id="i380" class="altColor">
+<tr id="i383" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/microformats/reltag/RelTagIndexingFilter.html" title="class in org.apache.nutch.microformats.reltag">RelTagIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">An <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a> that add <code>tag</code>
  field(s) to the document.</div>
 </th>
 </tr>
-<tr id="i381" class="rowColor">
+<tr id="i384" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/microformats/reltag/RelTagParser.html" title="class in org.apache.nutch.microformats.reltag">RelTagParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">Adds microformat rel-tags of document if found.</div>
 </th>
 </tr>
-<tr id="i382" class="altColor">
+<tr id="i385" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/replace/ReplaceIndexer.html" title="class in org.apache.nutch.indexer.replace">ReplaceIndexer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Do pattern replacements on selected field contents prior to indexing.</div>
 </th>
 </tr>
-<tr id="i383" class="rowColor">
+<tr id="i386" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/ResolverThread.html" title="class in org.apache.nutch.hostdb">ResolverThread</a></td>
 <th class="colLast" scope="row">
 <div class="block">Simple runnable that performs DNS lookup for a single host.</div>
 </th>
 </tr>
-<tr id="i384" class="altColor">
+<tr id="i387" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/ResolveUrls.html" title="class in org.apache.nutch.tools">ResolveUrls</a></td>
 <th class="colLast" scope="row">
 <div class="block">A simple tool that will spin up multiple threads to resolve urls to ip
  addresses.</div>
 </th>
 </tr>
-<tr id="i385" class="rowColor">
+<tr id="i388" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/protocols/Response.html" title="interface in org.apache.nutch.net.protocols">Response</a></td>
 <th class="colLast" scope="row">
 <div class="block">A response interface.</div>
 </th>
 </tr>
-<tr id="i386" class="altColor">
+<tr id="i389" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/protocols/Response.TruncatedContentReason.html" title="enum in org.apache.nutch.net.protocols">Response.TruncatedContentReason</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i387" class="rowColor">
+<tr id="i390" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/protocol/RobotRulesParser.html" title="class in org.apache.nutch.protocol">RobotRulesParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class uses crawler-commons for handling the parsing of
  <code>robots.txt</code> files.</div>
 </th>
 </tr>
-<tr id="i388" class="altColor">
+<tr id="i391" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/ScoreUpdater.html" title="class in org.apache.nutch.scoring.webgraph">ScoreUpdater</a></td>
 <th class="colLast" scope="row">
 <div class="block">Updates the score from the WebGraph node database into the crawl database.</div>
 </th>
 </tr>
-<tr id="i389" class="rowColor">
+<tr id="i392" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/ScoreUpdater.ScoreUpdaterMapper.html" title="class in org.apache.nutch.scoring.webgraph">ScoreUpdater.ScoreUpdaterMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Changes input into ObjectWritables.</div>
 </th>
 </tr>
-<tr id="i390" class="altColor">
+<tr id="i393" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/ScoreUpdater.ScoreUpdaterReducer.html" title="class in org.apache.nutch.scoring.webgraph">ScoreUpdater.ScoreUpdaterReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates new CrawlDatum objects with the updated score from the NodeDb or
  with a cleared score.</div>
 </th>
 </tr>
-<tr id="i391" class="rowColor">
+<tr id="i394" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/ScoringFilter.html" title="interface in org.apache.nutch.scoring">ScoringFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">A contract defining behavior of scoring plugins.</div>
 </th>
 </tr>
-<tr id="i392" class="altColor">
+<tr id="i395" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/ScoringFilterException.html" title="class in org.apache.nutch.scoring">ScoringFilterException</a></td>
 <th class="colLast" scope="row">
 <div class="block">Specialized exception for errors during scoring.</div>
 </th>
 </tr>
-<tr id="i393" class="rowColor">
+<tr id="i396" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/ScoringFilters.html" title="class in org.apache.nutch.scoring">ScoringFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/scoring/ScoringFilter.html" title="interface in org.apache.nutch.scoring"><code>ScoringFilter</code></a> implementing plugins.</div>
 </th>
 </tr>
-<tr id="i394" class="altColor">
+<tr id="i397" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/SeedList.html" title="class in org.apache.nutch.service.model.request">SeedList</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i395" class="rowColor">
+<tr id="i398" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/SeedManager.html" title="interface in org.apache.nutch.service">SeedManager</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i396" class="altColor">
+<tr id="i399" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/SeedManagerImpl.html" title="class in org.apache.nutch.service.impl">SeedManagerImpl</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i397" class="rowColor">
+<tr id="i400" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/resources/SeedResource.html" title="class in org.apache.nutch.service.resources">SeedResource</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i398" class="altColor">
+<tr id="i401" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/SeedUrl.html" title="class in org.apache.nutch.service.model.request">SeedUrl</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i399" class="rowColor">
+<tr id="i402" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentChecker.html" title="class in org.apache.nutch.segment">SegmentChecker</a></td>
 <th class="colLast" scope="row">
 <div class="block">Checks whether a segment is valid, or has a certain status (generated,
@@ -2335,138 +2356,138 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  (e.g., indexing).</div>
 </th>
 </tr>
-<tr id="i400" class="altColor">
+<tr id="i403" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMergeFilter.html" title="interface in org.apache.nutch.segment">SegmentMergeFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Interface used to filter segments during segment merge.</div>
 </th>
 </tr>
-<tr id="i401" class="rowColor">
+<tr id="i404" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMergeFilters.html" title="class in org.apache.nutch.segment">SegmentMergeFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class wraps all <a href="org/apache/nutch/segment/SegmentMergeFilter.html" title="interface in org.apache.nutch.segment"><code>SegmentMergeFilter</code></a> extensions in a single object
  so it is easier to operate on them.</div>
 </th>
 </tr>
-<tr id="i402" class="altColor">
+<tr id="i405" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMerger.html" title="class in org.apache.nutch.segment">SegmentMerger</a></td>
 <th class="colLast" scope="row">
 <div class="block">This tool takes several segments and merges their data together.</div>
 </th>
 </tr>
-<tr id="i403" class="rowColor">
+<tr id="i406" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMerger.ObjectInputFormat.html" title="class in org.apache.nutch.segment">SegmentMerger.ObjectInputFormat</a></td>
 <th class="colLast" scope="row">
 <div class="block">Wraps inputs in an <a href="org/apache/nutch/metadata/MetaWrapper.html" title="class in org.apache.nutch.metadata"><code>MetaWrapper</code></a>, to permit merging different types
  in reduce and use additional metadata.</div>
 </th>
 </tr>
-<tr id="i404" class="altColor">
+<tr id="i407" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMerger.SegmentMergerMapper.html" title="class in org.apache.nutch.segment">SegmentMerger.SegmentMergerMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i405" class="rowColor">
+<tr id="i408" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMerger.SegmentMergerReducer.html" title="class in org.apache.nutch.segment">SegmentMerger.SegmentMergerReducer</a></td>
 <th class="colLast" scope="row">
 <div class="block">NOTE: in selecting the latest version we rely exclusively on the segment
  name (not all segment data contain time information).</div>
 </th>
 </tr>
-<tr id="i406" class="altColor">
+<tr id="i409" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentMerger.SegmentOutputFormat.html" title="class in org.apache.nutch.segment">SegmentMerger.SegmentOutputFormat</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i407" class="rowColor">
+<tr id="i410" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentPart.html" title="class in org.apache.nutch.segment">SegmentPart</a></td>
 <th class="colLast" scope="row">
 <div class="block">Utility class for handling information about segment parts.</div>
 </th>
 </tr>
-<tr id="i408" class="altColor">
+<tr id="i411" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentReader.html" title="class in org.apache.nutch.segment">SegmentReader</a></td>
 <th class="colLast" scope="row">
 <div class="block">Dump the content of a segment.</div>
 </th>
 </tr>
-<tr id="i409" class="rowColor">
+<tr id="i412" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentReader.InputCompatMapper.html" title="class in org.apache.nutch.segment">SegmentReader.InputCompatMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i410" class="altColor">
+<tr id="i413" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentReader.InputCompatReducer.html" title="class in org.apache.nutch.segment">SegmentReader.InputCompatReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i411" class="rowColor">
+<tr id="i414" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentReader.SegmentReaderStats.html" title="class in org.apache.nutch.segment">SegmentReader.SegmentReaderStats</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i412" class="altColor">
+<tr id="i415" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/segment/SegmentReader.TextOutputFormat.html" title="class in org.apache.nutch.segment">SegmentReader.TextOutputFormat</a></td>
 <th class="colLast" scope="row">
 <div class="block">Implements a text output format</div>
 </th>
 </tr>
-<tr id="i413" class="rowColor">
+<tr id="i416" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/SegmentReaderUtil.html" title="class in org.apache.nutch.util">SegmentReaderUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i414" class="altColor">
+<tr id="i417" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/SequenceReader.html" title="class in org.apache.nutch.service.impl">SequenceReader</a></td>
 <th class="colLast" scope="row">
 <div class="block">Enables reading a sequence file and methods provide different 
  ways to read the file.</div>
 </th>
 </tr>
-<tr id="i415" class="rowColor">
+<tr id="i418" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/request/ServiceConfig.html" title="class in org.apache.nutch.service.model.request">ServiceConfig</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i416" class="altColor">
+<tr id="i419" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/model/response/ServiceInfo.html" title="class in org.apache.nutch.service.model.response">ServiceInfo</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i417" class="rowColor">
+<tr id="i420" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/service/resources/ServicesResource.html" title="class in org.apache.nutch.service.resources">ServicesResource</a></td>
 <th class="colLast" scope="row">
 <div class="block">The services resource defines an endpoint to enable the user to carry out
  Nutch jobs like dump, commoncrawldump, etc.</div>
 </th>
 </tr>
-<tr id="i418" class="altColor">
+<tr id="i421" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/service/impl/ServiceWorker.html" title="class in org.apache.nutch.service.impl">ServiceWorker</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i419" class="rowColor">
+<tr id="i422" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/ShowProperties.html" title="class in org.apache.nutch.tools">ShowProperties</a></td>
 <th class="colLast" scope="row">
 <div class="block">Tool to list properties and their values set by the current Nutch
  configuration</div>
 </th>
 </tr>
-<tr id="i420" class="altColor">
+<tr id="i423" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/Signature.html" title="class in org.apache.nutch.crawl">Signature</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i421" class="rowColor">
+<tr id="i424" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/SignatureComparator.html" title="class in org.apache.nutch.crawl">SignatureComparator</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i422" class="altColor">
+<tr id="i425" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/SignatureFactory.html" title="class in org.apache.nutch.crawl">SignatureFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">Factory class, which instantiates a Signature implementation according to the
  current Configuration configuration.</div>
 </th>
 </tr>
-<tr id="i423" class="rowColor">
+<tr id="i426" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/SimilarityModel.html" title="interface in org.apache.nutch.scoring.similarity">SimilarityModel</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i424" class="altColor">
+<tr id="i427" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/similarity/SimilarityScoringFilter.html" title="class in org.apache.nutch.scoring.similarity">SimilarityScoringFilter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i425" class="rowColor">
+<tr id="i428" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></td>
 <th class="colLast" scope="row">
 <div class="block">
@@ -2475,165 +2496,165 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  the metadata) into the CrawlDb.</div>
 </th>
 </tr>
-<tr id="i426" class="altColor">
+<tr id="i429" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/urlnormalizer/slash/SlashURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.slash">SlashURLNormalizer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i427" class="rowColor">
+<tr id="i430" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/solr/SolrConstants.html" title="interface in org.apache.nutch.indexwriter.solr">SolrConstants</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i428" class="altColor">
+<tr id="i431" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/solr/SolrIndexWriter.html" title="class in org.apache.nutch.indexwriter.solr">SolrIndexWriter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i429" class="rowColor">
+<tr id="i432" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexwriter/solr/SolrUtils.html" title="class in org.apache.nutch.indexwriter.solr">SolrUtils</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i430" class="altColor">
+<tr id="i433" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/metadata/SpellCheckedMetadata.html" title="class in org.apache.nutch.metadata">SpellCheckedMetadata</a></td>
 <th class="colLast" scope="row">
 <div class="block">A decorator to Metadata that adds spellchecking capabilities to property
  names.</div>
 </th>
 </tr>
-<tr id="i431" class="rowColor">
+<tr id="i434" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/staticfield/StaticFieldIndexer.html" title="class in org.apache.nutch.indexer.staticfield">StaticFieldIndexer</a></td>
 <th class="colLast" scope="row">
 <div class="block">A simple plugin called at indexing that adds fields with static data.</div>
 </th>
 </tr>
-<tr id="i432" class="altColor">
+<tr id="i435" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/StringUtil.html" title="class in org.apache.nutch.util">StringUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">A collection of String processing utility methods.</div>
 </th>
 </tr>
-<tr id="i433" class="rowColor">
+<tr id="i436" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/collection/Subcollection.html" title="class in org.apache.nutch.collection">Subcollection</a></td>
 <th class="colLast" scope="row">
 <div class="block">SubCollection represents a subset of index, you can define url patterns that
  will indicate that particular page (url) is part of SubCollection.</div>
 </th>
 </tr>
-<tr id="i434" class="altColor">
+<tr id="i437" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/subcollection/SubcollectionIndexingFilter.html" title="class in org.apache.nutch.indexer.subcollection">SubcollectionIndexingFilter</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i435" class="rowColor">
+<tr id="i438" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/SuffixStringMatcher.html" title="class in org.apache.nutch.util">SuffixStringMatcher</a></td>
 <th class="colLast" scope="row">
 <div class="block">A class for efficiently matching <code>String</code>s against a set of
  suffixes.</div>
 </th>
 </tr>
-<tr id="i436" class="altColor">
+<tr id="i439" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/suffix/SuffixURLFilter.html" title="class in org.apache.nutch.urlfilter.suffix">SuffixURLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Filters URLs based on a file of URL suffixes.</div>
 </th>
 </tr>
-<tr id="i437" class="rowColor">
+<tr id="i440" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/TableUtil.html" title="class in org.apache.nutch.util">TableUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i438" class="altColor">
+<tr id="i441" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/TextMD5Signature.html" title="class in org.apache.nutch.crawl">TextMD5Signature</a></td>
 <th class="colLast" scope="row">
 <div class="block">Implementation of a page signature.</div>
 </th>
 </tr>
-<tr id="i439" class="rowColor">
+<tr id="i442" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/TextProfileSignature.html" title="class in org.apache.nutch.crawl">TextProfileSignature</a></td>
 <th class="colLast" scope="row">
 <div class="block">
  An implementation of a page signature.</div>
 </th>
 </tr>
-<tr id="i440" class="altColor">
+<tr id="i443" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/tika/TikaParser.html" title="class in org.apache.nutch.parse.tika">TikaParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">Wrapper for Tika parsers.</div>
 </th>
 </tr>
-<tr id="i441" class="rowColor">
+<tr id="i444" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/TimingUtil.html" title="class in org.apache.nutch.util">TimingUtil</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i442" class="altColor">
+<tr id="i445" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/tld/TLDIndexingFilter.html" title="class in org.apache.nutch.indexer.tld">TLDIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Adds the public suffix (aka.</div>
 </th>
 </tr>
-<tr id="i443" class="rowColor">
+<tr id="i446" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parsefilter/naivebayes/Train.html" title="class in org.apache.nutch.parsefilter.naivebayes">Train</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i444" class="altColor">
+<tr id="i447" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/util/TrieStringMatcher.html" title="class in org.apache.nutch.util">TrieStringMatcher</a></td>
 <th class="colLast" scope="row">
 <div class="block">TrieStringMatcher is a base class for simple tree-based string matching.</div>
 </th>
 </tr>
-<tr id="i445" class="rowColor">
+<tr id="i448" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></td>
 <th class="colLast" scope="row">
 <div class="block">Tool to create a HostDB from the CrawlDB.</div>
 </th>
 </tr>
-<tr id="i446" class="altColor">
+<tr id="i449" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html" title="class in org.apache.nutch.hostdb">UpdateHostDbMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Mapper ingesting HostDB and CrawlDB entries.</div>
 </th>
 </tr>
-<tr id="i447" class="rowColor">
+<tr id="i450" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i448" class="altColor">
+<tr id="i451" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLExemptionFilter.html" title="interface in org.apache.nutch.net">URLExemptionFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Interface used to allow exemptions to external domain resources by overriding <code>db.ignore.external.links</code>.</div>
 </th>
 </tr>
-<tr id="i449" class="rowColor">
+<tr id="i452" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLExemptionFilters.html" title="class in org.apache.nutch.net">URLExemptionFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches <a href="org/apache/nutch/net/URLExemptionFilter.html" title="interface in org.apache.nutch.net"><code>URLExemptionFilter</code></a> implementing plugins.</div>
 </th>
 </tr>
-<tr id="i450" class="altColor">
+<tr id="i453" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net">URLFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">Interface used to limit which URLs enter Nutch.</div>
 </th>
 </tr>
-<tr id="i451" class="rowColor">
+<tr id="i454" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLFilterChecker.html" title="class in org.apache.nutch.net">URLFilterChecker</a></td>
 <th class="colLast" scope="row">
 <div class="block">Checks one given filter or all filters.</div>
 </th>
 </tr>
-<tr id="i452" class="altColor">
+<tr id="i455" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLFilterException.html" title="class in org.apache.nutch.net">URLFilterException</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i453" class="rowColor">
+<tr id="i456" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLFilters.html" title="class in org.apache.nutch.net">URLFilters</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates and caches plugins implementing <a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net"><code>URLFilter</code></a>.</div>
 </th>
 </tr>
-<tr id="i454" class="altColor">
+<tr id="i457" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/indexer/urlmeta/URLMetaIndexingFilter.html" title="class in org.apache.nutch.indexer.urlmeta">URLMetaIndexingFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">This is part of the URL Meta plugin.</div>
 </th>
 </tr>
-<tr id="i455" class="rowColor">
+<tr id="i458" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/urlmeta/URLMetaScoringFilter.html" title="class in org.apache.nutch.scoring.urlmeta">URLMetaScoringFilter</a></td>
 <th class="colLast" scope="row">
 <div class="block">For documentation:
@@ -2641,33 +2662,33 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/scoring/urlmeta/package-summary.html"><code>org.apache.nutch.scoring.urlmeta</code></a></div>
 </th>
 </tr>
-<tr id="i456" class="altColor">
+<tr id="i459" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLNormalizer.html" title="interface in org.apache.nutch.net">URLNormalizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Interface used to convert URLs to normal form and optionally perform
  substitutions</div>
 </th>
 </tr>
-<tr id="i457" class="rowColor">
+<tr id="i460" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLNormalizerChecker.html" title="class in org.apache.nutch.net">URLNormalizerChecker</a></td>
 <th class="colLast" scope="row">
 <div class="block">Checks one given normalizer or all normalizers.</div>
 </th>
 </tr>
-<tr id="i458" class="altColor">
+<tr id="i461" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/net/URLNormalizers.html" title="class in org.apache.nutch.net">URLNormalizers</a></td>
 <th class="colLast" scope="row">
 <div class="block">This class uses a "chained filter" pattern to run defined normalizers.</div>
 </th>
 </tr>
-<tr id="i459" class="rowColor">
+<tr id="i462" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/crawl/URLPartitioner.html" title="class in org.apache.nutch.crawl">URLPartitioner</a></td>
 <th class="colLast" scope="row">
 <div class="block">Partition urls by host, domain name or IP depending on the value of the
  parameter 'partition.url.mode' which can be 'byHost', 'byDomain' or 'byIP'</div>
 </th>
 </tr>
-<tr id="i460" class="altColor">
+<tr id="i463" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/plugin/URLStreamHandlerFactory.html" title="class in org.apache.nutch.plugin">URLStreamHandlerFactory</a></td>
 <th class="colLast" scope="row">
 <div class="block">This URLStreamHandlerFactory knows about all the plugins
@@ -2675,42 +2696,42 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  even if it comes from a plugin classpath.</div>
 </th>
 </tr>
-<tr id="i461" class="rowColor">
+<tr id="i464" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/util/URLUtil.html" title="class in org.apache.nutch.util">URLUtil</a></td>
 <th class="colLast" scope="row">
 <div class="block">Utility class for URL analysis</div>
 </th>
 </tr>
-<tr id="i462" class="altColor">
+<tr id="i465" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/urlfilter/validator/UrlValidator.html" title="class in org.apache.nutch.urlfilter.validator">UrlValidator</a></td>
 <th class="colLast" scope="row">
 <div class="block">
  Validates URLs.</div>
 </th>
 </tr>
-<tr id="i463" class="rowColor">
+<tr id="i466" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/warc/WARCExporter.html" title="class in org.apache.nutch.tools.warc">WARCExporter</a></td>
 <th class="colLast" scope="row">
 <div class="block">MapReduce job to exports Nutch segments as WARC files.</div>
 </th>
 </tr>
-<tr id="i464" class="altColor">
+<tr id="i467" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/warc/WARCExporter.WARCMapReduce.html" title="class in org.apache.nutch.tools.warc">WARCExporter.WARCMapReduce</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i465" class="rowColor">
+<tr id="i468" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/warc/WARCExporter.WARCMapReduce.WARCMapper.html" title="class in org.apache.nutch.tools.warc">WARCExporter.WARCMapReduce.WARCMapper</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i466" class="altColor">
+<tr id="i469" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/warc/WARCExporter.WARCMapReduce.WARCReducer.html" title="class in org.apache.nutch.tools.warc">WARCExporter.WARCMapReduce.WARCReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i467" class="rowColor">
+<tr id="i470" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/tools/WARCUtils.html" title="class in org.apache.nutch.tools">WARCUtils</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i468" class="altColor">
+<tr id="i471" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/WebGraph.html" title="class in org.apache.nutch.scoring.webgraph">WebGraph</a></td>
 <th class="colLast" scope="row">
 <div class="block">Creates three databases, one for inlinks, one for outlinks, and a node
@@ -2718,37 +2739,37 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  score for the url.</div>
 </th>
 </tr>
-<tr id="i469" class="rowColor">
+<tr id="i472" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/WebGraph.OutlinkDb.html" title="class in org.apache.nutch.scoring.webgraph">WebGraph.OutlinkDb</a></td>
 <th class="colLast" scope="row">
 <div class="block">The OutlinkDb creates a database of all outlinks.</div>
 </th>
 </tr>
-<tr id="i470" class="altColor">
+<tr id="i473" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/WebGraph.OutlinkDb.OutlinkDbMapper.html" title="class in org.apache.nutch.scoring.webgraph">WebGraph.OutlinkDb.OutlinkDbMapper</a></td>
 <th class="colLast" scope="row">
 <div class="block">Passes through existing LinkDatum objects from an existing OutlinkDb and
  maps out new LinkDatum objects from new crawls ParseData.</div>
 </th>
 </tr>
-<tr id="i471" class="rowColor">
+<tr id="i474" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/scoring/webgraph/WebGraph.OutlinkDb.OutlinkDbReducer.html" title="class in org.apache.nutch.scoring.webgraph">WebGraph.OutlinkDb.OutlinkDbReducer</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
-<tr id="i472" class="altColor">
+<tr id="i475" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/html/XMLCharacterRecognizer.html" title="class in org.apache.nutch.parse.html">XMLCharacterRecognizer</a></td>
 <th class="colLast" scope="row">
 <div class="block">Class used to verify whether the specified <var>ch</var> conforms to the XML
  1.0 definition of whitespace.</div>
 </th>
 </tr>
-<tr id="i473" class="rowColor">
+<tr id="i476" class="altColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/zip/ZipParser.html" title="class in org.apache.nutch.parse.zip">ZipParser</a></td>
 <th class="colLast" scope="row">
 <div class="block">ZipParser class based on MSPowerPointParser class by Stephan Strittmatter.</div>
 </th>
 </tr>
-<tr id="i474" class="altColor">
+<tr id="i477" class="rowColor">
 <td class="colFirst"><a href="org/apache/nutch/parse/zip/ZipTextExtractor.html" title="class in org.apache.nutch.parse.zip">ZipTextExtractor</a></td>
 <th class="colLast" scope="row">&nbsp;</th>
 </tr>
@@ -2802,7 +2823,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/allclasses.html b/content/documentation/javadoc/api/allclasses.html
index 63955685..111623cd 100644
--- a/content/documentation/javadoc/api/allclasses.html
+++ b/content/documentation/javadoc/api/allclasses.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>All Classes (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>All Classes (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -114,7 +114,6 @@
 <li><a href="org/apache/nutch/urlfilter/domaindenylist/DomainDenylistURLFilter.html" title="class in org.apache.nutch.urlfilter.domaindenylist">DomainDenylistURLFilter</a></li>
 <li><a href="org/apache/nutch/util/DomainStatistics.html" title="class in org.apache.nutch.util">DomainStatistics</a></li>
 <li><a href="org/apache/nutch/util/DomainStatistics.DomainStatisticsCombiner.html" title="class in org.apache.nutch.util">DomainStatistics.DomainStatisticsCombiner</a></li>
-<li><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></li>
 <li><a href="org/apache/nutch/urlfilter/domain/DomainURLFilter.html" title="class in org.apache.nutch.urlfilter.domain">DomainURLFilter</a></li>
 <li><a href="org/apache/nutch/parse/html/DOMBuilder.html" title="class in org.apache.nutch.parse.html">DOMBuilder</a></li>
 <li><a href="org/apache/nutch/parse/html/DOMContentUtils.html" title="class in org.apache.nutch.parse.html">DOMContentUtils</a></li>
@@ -134,6 +133,8 @@
 <li><a href="org/apache/nutch/indexwriter/elastic/ElasticConstants.html" title="interface in org.apache.nutch.indexwriter.elastic"><span class="interfaceName">ElasticConstants</span></a></li>
 <li><a href="org/apache/nutch/indexwriter/elastic/ElasticIndexWriter.html" title="class in org.apache.nutch.indexwriter.elastic">ElasticIndexWriter</a></li>
 <li><a href="org/apache/nutch/util/EncodingDetector.html" title="class in org.apache.nutch.util">EncodingDetector</a></li>
+<li><a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></li>
+<li><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></li>
 <li><a href="org/apache/nutch/exchange/Exchange.html" title="interface in org.apache.nutch.exchange"><span class="interfaceName">Exchange</span></a></li>
 <li><a href="org/apache/nutch/exchange/ExchangeConfig.html" title="class in org.apache.nutch.exchange">ExchangeConfig</a></li>
 <li><a href="org/apache/nutch/exchange/Exchanges.html" title="class in org.apache.nutch.exchange">Exchanges</a></li>
@@ -277,6 +278,7 @@
 <li><a href="org/apache/nutch/indexwriter/kafka/KafkaConstants.html" title="interface in org.apache.nutch.indexwriter.kafka"><span class="interfaceName">KafkaConstants</span></a></li>
 <li><a href="org/apache/nutch/indexwriter/kafka/KafkaIndexWriter.html" title="class in org.apache.nutch.indexwriter.kafka">KafkaIndexWriter</a></li>
 <li><a href="org/apache/nutch/analysis/lang/LanguageIndexingFilter.html" title="class in org.apache.nutch.analysis.lang">LanguageIndexingFilter</a></li>
+<li><a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></li>
 <li><a href="org/apache/nutch/scoring/link/LinkAnalysisScoringFilter.html" title="class in org.apache.nutch.scoring.link">LinkAnalysisScoringFilter</a></li>
 <li><a href="org/apache/nutch/scoring/webgraph/LinkDatum.html" title="class in org.apache.nutch.scoring.webgraph">LinkDatum</a></li>
 <li><a href="org/apache/nutch/crawl/LinkDb.html" title="class in org.apache.nutch.crawl">LinkDb</a></li>
@@ -333,6 +335,7 @@
 <li><a href="org/apache/nutch/indexer/NutchField.html" title="class in org.apache.nutch.indexer">NutchField</a></li>
 <li><a href="org/apache/nutch/indexer/NutchIndexAction.html" title="class in org.apache.nutch.indexer">NutchIndexAction</a></li>
 <li><a href="org/apache/nutch/util/NutchJob.html" title="class in org.apache.nutch.util">NutchJob</a></li>
+<li><a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></li>
 <li><a href="org/apache/nutch/publisher/NutchPublisher.html" title="interface in org.apache.nutch.publisher"><span class="interfaceName">NutchPublisher</span></a></li>
 <li><a href="org/apache/nutch/publisher/NutchPublishers.html" title="class in org.apache.nutch.publisher">NutchPublishers</a></li>
 <li><a href="org/apache/nutch/service/NutchReader.html" title="interface in org.apache.nutch.service"><span class="interfaceName">NutchReader</span></a></li>
diff --git a/content/documentation/javadoc/api/allpackages-index.html b/content/documentation/javadoc/api/allpackages-index.html
index b1565273..5d9b5098 100644
--- a/content/documentation/javadoc/api/allpackages-index.html
+++ b/content/documentation/javadoc/api/allpackages-index.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>All Packages (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>All Packages (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,7 +22,7 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="All Packages (apache-nutch 1.21 API)";
+            parent.document.title="All Packages (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
@@ -299,31 +299,37 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </td>
 </tr>
 <tr class="altColor">
+<th class="colFirst" scope="row"><a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></th>
+<td class="colLast">
+<div class="block">Metrics infrastructure for Apache Nutch.</div>
+</td>
+</tr>
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/microformats/reltag/package-summary.html">org.apache.nutch.microformats.reltag</a></th>
 <td class="colLast">
 <div class="block">A microformats <a href="http://www.microformats.org/wiki/Rel-Tag">Rel-Tag</a>
  Parser/Indexer/Querier plugin.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/package-summary.html">org.apache.nutch.net</a></th>
 <td class="colLast">
 <div class="block">Web-related interfaces: URL <a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net"><code>filters</code></a>
  and <a href="org/apache/nutch/net/URLNormalizer.html" title="interface in org.apache.nutch.net"><code>normalizers</code></a>.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/protocols/package-summary.html">org.apache.nutch.net.protocols</a></th>
 <td class="colLast">
 <div class="block">Helper classes related to the <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a>
  interface, see also <a href="org/apache/nutch/protocol/package-summary.html"><code>org.apache.nutch.protocol</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/ajax/package-summary.html">org.apache.nutch.net.urlnormalizer.ajax</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/basic/package-summary.html">org.apache.nutch.net.urlnormalizer.basic</a></th>
 <td class="colLast">
 <div class="block">URL normalizer performing basic normalizations:
@@ -348,108 +354,108 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  </div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/host/package-summary.html">org.apache.nutch.net.urlnormalizer.host</a></th>
 <td class="colLast">
 <div class="block">URL normalizer renaming hosts to a canonical form listed in the
  configuration file.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/pass/package-summary.html">org.apache.nutch.net.urlnormalizer.pass</a></th>
 <td class="colLast">
 <div class="block">URL normalizer dummy which does not change URLs.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/protocol/package-summary.html">org.apache.nutch.net.urlnormalizer.protocol</a></th>
 <td class="colLast">
 <div class="block">URL normalizer to normalize the protocol for all URLs of a given host or
  domain.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/querystring/package-summary.html">org.apache.nutch.net.urlnormalizer.querystring</a></th>
 <td class="colLast">
 <div class="block">URL normalizer which sort the elements in the query part to avoid duplicates
  by permutations.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/regex/package-summary.html">org.apache.nutch.net.urlnormalizer.regex</a></th>
 <td class="colLast">
 <div class="block">URL normalizer with configurable rules based on regular expressions
  (<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex" class="externalLink"><code>Pattern</code></a>).</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/slash/package-summary.html">org.apache.nutch.net.urlnormalizer.slash</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/package-summary.html">org.apache.nutch.parse</a></th>
 <td class="colLast">
 <div class="block">The <a href="org/apache/nutch/parse/Parse.html" title="interface in org.apache.nutch.parse"><code>Parse</code></a> interface and related classes.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/ext/package-summary.html">org.apache.nutch.parse.ext</a></th>
 <td class="colLast">
 <div class="block">Parse wrapper to run external command to do the parsing.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/feed/package-summary.html">org.apache.nutch.parse.feed</a></th>
 <td class="colLast">
 <div class="block">Parse RSS feeds.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/headings/package-summary.html">org.apache.nutch.parse.headings</a></th>
 <td class="colLast">
 <div class="block">Parse filter to extract headings (h1, h2, etc.) from DOM parse tree.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/html/package-summary.html">org.apache.nutch.parse.html</a></th>
 <td class="colLast">
 <div class="block">An HTML document parsing plugin.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/js/package-summary.html">org.apache.nutch.parse.js</a></th>
 <td class="colLast">
 <div class="block">Parser and parse filter plugin to extract all (possible) links
  from JavaScript files and embedded JavaScript code snippets.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/metatags/package-summary.html">org.apache.nutch.parse.metatags</a></th>
 <td class="colLast">
 <div class="block">Parse filter to extract meta tags: keywords, description, etc.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/tika/package-summary.html">org.apache.nutch.parse.tika</a></th>
 <td class="colLast">
 <div class="block">Parse various document formats with help of
  <a href="https://tika.apache.org/">Apache Tika</a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/zip/package-summary.html">org.apache.nutch.parse.zip</a></th>
 <td class="colLast">
 <div class="block">Parse ZIP files: embedded files are recursively passed to appropriate parsers.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/debug/package-summary.html">org.apache.nutch.parsefilter.debug</a></th>
 <td class="colLast">
 <div class="block">Adds serialized DOM to parse data, useful for debugging, to understand how
  the parser implementation interprets a document (not only HTML).</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/naivebayes/package-summary.html">org.apache.nutch.parsefilter.naivebayes</a></th>
 <td class="colLast">
 <div class="block">Html Parse filter that classifies the outlinks from the parseresult as
@@ -460,38 +466,38 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  list given in parsefilter.naivebayes.wordlist.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/regex/package-summary.html">org.apache.nutch.parsefilter.regex</a></th>
 <td class="colLast">
 <div class="block">RegexParseFilter.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/plugin/package-summary.html">org.apache.nutch.plugin</a></th>
 <td class="colLast">
 <div class="block">The Nutch <a href="org/apache/nutch/plugin/Pluggable.html" title="interface in org.apache.nutch.plugin"><code>Plugin</code></a> System.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/package-summary.html">org.apache.nutch.protocol</a></th>
 <td class="colLast">
 <div class="block">Classes related to the <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a> interface,
  see also <a href="org/apache/nutch/net/protocols/package-summary.html"><code>org.apache.nutch.net.protocols</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/file/package-summary.html">org.apache.nutch.protocol.file</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving local file resources.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/ftp/package-summary.html">org.apache.nutch.protocol.ftp</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the ftp protocol.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/htmlunit/package-summary.html">org.apache.nutch.protocol.htmlunit</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via HTTP/HTTPS using
@@ -501,20 +507,20 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="https://htmlunit.sourceforge.io/">HtmlUnit</a> headless browser.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/http/package-summary.html">org.apache.nutch.protocol.http</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the http protocol.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/http/api/package-summary.html">org.apache.nutch.protocol.http.api</a></th>
 <td class="colLast">
 <div class="block">Common API used by HTTP plugins (<a href="org/apache/nutch/protocol/http/package-summary.html"><code>http</code></a>,
  <a href="org/apache/nutch/protocol/httpclient/package-summary.html"><code>httpclient</code></a>, etc.)</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/httpclient/package-summary.html">org.apache.nutch.protocol.httpclient</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the HTTP andHTTPS
@@ -522,14 +528,14 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  web server as well as proxy server.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/interactiveselenium/package-summary.html">org.apache.nutch.protocol.interactiveselenium</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents using and interacting
  with <a href="https://www.selenium.dev/">Selenium</a>.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/interactiveselenium/handlers/package-summary.html">org.apache.nutch.protocol.interactiveselenium.handlers</a></th>
 <td class="colLast">
 <div class="block">Handler implementations to interact with
@@ -537,7 +543,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/protocol/interactiveselenium/package-summary.html"><code>org.apache.nutch.protocol.interactiveselenium</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/okhttp/package-summary.html">org.apache.nutch.protocol.okhttp</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin for HTTP/HTTPS based on
@@ -545,90 +551,90 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  and/or http/2.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/selenium/package-summary.html">org.apache.nutch.protocol.selenium</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via
  <a href="https://www.selenium.dev/">Selenium</a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/publisher/package-summary.html">org.apache.nutch.publisher</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/publisher/rabbitmq/package-summary.html">org.apache.nutch.publisher.rabbitmq</a></th>
 <td class="colLast">
 <div class="block">Publisher package to implement queues</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/rabbitmq/package-summary.html">org.apache.nutch.rabbitmq</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/package-summary.html">org.apache.nutch.scoring</a></th>
 <td class="colLast">
 <div class="block">The <a href="org/apache/nutch/scoring/ScoringFilter.html" title="interface in org.apache.nutch.scoring"><code>ScoringFilter</code></a> interface.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/depth/package-summary.html">org.apache.nutch.scoring.depth</a></th>
 <td class="colLast">
 <div class="block">Scoring filter to stop crawling at a configurable depth
  (number of "hops" from seed URLs).</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/link/package-summary.html">org.apache.nutch.scoring.link</a></th>
 <td class="colLast">
 <div class="block">Scoring filter used in conjunction with
  <a href="org/apache/nutch/scoring/webgraph/WebGraph.html" title="class in org.apache.nutch.scoring.webgraph"><code>WebGraph</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/metadata/package-summary.html">org.apache.nutch.scoring.metadata</a></th>
 <td class="colLast">
 <div class="block">Metadata Scoring Plugin</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/opic/package-summary.html">org.apache.nutch.scoring.opic</a></th>
 <td class="colLast">
 <div class="block">Scoring filter implementing a variant of the Online Page Importance Computation
  (OPIC) algorithm.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/orphan/package-summary.html">org.apache.nutch.scoring.orphan</a></th>
 <td class="colLast">
 <div class="block">Scoring filter to modify score or status of orphaned pages (no inlinks found
  for a configurable amount of time).</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/similarity/package-summary.html">org.apache.nutch.scoring.similarity</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/similarity/cosine/package-summary.html">org.apache.nutch.scoring.similarity.cosine</a></th>
 <td class="colLast">
 <div class="block">Implements the cosine similarity metric for scoring relevant documents</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/similarity/util/package-summary.html">org.apache.nutch.scoring.similarity.util</a></th>
 <td class="colLast">
 <div class="block">Utility package for Lucene functions.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/urlmeta/package-summary.html">org.apache.nutch.scoring.urlmeta</a></th>
 <td class="colLast">
 <div class="block">URL Meta Tag Scoring Plugin</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/webgraph/package-summary.html">org.apache.nutch.scoring.webgraph</a></th>
 <td class="colLast">
 <div class="block">Scoring implementation based on link analysis
@@ -636,47 +642,47 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  see <a href="org/apache/nutch/scoring/webgraph/WebGraph.html" title="class in org.apache.nutch.scoring.webgraph"><code>WebGraph</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/segment/package-summary.html">org.apache.nutch.segment</a></th>
 <td class="colLast">
 <div class="block">A segment stores all data from on generate/fetch/update cycle:
  fetch list, protocol status, raw content, parsed content, and extracted outgoing links.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/service/package-summary.html">org.apache.nutch.service</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/service/impl/package-summary.html">org.apache.nutch.service.impl</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/service/model/request/package-summary.html">org.apache.nutch.service.model.request</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/service/model/response/package-summary.html">org.apache.nutch.service.model.response</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/service/resources/package-summary.html">org.apache.nutch.service.resources</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/tools/package-summary.html">org.apache.nutch.tools</a></th>
 <td class="colLast">
 <div class="block">Miscellaneous tools.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/tools/arc/package-summary.html">org.apache.nutch.tools.arc</a></th>
 <td class="colLast">
 <div class="block">Tools to read the
  <a href="http://archive.org/web/researcher/ArcFileFormat.php">Arc file format</a>.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/tools/warc/package-summary.html">org.apache.nutch.tools.warc</a></th>
 <td class="colLast">
 <div class="block">Tools to import / export between Nutch segments and
@@ -684,14 +690,14 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  WARC archives</a>.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/api/package-summary.html">org.apache.nutch.urlfilter.api</a></th>
 <td class="colLast">
 <div class="block">Generic <a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net"><code>URL filter</code></a> library,
  abstracting away from regular expression implementations.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/automaton/package-summary.html">org.apache.nutch.urlfilter.automaton</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin based on 
@@ -699,65 +705,65 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  Automata for Java<sup>TM</sup>.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/domain/package-summary.html">org.apache.nutch.urlfilter.domain</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to include only URLs which match an element in a given list of
  domain suffixes, domain names, and/or host names.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/domaindenylist/package-summary.html">org.apache.nutch.urlfilter.domaindenylist</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to exclude URLs by domain suffixes, domain names, and/or host names.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/fast/package-summary.html">org.apache.nutch.urlfilter.fast</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin that first does fast exact suffix matches on host/domain
  names before applying regular expressions to the path component of a URL.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/ignoreexempt/package-summary.html">org.apache.nutch.urlfilter.ignoreexempt</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin which identifies exemptions to external urls when
  when external urls are set to ignore.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/prefix/package-summary.html">org.apache.nutch.urlfilter.prefix</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to include only URLs which match one of a given list of URL prefixes.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/regex/package-summary.html">org.apache.nutch.urlfilter.regex</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to include and/or exclude URLs matching Java regular expressions.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/suffix/package-summary.html">org.apache.nutch.urlfilter.suffix</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to either exclude or include only URLs which match
  one of the given (path) suffixes.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/validator/package-summary.html">org.apache.nutch.urlfilter.validator</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin that validates given urls.</div>
 </td>
 </tr>
-<tr class="altColor">
+<tr class="rowColor">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></th>
 <td class="colLast">
 <div class="block">Miscellaneous utility classes.</div>
 </td>
 </tr>
-<tr class="rowColor">
+<tr class="altColor">
 <th class="colFirst" scope="row"><a href="org/creativecommons/nutch/package-summary.html">org.creativecommons.nutch</a></th>
 <td class="colLast">
 <div class="block">Sample plugins that parse and index Creative Commons metadata.</div>
@@ -814,7 +820,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/constant-values.html b/content/documentation/javadoc/api/constant-values.html
index 8adf3b93..4c8e3a42 100644
--- a/content/documentation/javadoc/api/constant-values.html
+++ b/content/documentation/javadoc/api/constant-values.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>Constant Field Values (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>Constant Field Values (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,7 +22,7 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="Constant Field Values (apache-nutch 1.21 API)";
+            parent.document.title="Constant Field Values (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
@@ -2386,6 +2386,699 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <ul class="blockList">
 <li class="blockList">
 <table class="constantsSummary">
+<caption><span>org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></span><span class="tabEnd">&nbsp;</span></caption>
+<tr>
+<th class="colFirst" scope="col">Modifier and Type</th>
+<th class="colSecond" scope="col">Constant Field</th>
+<th class="colLast" scope="col">Value</th>
+</tr>
+<tbody>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.CLEANING_DELETED_DOCUMENTS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#CLEANING_DELETED_DOCUMENTS_TOTAL">CLEANING_DELETED_DOCUMENTS_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_documents_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.CRAWLDB_GONE_RECORDS_REMOVED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_GONE_RECORDS_REMOVED_TOTAL">CRAWLDB_GONE_RECORDS_REMOVED_TOTAL</a></code></th>
+<td class="colLast"><code>"gone_records_removed_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.CRAWLDB_ORPHAN_RECORDS_REMOVED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_ORPHAN_RECORDS_REMOVED_TOTAL">CRAWLDB_ORPHAN_RECORDS_REMOVED_TOTAL</a></code></th>
+<td class="colLast"><code>"orphan_records_removed_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.CRAWLDB_URLS_FILTERED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_URLS_FILTERED_TOTAL">CRAWLDB_URLS_FILTERED_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_filtered_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.DEDUP_DOCUMENTS_MARKED_DUPLICATE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#DEDUP_DOCUMENTS_MARKED_DUPLICATE_TOTAL">DEDUP_DOCUMENTS_MARKED_DUPLICATE_TOTAL</a></code></th>
+<td class="colLast"><code>"documents_marked_duplicate_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.DOMAIN_STATS_EMPTY_RESULT_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_EMPTY_RESULT_TOTAL">DOMAIN_STATS_EMPTY_RESULT_TOTAL</a></code></th>
+<td class="colLast"><code>"empty_result_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.DOMAIN_STATS_FETCHED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_FETCHED_TOTAL">DOMAIN_STATS_FETCHED_TOTAL</a></code></th>
+<td class="colLast"><code>"fetched_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.DOMAIN_STATS_NOT_FETCHED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_NOT_FETCHED_TOTAL">DOMAIN_STATS_NOT_FETCHED_TOTAL</a></code></th>
+<td class="colLast"><code>"not_fetched_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_INDEXING_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_INDEXING_TOTAL">ERROR_INDEXING_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_indexing_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_NETWORK_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_NETWORK_TOTAL">ERROR_NETWORK_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_network_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_OTHER_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_OTHER_TOTAL">ERROR_OTHER_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_other_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_PARSING_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_PARSING_TOTAL">ERROR_PARSING_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_parsing_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_PROTOCOL_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_PROTOCOL_TOTAL">ERROR_PROTOCOL_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_protocol_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_SCORING_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_SCORING_TOTAL">ERROR_SCORING_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_scoring_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_TIMEOUT_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_TIMEOUT_TOTAL">ERROR_TIMEOUT_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_timeout_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_TOTAL">ERROR_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.ERROR_URL_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_URL_TOTAL">ERROR_URL_TOTAL</a></code></th>
+<td class="colLast"><code>"errors_url_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_ABOVE_EXCEPTION_THRESHOLD_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ABOVE_EXCEPTION_THRESHOLD_TOTAL">FETCHER_ABOVE_EXCEPTION_THRESHOLD_TOTAL</a></code></th>
+<td class="colLast"><code>"above_exception_threshold_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_BYTES_DOWNLOADED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_BYTES_DOWNLOADED_TOTAL">FETCHER_BYTES_DOWNLOADED_TOTAL</a></code></th>
+<td class="colLast"><code>"bytes_downloaded_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_FILTERED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_FILTERED_TOTAL">FETCHER_FILTERED_TOTAL</a></code></th>
+<td class="colLast"><code>"filtered_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_HIT_BY_THROUGHPUT_THRESHOLD_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_THROUGHPUT_THRESHOLD_TOTAL">FETCHER_HIT_BY_THROUGHPUT_THRESHOLD_TOTAL</a></code></th>
+<td class="colLast"><code>"hit_by_throughput_threshold_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_HIT_BY_TIMELIMIT_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_TIMELIMIT_TOTAL">FETCHER_HIT_BY_TIMELIMIT_TOTAL</a></code></th>
+<td class="colLast"><code>"hit_by_timelimit_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_HIT_BY_TIMEOUT_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_TIMEOUT_TOTAL">FETCHER_HIT_BY_TIMEOUT_TOTAL</a></code></th>
+<td class="colLast"><code>"hit_by_timeout_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_HUNG_THREADS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HUNG_THREADS_TOTAL">FETCHER_HUNG_THREADS_TOTAL</a></code></th>
+<td class="colLast"><code>"hung_threads_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_LATENCY">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_LATENCY">FETCHER_LATENCY</a></code></th>
+<td class="colLast"><code>"fetch_latency"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_OUTLINKS_DETECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_OUTLINKS_DETECTED_TOTAL">FETCHER_OUTLINKS_DETECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"outlinks_detected_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_OUTLINKS_FOLLOWING_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_OUTLINKS_FOLLOWING_TOTAL">FETCHER_OUTLINKS_FOLLOWING_TOTAL</a></code></th>
+<td class="colLast"><code>"outlinks_following_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_REDIRECT_COUNT_EXCEEDED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_COUNT_EXCEEDED_TOTAL">FETCHER_REDIRECT_COUNT_EXCEEDED_TOTAL</a></code></th>
+<td class="colLast"><code>"redirect_count_exceeded_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_REDIRECT_DEDUPLICATED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_DEDUPLICATED_TOTAL">FETCHER_REDIRECT_DEDUPLICATED_TOTAL</a></code></th>
+<td class="colLast"><code>"redirect_deduplicated_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_REDIRECT_NOT_CREATED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_NOT_CREATED_TOTAL">FETCHER_REDIRECT_NOT_CREATED_TOTAL</a></code></th>
+<td class="colLast"><code>"redirect_not_created_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_ROBOTS_DEFER_VISITS_DROPPED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DEFER_VISITS_DROPPED_TOTAL">FETCHER_ROBOTS_DEFER_VISITS_DROPPED_TOTAL</a></code></th>
+<td class="colLast"><code>"robots_defer_visits_dropped_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_ROBOTS_DENIED_MAXCRAWLDELAY_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DENIED_MAXCRAWLDELAY_TOTAL">FETCHER_ROBOTS_DENIED_MAXCRAWLDELAY_TOTAL</a></code></th>
+<td class="colLast"><code>"robots_denied_maxcrawldelay_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.FETCHER_ROBOTS_DENIED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DENIED_TOTAL">FETCHER_ROBOTS_DENIED_TOTAL</a></code></th>
+<td class="colLast"><code>"robots_denied_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_EXPR_REJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_EXPR_REJECTED_TOTAL">GENERATOR_EXPR_REJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"expr_rejected_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_HOSTS_AFFECTED_PER_HOST_OVERFLOW_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_HOSTS_AFFECTED_PER_HOST_OVERFLOW_TOTAL">GENERATOR_HOSTS_AFFECTED_PER_HOST_OVERFLOW_TOTAL</a></code></th>
+<td class="colLast"><code>"hosts_affected_per_host_overflow_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_INTERVAL_REJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_INTERVAL_REJECTED_TOTAL">GENERATOR_INTERVAL_REJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"interval_rejected_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_SCHEDULE_REJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_SCHEDULE_REJECTED_TOTAL">GENERATOR_SCHEDULE_REJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"schedule_rejected_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_SCORE_TOO_LOW_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_SCORE_TOO_LOW_TOTAL">GENERATOR_SCORE_TOO_LOW_TOTAL</a></code></th>
+<td class="colLast"><code>"score_too_low_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_STATUS_REJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_STATUS_REJECTED_TOTAL">GENERATOR_STATUS_REJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"status_rejected_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_URL_FILTERS_REJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_URL_FILTERS_REJECTED_TOTAL">GENERATOR_URL_FILTERS_REJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"url_filters_rejected_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_URLS_SKIPPED_PER_HOST_OVERFLOW_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_URLS_SKIPPED_PER_HOST_OVERFLOW_TOTAL">GENERATOR_URLS_SKIPPED_PER_HOST_OVERFLOW_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_skipped_per_host_overflow_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GENERATOR_WAIT_FOR_UPDATE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_WAIT_FOR_UPDATE_TOTAL">GENERATOR_WAIT_FOR_UPDATE_TOTAL</a></code></th>
+<td class="colLast"><code>"wait_for_update_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_CLEANING">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CLEANING">GROUP_CLEANING</a></code></th>
+<td class="colLast"><code>"nutch_cleaning"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_CRAWLDB">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CRAWLDB">GROUP_CRAWLDB</a></code></th>
+<td class="colLast"><code>"nutch_crawldb"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_CRAWLDB_FILTER">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CRAWLDB_FILTER">GROUP_CRAWLDB_FILTER</a></code></th>
+<td class="colLast"><code>"nutch_crawldb_filter"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_DEDUP">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_DEDUP">GROUP_DEDUP</a></code></th>
+<td class="colLast"><code>"nutch_dedup"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_DOMAIN_STATS">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_DOMAIN_STATS">GROUP_DOMAIN_STATS</a></code></th>
+<td class="colLast"><code>"nutch_domain_stats"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_FETCHER">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_FETCHER">GROUP_FETCHER</a></code></th>
+<td class="colLast"><code>"nutch_fetcher"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_FETCHER_OUTLINKS">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_FETCHER_OUTLINKS">GROUP_FETCHER_OUTLINKS</a></code></th>
+<td class="colLast"><code>"nutch_fetcher_outlinks"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_GENERATOR">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_GENERATOR">GROUP_GENERATOR</a></code></th>
+<td class="colLast"><code>"nutch_generator"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_HOSTDB">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_HOSTDB">GROUP_HOSTDB</a></code></th>
+<td class="colLast"><code>"nutch_hostdb"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_INDEXER">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_INDEXER">GROUP_INDEXER</a></code></th>
+<td class="colLast"><code>"nutch_indexer"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_INJECTOR">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_INJECTOR">GROUP_INJECTOR</a></code></th>
+<td class="colLast"><code>"nutch_injector"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_PARSER">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_PARSER">GROUP_PARSER</a></code></th>
+<td class="colLast"><code>"nutch_parser"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_SITEMAP">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_SITEMAP">GROUP_SITEMAP</a></code></th>
+<td class="colLast"><code>"nutch_sitemap"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_WARC_EXPORTER">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_WARC_EXPORTER">GROUP_WARC_EXPORTER</a></code></th>
+<td class="colLast"><code>"nutch_warc_exporter"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.GROUP_WEBGRAPH">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_WEBGRAPH">GROUP_WEBGRAPH</a></code></th>
+<td class="colLast"><code>"nutch_webgraph"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_CHECKED_HOSTS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_CHECKED_HOSTS_TOTAL">HOSTDB_CHECKED_HOSTS_TOTAL</a></code></th>
+<td class="colLast"><code>"checked_hosts_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_EXISTING_KNOWN_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_EXISTING_KNOWN_HOST_TOTAL">HOSTDB_EXISTING_KNOWN_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"existing_known_host_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_EXISTING_UNKNOWN_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_EXISTING_UNKNOWN_HOST_TOTAL">HOSTDB_EXISTING_UNKNOWN_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"existing_unknown_host_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_FILTERED_RECORDS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_FILTERED_RECORDS_TOTAL">HOSTDB_FILTERED_RECORDS_TOTAL</a></code></th>
+<td class="colLast"><code>"filtered_records_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_NEW_KNOWN_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_NEW_KNOWN_HOST_TOTAL">HOSTDB_NEW_KNOWN_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"new_known_host_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_NEW_UNKNOWN_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_NEW_UNKNOWN_HOST_TOTAL">HOSTDB_NEW_UNKNOWN_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"new_unknown_host_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_PURGED_UNKNOWN_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_PURGED_UNKNOWN_HOST_TOTAL">HOSTDB_PURGED_UNKNOWN_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"purged_unknown_host_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_REDISCOVERED_HOST_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_REDISCOVERED_HOST_TOTAL">HOSTDB_REDISCOVERED_HOST_TOTAL</a></code></th>
+<td class="colLast"><code>"rediscovered_host_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_SKIPPED_NOT_ELIGIBLE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_SKIPPED_NOT_ELIGIBLE_TOTAL">HOSTDB_SKIPPED_NOT_ELIGIBLE_TOTAL</a></code></th>
+<td class="colLast"><code>"skipped_not_eligible_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_TOTAL_HOSTS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_TOTAL_HOSTS_TOTAL">HOSTDB_TOTAL_HOSTS_TOTAL</a></code></th>
+<td class="colLast"><code>"total_hosts_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.HOSTDB_URL_LIMIT_NOT_REACHED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_URL_LIMIT_NOT_REACHED_TOTAL">HOSTDB_URL_LIMIT_NOT_REACHED_TOTAL</a></code></th>
+<td class="colLast"><code>"url_limit_not_reached_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_DELETED_BY_INDEXING_FILTER_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_BY_INDEXING_FILTER_TOTAL">INDEXER_DELETED_BY_INDEXING_FILTER_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_by_indexing_filter_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_DELETED_DUPLICATES_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_DUPLICATES_TOTAL">INDEXER_DELETED_DUPLICATES_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_duplicates_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_DELETED_GONE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_GONE_TOTAL">INDEXER_DELETED_GONE_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_gone_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_DELETED_REDIRECTS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_REDIRECTS_TOTAL">INDEXER_DELETED_REDIRECTS_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_redirects_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_DELETED_ROBOTS_NOINDEX_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_ROBOTS_NOINDEX_TOTAL">INDEXER_DELETED_ROBOTS_NOINDEX_TOTAL</a></code></th>
+<td class="colLast"><code>"deleted_robots_noindex_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_INDEXED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_INDEXED_TOTAL">INDEXER_INDEXED_TOTAL</a></code></th>
+<td class="colLast"><code>"indexed_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_LATENCY">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_LATENCY">INDEXER_LATENCY</a></code></th>
+<td class="colLast"><code>"index_latency"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_SKIPPED_BY_INDEXING_FILTER_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_SKIPPED_BY_INDEXING_FILTER_TOTAL">INDEXER_SKIPPED_BY_INDEXING_FILTER_TOTAL</a></code></th>
+<td class="colLast"><code>"skipped_by_indexing_filter_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INDEXER_SKIPPED_NOT_MODIFIED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_SKIPPED_NOT_MODIFIED_TOTAL">INDEXER_SKIPPED_NOT_MODIFIED_TOTAL</a></code></th>
+<td class="colLast"><code>"skipped_not_modified_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_FILTERED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_FILTERED_TOTAL">INJECTOR_URLS_FILTERED_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_filtered_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_INJECTED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_INJECTED_TOTAL">INJECTOR_URLS_INJECTED_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_injected_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_INJECTED_UNIQUE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_INJECTED_UNIQUE_TOTAL">INJECTOR_URLS_INJECTED_UNIQUE_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_injected_unique_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_MERGED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_MERGED_TOTAL">INJECTOR_URLS_MERGED_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_merged_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_PURGED_404_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_PURGED_404_TOTAL">INJECTOR_URLS_PURGED_404_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_purged_404_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.INJECTOR_URLS_PURGED_FILTER_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_PURGED_FILTER_TOTAL">INJECTOR_URLS_PURGED_FILTER_TOTAL</a></code></th>
+<td class="colLast"><code>"urls_purged_filter_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.PARSER_LATENCY">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#PARSER_LATENCY">PARSER_LATENCY</a></code></th>
+<td class="colLast"><code>"parse_latency"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_EXISTING_ENTRIES_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_EXISTING_ENTRIES_TOTAL">SITEMAP_EXISTING_ENTRIES_TOTAL</a></code></th>
+<td class="colLast"><code>"existing_sitemap_entries_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_FAILED_FETCHES_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FAILED_FETCHES_TOTAL">SITEMAP_FAILED_FETCHES_TOTAL</a></code></th>
+<td class="colLast"><code>"failed_fetches_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_FILTERED_FROM_HOSTNAME_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FILTERED_FROM_HOSTNAME_TOTAL">SITEMAP_FILTERED_FROM_HOSTNAME_TOTAL</a></code></th>
+<td class="colLast"><code>"filtered_sitemaps_from_hostname_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_FILTERED_RECORDS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FILTERED_RECORDS_TOTAL">SITEMAP_FILTERED_RECORDS_TOTAL</a></code></th>
+<td class="colLast"><code>"filtered_records_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_FROM_HOSTNAME_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FROM_HOSTNAME_TOTAL">SITEMAP_FROM_HOSTNAME_TOTAL</a></code></th>
+<td class="colLast"><code>"sitemaps_from_hostname_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_NEW_ENTRIES_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_NEW_ENTRIES_TOTAL">SITEMAP_NEW_ENTRIES_TOTAL</a></code></th>
+<td class="colLast"><code>"new_sitemap_entries_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.SITEMAP_SEEDS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_SEEDS_TOTAL">SITEMAP_SEEDS_TOTAL</a></code></th>
+<td class="colLast"><code>"sitemap_seeds_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WARC_MISSING_CONTENT_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_MISSING_CONTENT_TOTAL">WARC_MISSING_CONTENT_TOTAL</a></code></th>
+<td class="colLast"><code>"missing_content_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WARC_MISSING_METADATA_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_MISSING_METADATA_TOTAL">WARC_MISSING_METADATA_TOTAL</a></code></th>
+<td class="colLast"><code>"missing_metadata_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WARC_OMITTED_EMPTY_RESPONSE_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_OMITTED_EMPTY_RESPONSE_TOTAL">WARC_OMITTED_EMPTY_RESPONSE_TOTAL</a></code></th>
+<td class="colLast"><code>"omitted_empty_response_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WARC_RECORDS_GENERATED_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_RECORDS_GENERATED_TOTAL">WARC_RECORDS_GENERATED_TOTAL</a></code></th>
+<td class="colLast"><code>"records_generated_total"</code></td>
+</tr>
+<tr class="rowColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WEBGRAPH_ADDED_LINKS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WEBGRAPH_ADDED_LINKS_TOTAL">WEBGRAPH_ADDED_LINKS_TOTAL</a></code></th>
+<td class="colLast"><code>"added_links_total"</code></td>
+</tr>
+<tr class="altColor">
+<td class="colFirst"><a id="org.apache.nutch.metrics.NutchMetrics.WEBGRAPH_REMOVED_LINKS_TOTAL">
+<!--   -->
+</a><code>public&nbsp;static&nbsp;final&nbsp;<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang" class="externalLink">String</a></code></td>
+<th class="colSecond" scope="row"><code><a href="org/apache/nutch/metrics/NutchMetrics.html#WEBGRAPH_REMOVED_LINKS_TOTAL">WEBGRAPH_REMOVED_LINKS_TOTAL</a></code></th>
+<td class="colLast"><code>"removed_links_total"</code></td>
+</tr>
+</tbody>
+</table>
+</li>
+</ul>
+<ul class="blockList">
+<li class="blockList">
+<table class="constantsSummary">
 <caption><span>org.apache.nutch.microformats.reltag.<a href="org/apache/nutch/microformats/reltag/RelTagParser.html" title="class in org.apache.nutch.microformats.reltag">RelTagParser</a></span><span class="tabEnd">&nbsp;</span></caption>
 <tr>
 <th class="colFirst" scope="col">Modifier and Type</th>
@@ -3696,7 +4389,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/deprecated-list.html b/content/documentation/javadoc/api/deprecated-list.html
index 341fcf5f..243b7ab9 100644
--- a/content/documentation/javadoc/api/deprecated-list.html
+++ b/content/documentation/javadoc/api/deprecated-list.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>Deprecated List (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>Deprecated List (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,7 +22,7 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="Deprecated List (apache-nutch 1.21 API)";
+            parent.document.title="Deprecated List (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
@@ -209,8 +209,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <tr class="altColor">
 <th class="colDeprecatedItemName" scope="row"><a href="org/apache/nutch/util/NutchJob.html#%3Cinit%3E(org.apache.hadoop.conf.Configuration,java.lang.String)">org.apache.nutch.util.NutchJob&#8203;(Configuration, String)</a></th>
 <td class="colLast">
-<div class="deprecationComment">, use instead <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration)</code></a> or
- <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-java.lang.String-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration, String)</code></a>.</div>
+<div class="deprecationComment">, use instead <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration)</code></a> or
+ <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-java.lang.String-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration, String)</code></a>.</div>
 </td>
 </tr>
 </tbody>
@@ -264,7 +264,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/element-list b/content/documentation/javadoc/api/element-list
index e5c799de..cce26453 100644
--- a/content/documentation/javadoc/api/element-list
+++ b/content/documentation/javadoc/api/element-list
@@ -30,6 +30,7 @@ org.apache.nutch.indexwriter.opensearch1x
 org.apache.nutch.indexwriter.rabbit
 org.apache.nutch.indexwriter.solr
 org.apache.nutch.metadata
+org.apache.nutch.metrics
 org.apache.nutch.microformats.reltag
 org.apache.nutch.net
 org.apache.nutch.net.protocols
diff --git a/content/documentation/javadoc/api/help-doc.html b/content/documentation/javadoc/api/help-doc.html
index 53e4ad11..013473d3 100644
--- a/content/documentation/javadoc/api/help-doc.html
+++ b/content/documentation/javadoc/api/help-doc.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>API Help (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>API Help (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,7 +22,7 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="API Help (apache-nutch 1.21 API)";
+            parent.document.title="API Help (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
@@ -276,7 +276,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/index-all.html b/content/documentation/javadoc/api/index-all.html
index 86095829..eb2a5547 100644
--- a/content/documentation/javadoc/api/index-all.html
+++ b/content/documentation/javadoc/api/index-all.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>Index (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>Index (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,7 +22,7 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="Index (apache-nutch 1.21 API)";
+            parent.document.title="Index (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
@@ -506,6 +506,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Constructs a new, empty metadata.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#categorize(java.lang.Throwable)">categorize(Throwable)</a></span> - Static method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Categorizes a throwable into an error type.</div>
+</dd>
 <dt><a href="org/creativecommons/nutch/CCIndexingFilter.html" title="class in org.creativecommons.nutch"><span class="typeNameLink">CCIndexingFilter</span></a> - Class in <a href="org/creativecommons/nutch/package-summary.html">org.creativecommons.nutch</a></dt>
 <dd>
 <div class="block">Adds basic searchable fields to a document.</div>
@@ -650,6 +654,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Simple character substitution which cleans/removes all � chars from a given String.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#CLEANING_DELETED_DOCUMENTS_TOTAL">CLEANING_DELETED_DOCUMENTS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted during cleaning.</div>
+</dd>
 <dt><a href="org/apache/nutch/indexer/CleaningJob.html" title="class in org.apache.nutch.indexer"><span class="typeNameLink">CleaningJob</span></a> - Class in <a href="org/apache/nutch/indexer/package-summary.html">org.apache.nutch.indexer</a></dt>
 <dd>
 <div class="block">The class scans CrawlDB looking for entries with status DB_GONE (404) or
@@ -666,6 +674,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <div class="block">Cleans a <code>MimeType</code> name by removing out the actual <code>MimeType</code>,
  from a string of the form:</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/parse/ParseSegment.ParseSegmentMapper.html#cleanup(org.apache.hadoop.mapreduce.Mapper.Context)">cleanup(Mapper.Context)</a></span> - Method in class org.apache.nutch.parse.<a href="org/apache/nutch/parse/ParseSegment.ParseSegmentMapper.html" title="class in org.apache.nutch.parse">ParseSegment.ParseSegmentMapper</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/CleaningJob.DeleterReducer.html#cleanup(org.apache.hadoop.mapreduce.Reducer.Context)">cleanup(Reducer.Context)</a></span> - Method in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/CleaningJob.DeleterReducer.html" title="class in org.apache.nutch.indexer">CleaningJob.DeleterReducer</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.SelectorReducer.html#cleanup(org.apache.hadoop.mapreduce.Reducer.Context)">cleanup(Reducer.Context)</a></span> - Method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.SelectorReducer.html" title="class in org.apache.nutch.crawl">Generator.SelectorReducer</a></dt>
@@ -674,6 +684,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Shut down all running threads and wait for completion.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerReducer.html#cleanup(org.apache.hadoop.mapreduce.Reducer.Context)">cleanup(Reducer.Context)</a></span> - Method in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerReducer.html" title="class in org.apache.nutch.indexer">IndexerMapReduce.IndexerReducer</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/NutchJob.html#cleanupAfterFailure(org.apache.hadoop.fs.Path,org.apache.hadoop.fs.FileSystem)">cleanupAfterFailure(Path, FileSystem)</a></span> - Static method in class org.apache.nutch.util.<a href="org/apache/nutch/util/NutchJob.html" title="class in org.apache.nutch.util">NutchJob</a></dt>
 <dd>
 <div class="block">Clean up the file system in case of a job failure.</div>
@@ -1084,10 +1096,22 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDb.html#CRAWLDB_ADDITIONS_ALLOWED">CRAWLDB_ADDITIONS_ALLOWED</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDb.html" title="class in org.apache.nutch.crawl">CrawlDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_GONE_RECORDS_REMOVED_TOTAL">CRAWLDB_GONE_RECORDS_REMOVED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Gone (404) records removed during CrawlDb operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_ORPHAN_RECORDS_REMOVED_TOTAL">CRAWLDB_ORPHAN_RECORDS_REMOVED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Orphan records removed during CrawlDb operations.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDb.html#CRAWLDB_PURGE_404">CRAWLDB_PURGE_404</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDb.html" title="class in org.apache.nutch.crawl">CrawlDb</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDb.html#CRAWLDB_PURGE_ORPHANS">CRAWLDB_PURGE_ORPHANS</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDb.html" title="class in org.apache.nutch.crawl">CrawlDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#CRAWLDB_URLS_FILTERED_TOTAL">CRAWLDB_URLS_FILTERED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs filtered during CrawlDb operations.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDbReader.CrawlDbDumpMapper.html#%3Cinit%3E()">CrawlDbDumpMapper()</a></span> - Constructor for class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDbReader.CrawlDbDumpMapper.html" title="class in org.apache.nutch.crawl">CrawlDbReader.CrawlDbDumpMapper</a></dt>
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/crawl/CrawlDbFilter.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">CrawlDbFilter</span></a> - Class in <a href="org/apache/nutch/crawl/package-summary.html">org.apache.nutch.crawl</a></dt>
@@ -1158,11 +1182,11 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/NutchConfiguration.html#create()">create()</a></span> - Static method in class org.apache.nutch.util.<a href="org/apache/nutch/util/NutchConfiguration.html" title="class in org.apache.nutch.util">NutchConfiguration</a></dt>
 <dd>
-<div class="block">Create a <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> for Nutch.</div>
+<div class="block">Create a <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> for Nutch.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/NutchConfiguration.html#create(boolean,java.util.Properties)">create(boolean, Properties)</a></span> - Static method in class org.apache.nutch.util.<a href="org/apache/nutch/util/NutchConfiguration.html" title="class in org.apache.nutch.util">NutchConfiguration</a></dt>
 <dd>
-<div class="block">Create a <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> from supplied properties.</div>
+<div class="block">Create a <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> from supplied properties.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/FetchItem.html#create(org.apache.hadoop.io.Text,org.apache.nutch.crawl.CrawlDatum,java.lang.String)">create(Text, CrawlDatum, String)</a></span> - Static method in class org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/FetchItem.html" title="class in org.apache.nutch.fetcher">FetchItem</a></dt>
 <dd>
@@ -1418,6 +1442,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/service/JobManager.JobType.html#DEDUP">DEDUP</a></span> - org.apache.nutch.service.<a href="org/apache/nutch/service/JobManager.JobType.html" title="enum in org.apache.nutch.service">JobManager.JobType</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#DEDUP_DOCUMENTS_MARKED_DUPLICATE_TOTAL">DEDUP_DOCUMENTS_MARKED_DUPLICATE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents marked as duplicate.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/DeduplicationJob.html#DEDUPLICATION_COMPARE_ORDER">DEDUPLICATION_COMPARE_ORDER</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/DeduplicationJob.html" title="class in org.apache.nutch.crawl">DeduplicationJob</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/DeduplicationJob.html#DEDUPLICATION_GROUP_MODE">DEDUPLICATION_GROUP_MODE</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/DeduplicationJob.html" title="class in org.apache.nutch.crawl">DeduplicationJob</a></dt>
@@ -1433,7 +1461,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/crawl/DeduplicationJob.DBFilter.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">DeduplicationJob.DBFilter</span></a> - Class in <a href="org/apache/nutch/crawl/package-summary.html">org.apache.nutch.crawl</a></dt>
 <dd>&nbsp;</dd>
-<dt><a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">DeduplicationJob.DedupReducer</span></a>&lt;<a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="type parameter in DeduplicationJob.DedupReducer">K</a> extends <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/io/Writable.html?is-external=true" title="class or interface in org.apache.hadoop.io" class="externalL [...]
+<dt><a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">DeduplicationJob.DedupReducer</span></a>&lt;<a href="org/apache/nutch/crawl/DeduplicationJob.DedupReducer.html" title="type parameter in DeduplicationJob.DedupReducer">K</a> extends <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/io/Writable.html?is-external=true" title="class or interface in org.apache.hadoop.io" class="externalL [...]
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/crawl/DeduplicationJob.StatusUpdateReducer.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">DeduplicationJob.StatusUpdateReducer</span></a> - Class in <a href="org/apache/nutch/crawl/package-summary.html">org.apache.nutch.crawl</a></dt>
 <dd>
@@ -1675,6 +1703,18 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexingFiltersChecker.html#doIndex">doIndex</a></span> - Variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexingFiltersChecker.html" title="class in org.apache.nutch.indexer">IndexingFiltersChecker</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_EMPTY_RESULT_TOTAL">DOMAIN_STATS_EMPTY_RESULT_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Empty results in domain statistics.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_FETCHED_TOTAL">DOMAIN_STATS_FETCHED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Fetched URLs in domain statistics.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#DOMAIN_STATS_NOT_FETCHED_TOTAL">DOMAIN_STATS_NOT_FETCHED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Not fetched URLs in domain statistics.</div>
+</dd>
 <dt><a href="org/apache/nutch/urlfilter/domaindenylist/DomainDenylistURLFilter.html" title="class in org.apache.nutch.urlfilter.domaindenylist"><span class="typeNameLink">DomainDenylistURLFilter</span></a> - Class in <a href="org/apache/nutch/urlfilter/domaindenylist/package-summary.html">org.apache.nutch.urlfilter.domaindenylist</a></dt>
 <dd>
 <div class="block">
@@ -1691,8 +1731,6 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/util/DomainStatistics.DomainStatisticsCombiner.html" title="class in org.apache.nutch.util"><span class="typeNameLink">DomainStatistics.DomainStatisticsCombiner</span></a> - Class in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
 <dd>&nbsp;</dd>
-<dt><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util"><span class="typeNameLink">DomainStatistics.MyCounter</span></a> - Enum in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
-<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.DomainStatisticsCombiner.html#%3Cinit%3E()">DomainStatisticsCombiner()</a></span> - Constructor for class org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.DomainStatisticsCombiner.html" title="class in org.apache.nutch.util">DomainStatistics.DomainStatisticsCombiner</a></dt>
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/urlfilter/domain/DomainURLFilter.html" title="class in org.apache.nutch.urlfilter.domain"><span class="typeNameLink">DomainURLFilter</span></a> - Class in <a href="org/apache/nutch/urlfilter/domain/package-summary.html">org.apache.nutch.urlfilter.domain</a></dt>
@@ -1855,8 +1893,14 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/parse/html/DOMContentUtils.LinkParams.html#elName">elName</a></span> - Variable in class org.apache.nutch.parse.html.<a href="org/apache/nutch/parse/html/DOMContentUtils.LinkParams.html" title="class in org.apache.nutch.parse.html">DOMContentUtils.LinkParams</a></dt>
 <dd>&nbsp;</dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html#EMPTY_RESULT">EMPTY_RESULT</a></span> - org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></dt>
-<dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#emitCounters(org.apache.hadoop.mapreduce.TaskInputOutputContext)">emitCounters(TaskInputOutputContext&lt;?, ?, ?, ?&gt;)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Emits all error counters to the Hadoop context.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#emitCounters(org.apache.hadoop.mapreduce.TaskInputOutputContext)">emitCounters(TaskInputOutputContext&lt;?, ?, ?, ?&gt;)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Emits all latency counters to the Hadoop context.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/RobotRulesParser.html#EMPTY_RULES">EMPTY_RULES</a></span> - Static variable in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/RobotRulesParser.html" title="class in org.apache.nutch.protocol">RobotRulesParser</a></dt>
 <dd>
 <div class="block">A <code>BaseRobotRules</code> object appropriate for use when the
@@ -1951,6 +1995,60 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/service/model/request/SeedUrl.html#equals(java.lang.Object)">equals(Object)</a></span> - Method in class org.apache.nutch.service.model.request.<a href="org/apache/nutch/service/model/request/SeedUrl.html" title="class in org.apache.nutch.service.model.request">SeedUrl</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_INDEXING_TOTAL">ERROR_INDEXING_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Indexing filter errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_NETWORK_TOTAL">ERROR_NETWORK_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Network-related errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_OTHER_TOTAL">ERROR_OTHER_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Other uncategorized errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_PARSING_TOTAL">ERROR_PARSING_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Parsing errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_PROTOCOL_TOTAL">ERROR_PROTOCOL_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Protocol errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_SCORING_TOTAL">ERROR_SCORING_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Scoring filter errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_TIMEOUT_TOTAL">ERROR_TIMEOUT_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Timeout errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_TOTAL">ERROR_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Total errors across all categories.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#ERROR_URL_TOTAL">ERROR_URL_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URL-related errors.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html#errorTracker">errorTracker</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html" title="class in org.apache.nutch.hostdb">UpdateHostDbMapper</a></dt>
+<dd>&nbsp;</dd>
+<dt><a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics"><span class="typeNameLink">ErrorTracker</span></a> - Class in <a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></dt>
+<dd>
+<div class="block">A utility class for tracking errors by category with automatic classification.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#%3Cinit%3E(java.lang.String)">ErrorTracker(String)</a></span> - Constructor for class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Creates a new ErrorTracker for the specified counter group.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#%3Cinit%3E(java.lang.String,org.apache.hadoop.mapreduce.TaskInputOutputContext)">ErrorTracker(String, TaskInputOutputContext&lt;?, ?, ?, ?&gt;)</a></span> - Constructor for class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Creates a new ErrorTracker with cached counter references.</div>
+</dd>
+<dt><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics"><span class="typeNameLink">ErrorTracker.ErrorType</span></a> - Enum in <a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></dt>
+<dd>
+<div class="block">Error type categories for classification.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/net/urlnormalizer/ajax/AjaxURLNormalizer.html#escape(java.lang.String)">escape(String)</a></span> - Method in class org.apache.nutch.net.urlnormalizer.ajax.<a href="org/apache/nutch/net/urlnormalizer/ajax/AjaxURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.ajax">AjaxURLNormalizer</a></dt>
 <dd>
 <div class="block">Escape some exotic characters in the fragment part</div>
@@ -2137,8 +2235,6 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/segment/SegmentReader.SegmentReaderStats.html#fetched">fetched</a></span> - Variable in class org.apache.nutch.segment.<a href="org/apache/nutch/segment/SegmentReader.SegmentReaderStats.html" title="class in org.apache.nutch.segment">SegmentReader.SegmentReaderStats</a></dt>
 <dd>&nbsp;</dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html#FETCHED">FETCHED</a></span> - org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></dt>
-<dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/fetcher/Fetcher.html" title="class in org.apache.nutch.fetcher"><span class="typeNameLink">Fetcher</span></a> - Class in <a href="org/apache/nutch/fetcher/package-summary.html">org.apache.nutch.fetcher</a></dt>
 <dd>
 <div class="block">A queue-based fetcher.</div>
@@ -2147,6 +2243,70 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/Fetcher.html#%3Cinit%3E(org.apache.hadoop.conf.Configuration)">Fetcher(Configuration)</a></span> - Constructor for class org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/Fetcher.html" title="class in org.apache.nutch.fetcher">Fetcher</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ABOVE_EXCEPTION_THRESHOLD_TOTAL">FETCHER_ABOVE_EXCEPTION_THRESHOLD_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs dropped due to exception threshold in queue.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_BYTES_DOWNLOADED_TOTAL">FETCHER_BYTES_DOWNLOADED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Total bytes downloaded by fetcher.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_FILTERED_TOTAL">FETCHER_FILTERED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs filtered during fetching.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_THROUGHPUT_THRESHOLD_TOTAL">FETCHER_HIT_BY_THROUGHPUT_THRESHOLD_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs hit by throughput threshold.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_TIMELIMIT_TOTAL">FETCHER_HIT_BY_TIMELIMIT_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs hit by time limit.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HIT_BY_TIMEOUT_TOTAL">FETCHER_HIT_BY_TIMEOUT_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs hit by timeout.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_HUNG_THREADS_TOTAL">FETCHER_HUNG_THREADS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Threads that hung during fetching.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_LATENCY">FETCHER_LATENCY</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Prefix for fetch latency metrics.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_OUTLINKS_DETECTED_TOTAL">FETCHER_OUTLINKS_DETECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Outlinks detected during parsing.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_OUTLINKS_FOLLOWING_TOTAL">FETCHER_OUTLINKS_FOLLOWING_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Outlinks being followed.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_COUNT_EXCEEDED_TOTAL">FETCHER_REDIRECT_COUNT_EXCEEDED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Redirects that exceeded maximum redirect count.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_DEDUPLICATED_TOTAL">FETCHER_REDIRECT_DEDUPLICATED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Redirects deduplicated (already seen).</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_REDIRECT_NOT_CREATED_TOTAL">FETCHER_REDIRECT_NOT_CREATED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">FetchItems not created for redirects.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DEFER_VISITS_DROPPED_TOTAL">FETCHER_ROBOTS_DEFER_VISITS_DROPPED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs dropped due to robots.txt deferred visits.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DENIED_MAXCRAWLDELAY_TOTAL">FETCHER_ROBOTS_DENIED_MAXCRAWLDELAY_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs denied due to crawl delay exceeding maximum.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#FETCHER_ROBOTS_DENIED_TOTAL">FETCHER_ROBOTS_DENIED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs denied by robots.txt.</div>
+</dd>
 <dt><a href="org/apache/nutch/fetcher/Fetcher.FetcherRun.html" title="class in org.apache.nutch.fetcher"><span class="typeNameLink">Fetcher.FetcherRun</span></a> - Class in <a href="org/apache/nutch/fetcher/package-summary.html">org.apache.nutch.fetcher</a></dt>
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/fetcher/Fetcher.InputFormat.html" title="class in org.apache.nutch.fetcher"><span class="typeNameLink">Fetcher.InputFormat</span></a> - Class in <a href="org/apache/nutch/fetcher/package-summary.html">org.apache.nutch.fetcher</a></dt>
@@ -2463,6 +2623,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <div class="block">Adds metadata or otherwise modifies a parse of an HTML document, given the
  DOM tree of a page.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html#filteredRecordsCounter">filteredRecordsCounter</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html" title="class in org.apache.nutch.hostdb">UpdateHostDbMapper</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html#filterNormalize(java.lang.String)">filterNormalize(String)</a></span> - Method in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbMapper.html" title="class in org.apache.nutch.hostdb">UpdateHostDbMapper</a></dt>
 <dd>
 <div class="block">Filters and or normalizes the input hostname by applying the configured URL
@@ -2715,12 +2877,24 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_EXPR">GENERATOR_EXPR</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_EXPR_REJECTED_TOTAL">GENERATOR_EXPR_REJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected by JEXL expression.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_FETCH_DELAY_EXPR">GENERATOR_FETCH_DELAY_EXPR</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_FILTER">GENERATOR_FILTER</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_HOSTDB">GENERATOR_HOSTDB</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_HOSTS_AFFECTED_PER_HOST_OVERFLOW_TOTAL">GENERATOR_HOSTS_AFFECTED_PER_HOST_OVERFLOW_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Hosts affected by per-host overflow.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_INTERVAL_REJECTED_TOTAL">GENERATOR_INTERVAL_REJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected due to fetch interval exceeding threshold.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_MAX_COUNT">GENERATOR_MAX_COUNT</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_MAX_COUNT_EXPR">GENERATOR_MAX_COUNT_EXPR</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
@@ -2735,8 +2909,32 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_RESTRICT_STATUS">GENERATOR_RESTRICT_STATUS</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_SCHEDULE_REJECTED_TOTAL">GENERATOR_SCHEDULE_REJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected by fetch schedule.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_SCORE_TOO_LOW_TOTAL">GENERATOR_SCORE_TOO_LOW_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected due to score below threshold.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_STATUS_REJECTED_TOTAL">GENERATOR_STATUS_REJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected due to status restriction.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Generator.html#GENERATOR_TOP_N">GENERATOR_TOP_N</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Generator.html" title="class in org.apache.nutch.crawl">Generator</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_URL_FILTERS_REJECTED_TOTAL">GENERATOR_URL_FILTERS_REJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs rejected by URL filters.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_URLS_SKIPPED_PER_HOST_OVERFLOW_TOTAL">GENERATOR_URLS_SKIPPED_PER_HOST_OVERFLOW_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs skipped due to per-host overflow.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GENERATOR_WAIT_FOR_UPDATE_TOTAL">GENERATOR_WAIT_FOR_UPDATE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs waiting for CrawlDb update.</div>
+</dd>
 <dt><a href="org/apache/nutch/crawl/Generator.CrawlDbUpdater.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">Generator.CrawlDbUpdater</span></a> - Class in <a href="org/apache/nutch/crawl/package-summary.html">org.apache.nutch.crawl</a></dt>
 <dd>
 <div class="block">Update the CrawlDB so that the next generate won't include the same URLs.</div>
@@ -2791,7 +2989,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dt><a href="org/apache/nutch/util/GenericWritableConfigurable.html" title="class in org.apache.nutch.util"><span class="typeNameLink">GenericWritableConfigurable</span></a> - Class in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
 <dd>
 <div class="block">A generic Writable wrapper that can inject Configuration to
- <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configurable</code></a>s</div>
+ <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configurable</code></a>s</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/GenericWritableConfigurable.html#%3Cinit%3E()">GenericWritableConfigurable()</a></span> - Constructor for class org.apache.nutch.util.<a href="org/apache/nutch/util/GenericWritableConfigurable.html" title="class in org.apache.nutch.util">GenericWritableConfigurable</a></dt>
 <dd>&nbsp;</dd>
@@ -3034,15 +3232,15 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/anchor/AnchorIndexingFilter.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.anchor.<a href="org/apache/nutch/indexer/anchor/AnchorIndexingFilter.html" title="class in org.apache.nutch.indexer.anchor">AnchorIndexingFilter</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.arbitrary.<a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html" title="class in org.apache.nutch.indexer.arbitrary">ArbitraryIndexingFilter</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/basic/BasicIndexingFilter.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.basic.<a href="org/apache/nutch/indexer/basic/BasicIndexingFilter.html" title="class in org.apache.nutch.indexer.basic">BasicIndexingFilter</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/CleaningJob.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/CleaningJob.html" title="class in org.apache.nutch.indexer">CleaningJob</a></dt>
 <dd>&nbsp;</dd>
@@ -3064,7 +3262,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/staticfield/StaticFieldIndexer.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.staticfield.<a href="org/apache/nutch/indexer/staticfield/StaticFieldIndexer.html" title="class in org.apache.nutch.indexer.staticfield">StaticFieldIndexer</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/subcollection/SubcollectionIndexingFilter.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.indexer.subcollection.<a href="org/apache/nutch/indexer/subcollection/SubcollectionIndexingFilter.html" title="class in org.apache.nutch.indexer.subcollection">SubcollectionIndexingFilter</a></dt>
 <dd>&nbsp;</dd>
@@ -3132,11 +3330,11 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/file/File.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.protocol.file.<a href="org/apache/nutch/protocol/file/File.html" title="class in org.apache.nutch.protocol.file">File</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ftp/Ftp.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.protocol.ftp.<a href="org/apache/nutch/protocol/ftp/Ftp.html" title="class in org.apache.nutch.protocol.ftp">Ftp</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/api/HttpBase.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.protocol.http.api.<a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></dt>
 <dd>&nbsp;</dd>
@@ -3146,7 +3344,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/RobotRulesParser.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/RobotRulesParser.html" title="class in org.apache.nutch.protocol">RobotRulesParser</a></dt>
 <dd>
-<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Get the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/publisher/NutchPublishers.html#getConf()">getConf()</a></span> - Method in class org.apache.nutch.publisher.<a href="org/apache/nutch/publisher/NutchPublishers.html" title="class in org.apache.nutch.publisher">NutchPublishers</a></dt>
 <dd>&nbsp;</dd>
@@ -3251,6 +3449,22 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/httpclient/HttpFormAuthentication.html#getCookies()">getCookies()</a></span> - Method in class org.apache.nutch.protocol.httpclient.<a href="org/apache/nutch/protocol/httpclient/HttpFormAuthentication.html" title="class in org.apache.nutch.protocol.httpclient">HttpFormAuthentication</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#getCount()">getCount()</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Returns the number of recorded samples.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#getCount(org.apache.nutch.metrics.ErrorTracker.ErrorType)">getCount(ErrorTracker.ErrorType)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Returns the count for a specific error type.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#getCounterName(java.lang.Throwable)">getCounterName(Throwable)</a></span> - Static method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Gets the counter name for a throwable based on its categorization.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#getCounterName(org.apache.nutch.metrics.ErrorTracker.ErrorType)">getCounterName(ErrorTracker.ErrorType)</a></span> - Static method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Gets the counter name constant for a given error type.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/service/model/request/DbQuery.html#getCrawlId()">getCrawlId()</a></span> - Method in class org.apache.nutch.service.model.request.<a href="org/apache/nutch/service/model/request/DbQuery.html" title="class in org.apache.nutch.service.model.request">DbQuery</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/service/model/request/JobConfig.html#getCrawlId()">getCrawlId()</a></span> - Method in class org.apache.nutch.service.model.request.<a href="org/apache/nutch/service/model/request/JobConfig.html" title="class in org.apache.nutch.service.model.request">JobConfig</a></dt>
@@ -3412,7 +3626,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/FetchScheduleFactory.html#getFetchSchedule(org.apache.hadoop.conf.Configuration)">getFetchSchedule(Configuration)</a></span> - Static method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/FetchScheduleFactory.html" title="class in org.apache.nutch.crawl">FetchScheduleFactory</a></dt>
 <dd>
 <div class="block">Return the FetchSchedule implementation specified within
- the given <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>, or <a href="org/apache/nutch/crawl/DefaultFetchSchedule.html" title="class in org.apache.nutch.crawl"><code>DefaultFetchSchedule</code></a>
+ the given <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>, or <a href="org/apache/nutch/crawl/DefaultFetchSchedule.html" title="class in org.apache.nutch.crawl"><code>DefaultFetchSchedule</code></a>
  by default.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDatum.html#getFetchTime()">getFetchTime()</a></span> - Method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDatum.html" title="class in org.apache.nutch.crawl">CrawlDatum</a></dt>
@@ -3888,6 +4102,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/replace/FieldReplacer.html#getPattern()">getPattern()</a></span> - Method in class org.apache.nutch.indexer.replace.<a href="org/apache/nutch/indexer/replace/FieldReplacer.html" title="class in org.apache.nutch.indexer.replace">FieldReplacer</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#getPercentile(double)">getPercentile(double)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Returns the percentile value for the given quantile.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/plugin/PluginDescriptor.html#getPluginClass()">getPluginClass()</a></span> - Method in class org.apache.nutch.plugin.<a href="org/apache/nutch/plugin/PluginDescriptor.html" title="class in org.apache.nutch.plugin">PluginDescriptor</a></dt>
 <dd>
 <div class="block">Returns the fully qualified name of the class which implements the abstarct
@@ -4107,6 +4325,20 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/CommonCrawlConfig.html#getReverseKeyValue()">getReverseKeyValue()</a></span> - Method in class org.apache.nutch.tools.<a href="org/apache/nutch/tools/CommonCrawlConfig.html" title="class in org.apache.nutch.tools">CommonCrawlConfig</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/file/File.html#getRobotRules(java.net.URL,org.apache.nutch.crawl.CrawlDatum,java.util.List)">getRobotRules(URL, CrawlDatum, List&lt;Content&gt;)</a></span> - Method in class org.apache.nutch.protocol.file.<a href="org/apache/nutch/protocol/file/File.html" title="class in org.apache.nutch.protocol.file">File</a></dt>
+<dd>
+<div class="block">No robots parsing is done for file protocol.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ftp/Ftp.html#getRobotRules(java.net.URL,org.apache.nutch.crawl.CrawlDatum,java.util.List)">getRobotRules(URL, CrawlDatum, List&lt;Content&gt;)</a></span> - Method in class org.apache.nutch.protocol.ftp.<a href="org/apache/nutch/protocol/ftp/Ftp.html" title="class in org.apache.nutch.protocol.ftp">Ftp</a></dt>
+<dd>
+<div class="block">Get the robots rules for a given url</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/api/HttpBase.html#getRobotRules(java.net.URL,org.apache.nutch.crawl.CrawlDatum,java.util.List)">getRobotRules(URL, CrawlDatum, List&lt;Content&gt;)</a></span> - Method in class org.apache.nutch.protocol.http.api.<a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></dt>
+<dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/Protocol.html#getRobotRules(java.net.URL,org.apache.nutch.crawl.CrawlDatum,java.util.List)">getRobotRules(URL, CrawlDatum, List&lt;Content&gt;)</a></span> - Method in interface org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol">Protocol</a></dt>
+<dd>
+<div class="block">Retrieve robot rules applicable for this URL.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/file/File.html#getRobotRules(org.apache.hadoop.io.Text,org.apache.nutch.crawl.CrawlDatum,java.util.List)">getRobotRules(Text, CrawlDatum, List&lt;Content&gt;)</a></span> - Method in class org.apache.nutch.protocol.file.<a href="org/apache/nutch/protocol/file/File.html" title="class in org.apache.nutch.protocol.file">File</a></dt>
 <dd>
 <div class="block">No robots parsing is done for file protocol.</div>
@@ -4212,7 +4444,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/SignatureFactory.html#getSignature(org.apache.hadoop.conf.Configuration)">getSignature(Configuration)</a></span> - Static method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/SignatureFactory.html" title="class in org.apache.nutch.crawl">SignatureFactory</a></dt>
 <dd>
 <div class="block">Return the <a href="org/apache/nutch/crawl/Signature.html" title="class in org.apache.nutch.crawl"><code>Signature</code></a> implementation for a given 
- <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>, or <a href="org/apache/nutch/crawl/MD5Signature.html" title="class in org.apache.nutch.crawl"><code>MD5Signature</code></a> by default.</div>
+ <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>, or <a href="org/apache/nutch/crawl/MD5Signature.html" title="class in org.apache.nutch.crawl"><code>MD5Signature</code></a> by default.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/CommonCrawlConfig.html#getSimpleDateFormat()">getSimpleDateFormat()</a></span> - Method in class org.apache.nutch.tools.<a href="org/apache/nutch/tools/CommonCrawlConfig.html" title="class in org.apache.nutch.tools">CommonCrawlConfig</a></dt>
 <dd>&nbsp;</dd>
@@ -4261,6 +4493,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Return names of collections url is part of</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#getSum()">getSum()</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Returns the sum of all recorded latencies.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ftp/Client.html#getSystemName()">getSystemName()</a></span> - Method in class org.apache.nutch.protocol.ftp.<a href="org/apache/nutch/protocol/ftp/Client.html" title="class in org.apache.nutch.protocol.ftp">Client</a></dt>
 <dd>
 <div class="block">Fetches the system type name from the server and returns the string.</div>
@@ -4343,6 +4579,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Returns the top-level domain name of the URL.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#getTotalCount()">getTotalCount()</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Returns the total count of all errors.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/FetchItemQueues.html#getTotalSize()">getTotalSize()</a></span> - Method in class org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/FetchItemQueues.html" title="class in org.apache.nutch.fetcher">FetchItemQueues</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/parse/Outlink.html#getToUrl()">getToUrl()</a></span> - Method in class org.apache.nutch.parse.<a href="org/apache/nutch/parse/Outlink.html" title="class in org.apache.nutch.parse">Outlink</a></dt>
@@ -4456,6 +4696,66 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Resource is gone.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CLEANING">GROUP_CLEANING</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for cleaning job operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CRAWLDB">GROUP_CRAWLDB</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for CrawlDb operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_CRAWLDB_FILTER">GROUP_CRAWLDB_FILTER</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for CrawlDb filter operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_DEDUP">GROUP_DEDUP</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for deduplication operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_DOMAIN_STATS">GROUP_DOMAIN_STATS</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for domain statistics operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_FETCHER">GROUP_FETCHER</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for fetcher operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_FETCHER_OUTLINKS">GROUP_FETCHER_OUTLINKS</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for fetcher outlink processing.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_GENERATOR">GROUP_GENERATOR</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for generator operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_HOSTDB">GROUP_HOSTDB</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for HostDb operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_INDEXER">GROUP_INDEXER</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for indexer operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_INJECTOR">GROUP_INJECTOR</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for injector operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_PARSER">GROUP_PARSER</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for parser operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_SITEMAP">GROUP_SITEMAP</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for sitemap processing operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_WARC_EXPORTER">GROUP_WARC_EXPORTER</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for WARC export operations.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#GROUP_WEBGRAPH">GROUP_WEBGRAPH</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Counter group for WebGraph operations.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/EncodingDetector.html#guessEncoding(org.apache.nutch.protocol.Content,java.lang.String)">guessEncoding(Content, String)</a></span> - Method in class org.apache.nutch.util.<a href="org/apache/nutch/util/EncodingDetector.html" title="class in org.apache.nutch.util">EncodingDetector</a></dt>
 <dd>
 <div class="block">Guess the encoding with the previously specified list of clues.</div>
@@ -4548,6 +4848,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_CHECK_NEW">HOSTDB_CHECK_NEW</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_CHECKED_HOSTS_TOTAL">HOSTDB_CHECKED_HOSTS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Hosts checked.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_CRAWLDATUM_PROCESSORS">HOSTDB_CRAWLDATUM_PROCESSORS</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/ReadHostDb.html#HOSTDB_DUMP_HEADER">HOSTDB_DUMP_HEADER</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/ReadHostDb.html" title="class in org.apache.nutch.hostdb">ReadHostDb</a></dt>
@@ -4556,10 +4860,30 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/ReadHostDb.html#HOSTDB_DUMP_HOSTNAMES">HOSTDB_DUMP_HOSTNAMES</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/ReadHostDb.html" title="class in org.apache.nutch.hostdb">ReadHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_EXISTING_KNOWN_HOST_TOTAL">HOSTDB_EXISTING_KNOWN_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Existing known hosts.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_EXISTING_UNKNOWN_HOST_TOTAL">HOSTDB_EXISTING_UNKNOWN_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Existing unknown hosts.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/ReadHostDb.html#HOSTDB_FILTER_EXPRESSION">HOSTDB_FILTER_EXPRESSION</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/ReadHostDb.html" title="class in org.apache.nutch.hostdb">ReadHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_FILTERED_RECORDS_TOTAL">HOSTDB_FILTERED_RECORDS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Records filtered in HostDb.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_FORCE_CHECK">HOSTDB_FORCE_CHECK</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_NEW_KNOWN_HOST_TOTAL">HOSTDB_NEW_KNOWN_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">New known hosts discovered.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_NEW_UNKNOWN_HOST_TOTAL">HOSTDB_NEW_UNKNOWN_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">New unknown hosts.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_NUM_RESOLVER_THREADS">HOSTDB_NUM_RESOLVER_THREADS</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_NUMERIC_FIELDS">HOSTDB_NUMERIC_FIELDS</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
@@ -4568,14 +4892,34 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_PURGE_FAILED_HOSTS_THRESHOLD">HOSTDB_PURGE_FAILED_HOSTS_THRESHOLD</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_PURGED_UNKNOWN_HOST_TOTAL">HOSTDB_PURGED_UNKNOWN_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Purged unknown hosts.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_RECHECK_INTERVAL">HOSTDB_RECHECK_INTERVAL</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_REDISCOVERED_HOST_TOTAL">HOSTDB_REDISCOVERED_HOST_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Rediscovered hosts.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_SKIPPED_NOT_ELIGIBLE_TOTAL">HOSTDB_SKIPPED_NOT_ELIGIBLE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Hosts skipped (not eligible).</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_STRING_FIELDS">HOSTDB_STRING_FIELDS</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_TOTAL_HOSTS_TOTAL">HOSTDB_TOTAL_HOSTS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Total hosts processed.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_URL_FILTERING">HOSTDB_URL_FILTERING</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_URL_LIMIT">HOSTDB_URL_LIMIT</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#HOSTDB_URL_LIMIT_NOT_REACHED_TOTAL">HOSTDB_URL_LIMIT_NOT_REACHED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Hosts where URL limit was not reached.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDb.html#HOSTDB_URL_NORMALIZING">HOSTDB_URL_NORMALIZING</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDb.html" title="class in org.apache.nutch.hostdb">UpdateHostDb</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/WARCUtils.html#HOSTNAME">HOSTNAME</a></span> - Static variable in class org.apache.nutch.tools.<a href="org/apache/nutch/tools/WARCUtils.html" title="class in org.apache.nutch.tools">WARCUtils</a></dt>
@@ -4858,6 +5202,14 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/HostDatum.html#incDnsFailures()">incDnsFailures()</a></span> - Method in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/HostDatum.html" title="class in org.apache.nutch.hostdb">HostDatum</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#incrementCounters(java.lang.Throwable)">incrementCounters(Throwable)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Directly increments cached error counters without local accumulation.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#incrementCounters(org.apache.nutch.metrics.ErrorTracker.ErrorType)">incrementCounters(ErrorTracker.ErrorType)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Directly increments cached error counters without local accumulation.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/FetchItemQueue.html#incrementExceptionCounter()">incrementExceptionCounter()</a></span> - Method in class org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/FetchItemQueue.html" title="class in org.apache.nutch.fetcher">FetchItemQueue</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexingJob.html#index(org.apache.hadoop.fs.Path,org.apache.hadoop.fs.Path,java.util.List,boolean)">index(Path, Path, List&lt;Path&gt;, boolean)</a></span> - Method in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexingJob.html" title="class in org.apache.nutch.indexer">IndexingJob</a></dt>
@@ -4886,12 +5238,48 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.html#INDEXER_DELETE_SKIPPED">INDEXER_DELETE_SKIPPED</a></span> - Static variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer">IndexerMapReduce</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_BY_INDEXING_FILTER_TOTAL">INDEXER_DELETED_BY_INDEXING_FILTER_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted by indexing filter.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_DUPLICATES_TOTAL">INDEXER_DELETED_DUPLICATES_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted as duplicates.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_GONE_TOTAL">INDEXER_DELETED_GONE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted because they are gone.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_REDIRECTS_TOTAL">INDEXER_DELETED_REDIRECTS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted due to redirects.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_DELETED_ROBOTS_NOINDEX_TOTAL">INDEXER_DELETED_ROBOTS_NOINDEX_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents deleted due to robots noindex.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_INDEXED_TOTAL">INDEXER_INDEXED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents indexed (added or updated).</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_LATENCY">INDEXER_LATENCY</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Prefix for indexer latency metrics.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.html#INDEXER_NO_COMMIT">INDEXER_NO_COMMIT</a></span> - Static variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer">IndexerMapReduce</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.html#INDEXER_PARAMS">INDEXER_PARAMS</a></span> - Static variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer">IndexerMapReduce</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.html#INDEXER_SKIP_NOTMODIFIED">INDEXER_SKIP_NOTMODIFIED</a></span> - Static variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer">IndexerMapReduce</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_SKIPPED_BY_INDEXING_FILTER_TOTAL">INDEXER_SKIPPED_BY_INDEXING_FILTER_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents skipped by indexing filter.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INDEXER_SKIPPED_NOT_MODIFIED_TOTAL">INDEXER_SKIPPED_NOT_MODIFIED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Documents skipped (not modified).</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerMapper.html#%3Cinit%3E()">IndexerMapper()</a></span> - Constructor for class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexerMapReduce.IndexerMapper.html" title="class in org.apache.nutch.indexer">IndexerMapReduce.IndexerMapper</a></dt>
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/indexer/IndexerMapReduce.html" title="class in org.apache.nutch.indexer"><span class="typeNameLink">IndexerMapReduce</span></a> - Class in <a href="org/apache/nutch/indexer/package-summary.html">org.apache.nutch.indexer</a></dt>
@@ -4929,6 +5317,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/scoring/ScoringFilters.html#indexerScore(org.apache.hadoop.io.Text,org.apache.nutch.indexer.NutchDocument,org.apache.nutch.crawl.CrawlDatum,org.apache.nutch.crawl.CrawlDatum,org.apache.nutch.parse.Parse,org.apache.nutch.crawl.Inlinks,float)">indexerScore(Text, NutchDocument, CrawlDatum, CrawlDatum, Parse, Inlinks, float)</a></span> - Method in class org.apache.nutch.scoring.<a href="org/apache/nutch/scoring/ScoringFilters.html" t [...]
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#INDEXING">INDEXING</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Indexing filter errors</div>
+</dd>
 <dt><a href="org/apache/nutch/indexer/IndexingException.html" title="class in org.apache.nutch.indexer"><span class="typeNameLink">IndexingException</span></a> - Exception in <a href="org/apache/nutch/indexer/package-summary.html">org.apache.nutch.indexer</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/IndexingException.html#%3Cinit%3E()">IndexingException()</a></span> - Constructor for exception org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/IndexingException.html" title="class in org.apache.nutch.indexer">IndexingException</a></dt>
@@ -5004,6 +5396,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/LinkDbReader.html#init(org.apache.hadoop.fs.Path)">init(Path)</a></span> - Method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/LinkDbReader.html" title="class in org.apache.nutch.crawl">LinkDbReader</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#initCounters(org.apache.hadoop.mapreduce.TaskInputOutputContext)">initCounters(TaskInputOutputContext&lt;?, ?, ?, ?&gt;)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Initializes cached counter references from the Hadoop context.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/arc/ArcRecordReader.html#initialize(org.apache.hadoop.mapreduce.InputSplit,org.apache.hadoop.mapreduce.TaskAttemptContext)">initialize(InputSplit, TaskAttemptContext)</a></span> - Method in class org.apache.nutch.tools.arc.<a href="org/apache/nutch/tools/arc/ArcRecordReader.html" title="class in org.apache.nutch.tools.arc">ArcRecordReader</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/collection/Subcollection.html#initialize(org.w3c.dom.Element)">initialize(Element)</a></span> - Method in class org.apache.nutch.collection.<a href="org/apache/nutch/collection/Subcollection.html" title="class in org.apache.nutch.collection">Subcollection</a></dt>
@@ -5072,6 +5468,30 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Injector.html#%3Cinit%3E(org.apache.hadoop.conf.Configuration)">Injector(Configuration)</a></span> - Constructor for class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Injector.html" title="class in org.apache.nutch.crawl">Injector</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_FILTERED_TOTAL">INJECTOR_URLS_FILTERED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs filtered during injection.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_INJECTED_TOTAL">INJECTOR_URLS_INJECTED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs injected.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_INJECTED_UNIQUE_TOTAL">INJECTOR_URLS_INJECTED_UNIQUE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Unique URLs injected.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_MERGED_TOTAL">INJECTOR_URLS_MERGED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs merged with existing CrawlDb entries.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_PURGED_404_TOTAL">INJECTOR_URLS_PURGED_404_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs purged due to 404 status.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#INJECTOR_URLS_PURGED_FILTER_TOTAL">INJECTOR_URLS_PURGED_FILTER_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">URLs purged by filter.</div>
+</dd>
 <dt><a href="org/apache/nutch/crawl/Injector.InjectMapper.html" title="class in org.apache.nutch.crawl"><span class="typeNameLink">Injector.InjectMapper</span></a> - Class in <a href="org/apache/nutch/crawl/package-summary.html">org.apache.nutch.crawl</a></dt>
 <dd>
 <div class="block">InjectMapper reads
@@ -5237,6 +5657,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ProtocolStatus.html#isPermanentFailure()">isPermanentFailure()</a></span> - Method in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/ProtocolStatus.html" title="class in org.apache.nutch.protocol">ProtocolStatus</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/api/HttpBase.html#isProxyException(java.lang.String)">isProxyException(String)</a></span> - Method in class org.apache.nutch.protocol.http.api.<a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/httpclient/HttpFormAuthentication.html#isRedirect()">isRedirect()</a></span> - Method in class org.apache.nutch.protocol.httpclient.<a href="org/apache/nutch/protocol/httpclient/HttpFormAuthentication.html" title="class in org.apache.nutch.protocol.httpclient">HttpFormAuthentication</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ProtocolStatus.html#isRedirect()">isRedirect()</a></span> - Method in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/ProtocolStatus.html" title="class in org.apache.nutch.protocol">ProtocolStatus</a></dt>
@@ -5456,6 +5878,15 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/HostDatum.html#lastCheck">lastCheck</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/HostDatum.html" title="class in org.apache.nutch.hostdb">HostDatum</a></dt>
 <dd>&nbsp;</dd>
+<dt><a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics"><span class="typeNameLink">LatencyTracker</span></a> - Class in <a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></dt>
+<dd>
+<div class="block">A utility class for tracking latency metrics using TDigest for percentile
+ calculation.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#%3Cinit%3E(java.lang.String,java.lang.String)">LatencyTracker(String, String)</a></span> - Constructor for class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Creates a new LatencyTracker.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/StringUtil.html#leftPad(java.lang.String,int)">leftPad(String, int)</a></span> - Static method in class org.apache.nutch.util.<a href="org/apache/nutch/util/StringUtil.html" title="class in org.apache.nutch.util">StringUtil</a></dt>
 <dd>
 <div class="block">Returns a copy of <code>s</code> (left padded) with leading 
@@ -6307,6 +6738,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Returns an array of the names contained in the metadata.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#NETWORK">NETWORK</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Network-related errors (IOException, SocketException, etc.)</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/arc/ArcRecordReader.html#next(org.apache.hadoop.io.Text,org.apache.hadoop.io.BytesWritable)">next(Text, BytesWritable)</a></span> - Method in class org.apache.nutch.tools.arc.<a href="org/apache/nutch/tools/arc/ArcRecordReader.html" title="class in org.apache.nutch.tools.arc">ArcRecordReader</a></dt>
 <dd>
 <div class="block">
@@ -6445,8 +6880,6 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/parse/ParserChecker.html#normalizers">normalizers</a></span> - Variable in class org.apache.nutch.parse.<a href="org/apache/nutch/parse/ParserChecker.html" title="class in org.apache.nutch.parse">ParserChecker</a></dt>
 <dd>&nbsp;</dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html#NOT_FETCHED">NOT_FETCHED</a></span> - org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></dt>
-<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/net/protocols/Response.TruncatedContentReason.html#NOT_TRUNCATED">NOT_TRUNCATED</a></span> - org.apache.nutch.net.protocols.<a href="org/apache/nutch/net/protocols/Response.TruncatedContentReason.html" title="enum in org.apache.nutch.net.protocols">Response.TruncatedContentReason</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ProtocolStatus.html#NOTFETCHING">NOTFETCHING</a></span> - Static variable in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/ProtocolStatus.html" title="class in org.apache.nutch.protocol">ProtocolStatus</a></dt>
@@ -6493,7 +6926,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/util/NutchConfiguration.html" title="class in org.apache.nutch.util"><span class="typeNameLink">NutchConfiguration</span></a> - Class in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
 <dd>
-<div class="block">Utility to create Hadoop <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>s that include Nutch-specific
+<div class="block">Utility to create Hadoop <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a>s that include Nutch-specific
  resources.</div>
 </dd>
 <dt><a href="org/apache/nutch/indexer/NutchDocument.html" title="class in org.apache.nutch.indexer"><span class="typeNameLink">NutchDocument</span></a> - Class in <a href="org/apache/nutch/indexer/package-summary.html">org.apache.nutch.indexer</a></dt>
@@ -6532,15 +6965,19 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/util/NutchJob.html" title="class in org.apache.nutch.util"><span class="typeNameLink">NutchJob</span></a> - Class in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
 <dd>
-<div class="block">A <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job</code></a> for Nutch jobs.</div>
+<div class="block">A <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job</code></a> for Nutch jobs.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/NutchJob.html#%3Cinit%3E(org.apache.hadoop.conf.Configuration,java.lang.String)">NutchJob(Configuration, String)</a></span> - Constructor for class org.apache.nutch.util.<a href="org/apache/nutch/util/NutchJob.html" title="class in org.apache.nutch.util">NutchJob</a></dt>
 <dd>
 <div class="deprecationBlock"><span class="deprecatedLabel">Deprecated.</span>
-<div class="deprecationComment">, use instead <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration)</code></a> or
- <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-java.lang.String-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration, String)</code></a>.</div>
+<div class="deprecationComment">, use instead <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration)</code></a> or
+ <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true#getInstance-org.apache.hadoop.conf.Configuration-java.lang.String-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink"><code>Job.getInstance(Configuration, String)</code></a>.</div>
 </div>
 </dd>
+<dt><a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics"><span class="typeNameLink">NutchMetrics</span></a> - Class in <a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></dt>
+<dd>
+<div class="block">Centralized constants for Hadoop metrics counter groups and names.</div>
+</dd>
 <dt><a href="org/apache/nutch/publisher/NutchPublisher.html" title="interface in org.apache.nutch.publisher"><span class="typeNameLink">NutchPublisher</span></a> - Interface in <a href="org/apache/nutch/publisher/package-summary.html">org.apache.nutch.publisher</a></dt>
 <dd>
 <div class="block">All publisher subscriber model implementations should implement this interface.</div>
@@ -6828,6 +7265,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <div class="block">A Multi-valued Metadata container, and set
  of constant fields for Nutch Metadata.</div>
 </dd>
+<dt><a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a> - package org.apache.nutch.metrics</dt>
+<dd>
+<div class="block">Metrics infrastructure for Apache Nutch.</div>
+</dd>
 <dt><a href="org/apache/nutch/microformats/reltag/package-summary.html">org.apache.nutch.microformats.reltag</a> - package org.apache.nutch.microformats.reltag</dt>
 <dd>
 <div class="block">A microformats <a href="http://www.microformats.org/wiki/Rel-Tag">Rel-Tag</a>
@@ -7175,6 +7616,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/scoring/orphan/OrphanScoringFilter.html#%3Cinit%3E()">OrphanScoringFilter()</a></span> - Constructor for class org.apache.nutch.scoring.orphan.<a href="org/apache/nutch/scoring/orphan/OrphanScoringFilter.html" title="class in org.apache.nutch.scoring.orphan">OrphanScoringFilter</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#OTHER">OTHER</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Other uncategorized errors</div>
+</dd>
 <dt><a href="org/apache/nutch/parse/Outlink.html" title="class in org.apache.nutch.parse"><span class="typeNameLink">Outlink</span></a> - Class in <a href="org/apache/nutch/parse/package-summary.html">org.apache.nutch.parse</a></dt>
 <dd>
 <div class="block">An outgoing link from a page.</div>
@@ -7318,6 +7763,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <div class="block">A parser for content generated by a
  <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a> implementation.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#PARSER_LATENCY">PARSER_LATENCY</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Prefix for parse latency metrics.</div>
+</dd>
 <dt><a href="org/apache/nutch/parse/ParserChecker.html" title="class in org.apache.nutch.parse"><span class="typeNameLink">ParserChecker</span></a> - Class in <a href="org/apache/nutch/parse/package-summary.html">org.apache.nutch.parse</a></dt>
 <dd>
 <div class="block">Parser checker, useful for testing parser.</div>
@@ -7407,6 +7856,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Overloaded constructor</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#PARSING">PARSING</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Parsing errors (ParseException, ParserNotFound)</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/api/HttpBase.html#partialAsTruncated">partialAsTruncated</a></span> - Variable in class org.apache.nutch.protocol.http.api.<a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></dt>
 <dd>
 <div class="block">Whether to save partial fetches as truncated content.</div>
@@ -7655,6 +8108,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">A retriever of url content.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#PROTOCOL">PROTOCOL</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Protocol errors (ProtocolException, ProtocolNotFound)</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/Fetcher.html#PROTOCOL_REDIR">PROTOCOL_REDIR</a></span> - Static variable in class org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/Fetcher.html" title="class in org.apache.nutch.fetcher">Fetcher</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/metadata/Nutch.html#PROTOCOL_STATUS_CODE_KEY">PROTOCOL_STATUS_CODE_KEY</a></span> - Static variable in interface org.apache.nutch.metadata.<a href="org/apache/nutch/metadata/Nutch.html" title="interface in org.apache.nutch.metadata">Nutch</a></dt>
@@ -7979,6 +8436,18 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html#recheckInterval">recheckInterval</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/LatencyTracker.html#record(long)">record(long)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/LatencyTracker.html" title="class in org.apache.nutch.metrics">LatencyTracker</a></dt>
+<dd>
+<div class="block">Records a latency sample.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#recordError(java.lang.Throwable)">recordError(Throwable)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Records an error with automatic categorization based on the throwable type.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.html#recordError(org.apache.nutch.metrics.ErrorTracker.ErrorType)">recordError(ErrorTracker.ErrorType)</a></span> - Method in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.html" title="class in org.apache.nutch.metrics">ErrorTracker</a></dt>
+<dd>
+<div class="block">Records an error with explicit category.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ProtocolStatus.html#REDIR_EXCEEDED">REDIR_EXCEEDED</a></span> - Static variable in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/ProtocolStatus.html" title="class in org.apache.nutch.protocol">ProtocolStatus</a></dt>
 <dd>
 <div class="block">Too many redirects.</div>
@@ -8544,6 +9013,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/scoring/webgraph/ScoreUpdater.ScoreUpdaterReducer.html#%3Cinit%3E()">ScoreUpdaterReducer()</a></span> - Constructor for class org.apache.nutch.scoring.webgraph.<a href="org/apache/nutch/scoring/webgraph/ScoreUpdater.ScoreUpdaterReducer.html" title="class in org.apache.nutch.scoring.webgraph">ScoreUpdater.ScoreUpdaterReducer</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#SCORING">SCORING</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Scoring filter errors</div>
+</dd>
 <dt><a href="org/apache/nutch/scoring/ScoringFilter.html" title="interface in org.apache.nutch.scoring"><span class="typeNameLink">ScoringFilter</span></a> - Interface in <a href="org/apache/nutch/scoring/package-summary.html">org.apache.nutch.scoring</a></dt>
 <dd>
 <div class="block">A contract defining behavior of scoring plugins.</div>
@@ -8822,21 +9295,21 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/anchor/AnchorIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.anchor.<a href="org/apache/nutch/indexer/anchor/AnchorIndexingFilter.html" title="class in org.apache.nutch.indexer.anchor">AnchorIndexingFilter</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.arbitrary.<a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html" title="class in org.apache.nutch.indexer.arbitrary">ArbitraryIndexingFilter</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/basic/BasicIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.basic.<a href="org/apache/nutch/indexer/basic/BasicIndexingFilter.html" title="class in org.apache.nutch.indexer.basic">BasicIndexingFilter</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/CleaningJob.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/CleaningJob.html" title="class in org.apache.nutch.indexer">CleaningJob</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/feed/FeedIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.feed.<a href="org/apache/nutch/indexer/feed/FeedIndexingFilter.html" title="class in org.apache.nutch.indexer.feed">FeedIndexingFilter</a></dt>
 <dd>
-<div class="block">Sets the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object used to configure this
+<div class="block">Sets the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object used to configure this
  <a href="org/apache/nutch/indexer/IndexingFilter.html" title="interface in org.apache.nutch.indexer"><code>IndexingFilter</code></a>.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/filter/MimeTypeIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.filter.<a href="org/apache/nutch/indexer/filter/MimeTypeIndexingFilter.html" title="class in org.apache.nutch.indexer.filter">MimeTypeIndexingFilter</a></dt>
@@ -8855,7 +9328,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/staticfield/StaticFieldIndexer.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.staticfield.<a href="org/apache/nutch/indexer/staticfield/StaticFieldIndexer.html" title="class in org.apache.nutch.indexer.staticfield">StaticFieldIndexer</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/subcollection/SubcollectionIndexingFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.indexer.subcollection.<a href="org/apache/nutch/indexer/subcollection/SubcollectionIndexingFilter.html" title="class in org.apache.nutch.indexer.subcollection">SubcollectionIndexingFilter</a></dt>
 <dd>&nbsp;</dd>
@@ -8908,7 +9381,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/parse/feed/FeedParser.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.parse.feed.<a href="org/apache/nutch/parse/feed/FeedParser.html" title="class in org.apache.nutch.parse.feed">FeedParser</a></dt>
 <dd>
-<div class="block">Sets the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object for this <a href="org/apache/nutch/parse/Parser.html" title="interface in org.apache.nutch.parse"><code>Parser</code></a>.</div>
+<div class="block">Sets the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object for this <a href="org/apache/nutch/parse/Parser.html" title="interface in org.apache.nutch.parse"><code>Parser</code></a>.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/parse/headings/HeadingsParseFilter.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.parse.headings.<a href="org/apache/nutch/parse/headings/HeadingsParseFilter.html" title="class in org.apache.nutch.parse.headings">HeadingsParseFilter</a></dt>
 <dd>&nbsp;</dd>
@@ -8934,15 +9407,15 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/file/File.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.file.<a href="org/apache/nutch/protocol/file/File.html" title="class in org.apache.nutch.protocol.file">File</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/ftp/Ftp.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.ftp.<a href="org/apache/nutch/protocol/ftp/Ftp.html" title="class in org.apache.nutch.protocol.ftp">Ftp</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/htmlunit/Http.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.htmlunit.<a href="org/apache/nutch/protocol/htmlunit/Http.html" title="class in org.apache.nutch.protocol.htmlunit">Http</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object.</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/api/HttpBase.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.http.api.<a href="org/apache/nutch/protocol/http/api/HttpBase.html" title="class in org.apache.nutch.protocol.http.api">HttpBase</a></dt>
 <dd>&nbsp;</dd>
@@ -8950,7 +9423,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/http/Http.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.http.<a href="org/apache/nutch/protocol/http/Http.html" title="class in org.apache.nutch.protocol.http">Http</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object.</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/httpclient/Http.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.httpclient.<a href="org/apache/nutch/protocol/httpclient/Http.html" title="class in org.apache.nutch.protocol.httpclient">Http</a></dt>
 <dd>
@@ -8967,7 +9440,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/protocol/RobotRulesParser.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.protocol.<a href="org/apache/nutch/protocol/RobotRulesParser.html" title="class in org.apache.nutch.protocol">RobotRulesParser</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/publisher/NutchPublishers.html#setConf(org.apache.hadoop.conf.Configuration)">setConf(Configuration)</a></span> - Method in class org.apache.nutch.publisher.<a href="org/apache/nutch/publisher/NutchPublishers.html" title="class in org.apache.nutch.publisher">NutchPublishers</a></dt>
 <dd>&nbsp;</dd>
@@ -9178,7 +9651,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html#setIndexedConf(org.apache.hadoop.conf.Configuration,int)">setIndexedConf(Configuration, int)</a></span> - Method in class org.apache.nutch.indexer.arbitrary.<a href="org/apache/nutch/indexer/arbitrary/ArbitraryIndexingFilter.html" title="class in org.apache.nutch.indexer.arbitrary">ArbitraryIndexingFilter</a></dt>
 <dd>
-<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object for a specific set of values in the config</div>
+<div class="block">Set the <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink"><code>Configuration</code></a> object for a specific set of values in the config</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/service/impl/JobWorker.html#setInfo(org.apache.nutch.service.model.response.JobInfo)">setInfo(JobInfo)</a></span> - Method in class org.apache.nutch.service.impl.<a href="org/apache/nutch/service/impl/JobWorker.html" title="class in org.apache.nutch.service.impl">JobWorker</a></dt>
 <dd>&nbsp;</dd>
@@ -9510,6 +9983,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/LinkDbMerger.LinkDbMergeReducer.html#setup(org.apache.hadoop.mapreduce.Reducer.Context)">setup(Reducer.Context)</a></span> - Method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/LinkDbMerger.LinkDbMergeReducer.html" title="class in org.apache.nutch.crawl">LinkDbMerger.LinkDbMergeReducer</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/tools/warc/WARCExporter.WARCMapReduce.WARCReducer.html#setup(org.apache.hadoop.mapreduce.Reducer.Context)">setup(Reducer.Context)</a></span> - Method in class org.apache.nutch.tools.warc.<a href="org/apache/nutch/tools/warc/WARCExporter.WARCMapReduce.WARCReducer.html" title="class in org.apache.nutch.tools.warc">WARCExporter.WARCMapReduce.WARCReducer</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/segment/SegmentReader.InputCompatReducer.html#setup(org.apache.hadoop.mapreduce.Reducer.Context)">setup(Reducer.Context)</a></span> - Method in class org.apache.nutch.segment.<a href="org/apache/nutch/segment/SegmentReader.InputCompatReducer.html" title="class in org.apache.nutch.segment">SegmentReader.InputCompatReducer</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/CrawlDbReader.CrawlDbStatReducer.html#setup(org.apache.hadoop.mapreduce.Reducer.Context)">setup(Reducer.Context)</a></span> - Method in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/CrawlDbReader.CrawlDbStatReducer.html" title="class in org.apache.nutch.crawl">CrawlDbReader.CrawlDbStatReducer</a></dt>
@@ -9638,10 +10113,38 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/SitemapProcessor.html#SITEMAP_ALWAYS_TRY_SITEMAPXML_ON_ROOT">SITEMAP_ALWAYS_TRY_SITEMAPXML_ON_ROOT</a></span> - Static variable in class org.apache.nutch.util.<a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_EXISTING_ENTRIES_TOTAL">SITEMAP_EXISTING_ENTRIES_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Existing sitemap entries.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FAILED_FETCHES_TOTAL">SITEMAP_FAILED_FETCHES_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Failed sitemap fetches.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FILTERED_FROM_HOSTNAME_TOTAL">SITEMAP_FILTERED_FROM_HOSTNAME_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Sitemaps filtered from hostname.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FILTERED_RECORDS_TOTAL">SITEMAP_FILTERED_RECORDS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Filtered records in sitemap processing.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_FROM_HOSTNAME_TOTAL">SITEMAP_FROM_HOSTNAME_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Sitemaps discovered from hostname.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_NEW_ENTRIES_TOTAL">SITEMAP_NEW_ENTRIES_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">New sitemap entries.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/SitemapProcessor.html#SITEMAP_OVERWRITE_EXISTING">SITEMAP_OVERWRITE_EXISTING</a></span> - Static variable in class org.apache.nutch.util.<a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/SitemapProcessor.html#SITEMAP_REDIR_MAX">SITEMAP_REDIR_MAX</a></span> - Static variable in class org.apache.nutch.util.<a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#SITEMAP_SEEDS_TOTAL">SITEMAP_SEEDS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Seeds extracted from sitemaps.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/SitemapProcessor.html#SITEMAP_SIZE_MAX">SITEMAP_SIZE_MAX</a></span> - Static variable in class org.apache.nutch.util.<a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/SitemapProcessor.html#SITEMAP_STRICT_PARSING">SITEMAP_STRICT_PARSING</a></span> - Static variable in class org.apache.nutch.util.<a href="org/apache/nutch/util/SitemapProcessor.html" title="class in org.apache.nutch.util">SitemapProcessor</a></dt>
@@ -9688,6 +10191,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Receive notification of a skipped entity.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html#skippedNotEligibleCounter">skippedNotEligibleCounter</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></dt>
+<dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/net/urlnormalizer/slash/SlashURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.slash"><span class="typeNameLink">SlashURLNormalizer</span></a> - Class in <a href="org/apache/nutch/net/urlnormalizer/slash/package-summary.html">org.apache.nutch.net.urlnormalizer.slash</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/net/urlnormalizer/slash/SlashURLNormalizer.html#%3Cinit%3E()">SlashURLNormalizer()</a></span> - Constructor for class org.apache.nutch.net.urlnormalizer.slash.<a href="org/apache/nutch/net/urlnormalizer/slash/SlashURLNormalizer.html" title="class in org.apache.nutch.net.urlnormalizer.slash">SlashURLNormalizer</a></dt>
@@ -10127,6 +10632,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">The network timeout in millisecond</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#TIMEOUT">TIMEOUT</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Timeout errors (SocketTimeoutException)</div>
+</dd>
 <dt><a href="org/apache/nutch/util/TimingUtil.html" title="class in org.apache.nutch.util"><span class="typeNameLink">TimingUtil</span></a> - Class in <a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/TimingUtil.html#%3Cinit%3E()">TimingUtil()</a></span> - Constructor for class org.apache.nutch.util.<a href="org/apache/nutch/util/TimingUtil.html" title="class in org.apache.nutch.util">TimingUtil</a></dt>
@@ -10247,6 +10756,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Get the HTTP format of the specified date.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html#totalHostsCounter">totalHostsCounter</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></dt>
+<dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/util/URLUtil.html#toUNICODE(java.lang.String)">toUNICODE(String)</a></span> - Static method in class org.apache.nutch.util.<a href="org/apache/nutch/util/URLUtil.html" title="class in org.apache.nutch.util">URLUtil</a></dt>
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/net/protocols/HttpDateFormat.html#toZonedDateTime(java.lang.String)">toZonedDateTime(String)</a></span> - Static method in class org.apache.nutch.net.protocols.<a href="org/apache/nutch/net/protocols/HttpDateFormat.html" title="class in org.apache.nutch.net.protocols">HttpDateFormat</a></dt>
@@ -10409,6 +10920,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/tools/AbstractCommonCrawlFormat.html#url">url</a></span> - Variable in class org.apache.nutch.tools.<a href="org/apache/nutch/tools/AbstractCommonCrawlFormat.html" title="class in org.apache.nutch.tools">AbstractCommonCrawlFormat</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#URL">URL</a></span> - org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">URL-related errors (MalformedURLException, URLFilterException)</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/crawl/Injector.html#URL_FILTER_NORMALIZE_ALL">URL_FILTER_NORMALIZE_ALL</a></span> - Static variable in class org.apache.nutch.crawl.<a href="org/apache/nutch/crawl/Injector.html" title="class in org.apache.nutch.crawl">Injector</a></dt>
 <dd>
 <div class="block">property to pass value of command-line option -filterNormalizeAll to mapper</div>
@@ -10497,6 +11012,8 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>&nbsp;</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html#urlLimit">urlLimit</a></span> - Static variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html#urlLimitNotReachedCounter">urlLimitNotReachedCounter</a></span> - Variable in class org.apache.nutch.hostdb.<a href="org/apache/nutch/hostdb/UpdateHostDbReducer.html" title="class in org.apache.nutch.hostdb">UpdateHostDbReducer</a></dt>
+<dd>&nbsp;</dd>
 <dt><a href="org/apache/nutch/indexer/urlmeta/URLMetaIndexingFilter.html" title="class in org.apache.nutch.indexer.urlmeta"><span class="typeNameLink">URLMetaIndexingFilter</span></a> - Class in <a href="org/apache/nutch/indexer/urlmeta/package-summary.html">org.apache.nutch.indexer.urlmeta</a></dt>
 <dd>
 <div class="block">This is part of the URL Meta plugin.</div>
@@ -10614,6 +11131,10 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Returns the enum constant of this type with the specified name.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#valueOf(java.lang.String)">valueOf(String)</a></span> - Static method in enum org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
+<dd>
+<div class="block">Returns the enum constant of this type with the specified name.</div>
+</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/net/protocols/Response.TruncatedContentReason.html#valueOf(java.lang.String)">valueOf(String)</a></span> - Static method in enum org.apache.nutch.net.protocols.<a href="org/apache/nutch/net/protocols/Response.TruncatedContentReason.html" title="enum in org.apache.nutch.net.protocols">Response.TruncatedContentReason</a></dt>
 <dd>
 <div class="block">Returns the enum constant of this type with the specified name.</div>
@@ -10650,11 +11171,12 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 <dd>
 <div class="block">Returns the enum constant of this type with the specified name.</div>
 </dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html#valueOf(java.lang.String)">valueOf(String)</a></span> - Static method in enum org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></dt>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/FetcherThreadEvent.PublishEventType.html#values()">values()</a></span> - Static method in enum org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/FetcherThreadEvent.PublishEventType.html" title="enum in org.apache.nutch.fetcher">FetcherThreadEvent.PublishEventType</a></dt>
 <dd>
-<div class="block">Returns the enum constant of this type with the specified name.</div>
+<div class="block">Returns an array containing the constants of this enum type, in
+the order they are declared.</div>
 </dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/fetcher/FetcherThreadEvent.PublishEventType.html#values()">values()</a></span> - Static method in enum org.apache.nutch.fetcher.<a href="org/apache/nutch/fetcher/FetcherThreadEvent.PublishEventType.html" title="enum in org.apache.nutch.fetcher">FetcherThreadEvent.PublishEventType</a></dt>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html#values()">values()</a></span> - Static method in enum org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/ErrorTracker.ErrorType.html" title="enum in org.apache.nutch.metrics">ErrorTracker.ErrorType</a></dt>
 <dd>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared.</div>
@@ -10704,11 +11226,6 @@ the order they are declared.</div>
 <div class="block">Returns an array containing the constants of this enum type, in
 the order they are declared.</div>
 </dd>
-<dt><span class="memberNameLink"><a href="org/apache/nutch/util/DomainStatistics.MyCounter.html#values()">values()</a></span> - Static method in enum org.apache.nutch.util.<a href="org/apache/nutch/util/DomainStatistics.MyCounter.html" title="enum in org.apache.nutch.util">DomainStatistics.MyCounter</a></dt>
-<dd>
-<div class="block">Returns an array containing the constants of this enum type, in
-the order they are declared.</div>
-</dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/indexer/NutchDocument.html#VERSION">VERSION</a></span> - Static variable in class org.apache.nutch.indexer.<a href="org/apache/nutch/indexer/NutchDocument.html" title="class in org.apache.nutch.indexer">NutchDocument</a></dt>
 <dd>&nbsp;</dd>
 </dl>
@@ -10721,6 +11238,22 @@ the order they are declared.</div>
 <dd>
 <div class="block">Scan the document adding attributes to metadata.</div>
 </dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_MISSING_CONTENT_TOTAL">WARC_MISSING_CONTENT_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Missing content in WARC export.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_MISSING_METADATA_TOTAL">WARC_MISSING_METADATA_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Missing metadata in WARC export.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_OMITTED_EMPTY_RESPONSE_TOTAL">WARC_OMITTED_EMPTY_RESPONSE_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Omitted empty responses in WARC export.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WARC_RECORDS_GENERATED_TOTAL">WARC_RECORDS_GENERATED_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">WARC records generated.</div>
+</dd>
 <dt><a href="org/apache/nutch/tools/warc/WARCExporter.html" title="class in org.apache.nutch.tools.warc"><span class="typeNameLink">WARCExporter</span></a> - Class in <a href="org/apache/nutch/tools/warc/package-summary.html">org.apache.nutch.tools.warc</a></dt>
 <dd>
 <div class="block">MapReduce job to exports Nutch segments as WARC files.</div>
@@ -10753,6 +11286,14 @@ the order they are declared.</div>
 </dd>
 <dt><span class="memberNameLink"><a href="org/apache/nutch/scoring/webgraph/WebGraph.html#%3Cinit%3E()">WebGraph()</a></span> - Constructor for class org.apache.nutch.scoring.webgraph.<a href="org/apache/nutch/scoring/webgraph/WebGraph.html" title="class in org.apache.nutch.scoring.webgraph">WebGraph</a></dt>
 <dd>&nbsp;</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WEBGRAPH_ADDED_LINKS_TOTAL">WEBGRAPH_ADDED_LINKS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Links added to WebGraph.</div>
+</dd>
+<dt><span class="memberNameLink"><a href="org/apache/nutch/metrics/NutchMetrics.html#WEBGRAPH_REMOVED_LINKS_TOTAL">WEBGRAPH_REMOVED_LINKS_TOTAL</a></span> - Static variable in class org.apache.nutch.metrics.<a href="org/apache/nutch/metrics/NutchMetrics.html" title="class in org.apache.nutch.metrics">NutchMetrics</a></dt>
+<dd>
+<div class="block">Links removed from WebGraph.</div>
+</dd>
 <dt><a href="org/apache/nutch/scoring/webgraph/WebGraph.OutlinkDb.html" title="class in org.apache.nutch.scoring.webgraph"><span class="typeNameLink">WebGraph.OutlinkDb</span></a> - Class in <a href="org/apache/nutch/scoring/webgraph/package-summary.html">org.apache.nutch.scoring.webgraph</a></dt>
 <dd>
 <div class="block">The OutlinkDb creates a database of all outlinks.</div>
@@ -11058,7 +11599,7 @@ the order they are declared.</div>
 </a></div>
 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
 </footer>
 </body>
 </html>
diff --git a/content/documentation/javadoc/api/index.html b/content/documentation/javadoc/api/index.html
index 08ba93ee..5d2b42ca 100644
--- a/content/documentation/javadoc/api/index.html
+++ b/content/documentation/javadoc/api/index.html
@@ -2,10 +2,10 @@
 <!-- NewPage -->
 <html lang="en">
 <head>
-<!-- Generated by javadoc (11.0.27) on Wed Jul 16 12:49:41 CEST 2025 -->
-<title>Overview (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>Overview (apache-nutch 1.22 API)</title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
-<meta name="dc.created" content="2025-07-16">
+<meta name="dc.created" content="2026-02-12">
 <link rel="stylesheet" type="text/css" href="stylesheet.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery/jquery-ui.min.css" title="Style">
 <link rel="stylesheet" type="text/css" href="jquery-ui.overrides.css" title="Style">
@@ -22,13 +22,13 @@
 <script type="text/javascript"><!--
     try {
         if (location.href.indexOf('is-external=true') == -1) {
-            parent.document.title="Overview (apache-nutch 1.21 API)";
+            parent.document.title="Overview (apache-nutch 1.22 API)";
         }
     }
     catch(err) {
     }
 //-->
-var data = {"i0":4096,"i1":4096,"i2":1,"i3":1,"i4":512,"i5":1,"i6":1,"i7":1,"i8":1024,"i9":1024,"i10":1024,"i11":1024,"i12":1024,"i13":1024,"i14":1024,"i15":1024,"i16":1024,"i17":1024,"i18":1024,"i19":1024,"i20":1024,"i21":1024,"i22":1024,"i23":2048,"i24":2048,"i25":2048,"i26":2048,"i27":2048,"i28":2048,"i29":2048,"i30":2048,"i31":1,"i32":4096,"i33":1,"i34":1,"i35":16,"i36":16,"i37":16,"i38":16,"i39":16,"i40":16,"i41":16,"i42":16,"i43":1,"i44":64,"i45":64,"i46":128,"i47":64,"i48":64,"i49 [...]
+var data = {"i0":4096,"i1":4096,"i2":1,"i3":1,"i4":512,"i5":1,"i6":1,"i7":1,"i8":1024,"i9":1024,"i10":1024,"i11":1024,"i12":1024,"i13":1024,"i14":1024,"i15":1024,"i16":1024,"i17":1024,"i18":1024,"i19":1024,"i20":1024,"i21":1024,"i22":1024,"i23":2048,"i24":2048,"i25":2048,"i26":2048,"i27":2048,"i28":2048,"i29":2048,"i30":2048,"i31":1,"i32":1,"i33":4096,"i34":1,"i35":1,"i36":16,"i37":16,"i38":16,"i39":16,"i40":16,"i41":16,"i42":16,"i43":16,"i44":1,"i45":64,"i46":64,"i47":128,"i48":64,"i49" [...]
 var tabs = {65535:["t0","All Packages"],1:["t1","Core"],2:["t2","Plugins API"],4:["t4","Protocol Plugins"],8:["t8","URL Filter Plugins"],16:["t16","URL Normalizer Plugins"],32:["t32","Scoring Plugins"],64:["t64","Parse Plugins"],128:["t128","Parse Filter Plugins"],256:["t256","Publisher Plugins"],512:["t512","Exchange Plugins"],1024:["t1024","Indexing Filter Plugins"],2048:["t2048","Indexer Plugins"],4096:["t4096","Misc. Plugins"]};
 var altColor = "altColor";
 var rowColor = "rowColor";
@@ -101,7 +101,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </header>
 <main role="main">
 <div class="header">
-<h1 class="title">apache-nutch 1.21 API</h1>
+<h1 class="title">apache-nutch 1.22 API</h1>
 </div>
 <div class="contentContainer">
 <div class="block"><p>Apache Nutch is a highly extensible and scalable open source web crawler software project.</p>
@@ -307,31 +307,37 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
 </td>
 </tr>
 <tr class="altColor" id="i32">
+<th class="colFirst" scope="row"><a href="org/apache/nutch/metrics/package-summary.html">org.apache.nutch.metrics</a></th>
+<td class="colLast">
+<div class="block">Metrics infrastructure for Apache Nutch.</div>
+</td>
+</tr>
+<tr class="rowColor" id="i33">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/microformats/reltag/package-summary.html">org.apache.nutch.microformats.reltag</a></th>
 <td class="colLast">
 <div class="block">A microformats <a href="http://www.microformats.org/wiki/Rel-Tag">Rel-Tag</a>
  Parser/Indexer/Querier plugin.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i33">
+<tr class="altColor" id="i34">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/package-summary.html">org.apache.nutch.net</a></th>
 <td class="colLast">
 <div class="block">Web-related interfaces: URL <a href="org/apache/nutch/net/URLFilter.html" title="interface in org.apache.nutch.net"><code>filters</code></a>
  and <a href="org/apache/nutch/net/URLNormalizer.html" title="interface in org.apache.nutch.net"><code>normalizers</code></a>.</div>
 </td>
 </tr>
-<tr class="altColor" id="i34">
+<tr class="rowColor" id="i35">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/protocols/package-summary.html">org.apache.nutch.net.protocols</a></th>
 <td class="colLast">
 <div class="block">Helper classes related to the <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a>
  interface, see also <a href="org/apache/nutch/protocol/package-summary.html"><code>org.apache.nutch.protocol</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i35">
+<tr class="altColor" id="i36">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/ajax/package-summary.html">org.apache.nutch.net.urlnormalizer.ajax</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor" id="i36">
+<tr class="rowColor" id="i37">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/basic/package-summary.html">org.apache.nutch.net.urlnormalizer.basic</a></th>
 <td class="colLast">
 <div class="block">URL normalizer performing basic normalizations:
@@ -356,108 +362,108 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  </div>
 </td>
 </tr>
-<tr class="rowColor" id="i37">
+<tr class="altColor" id="i38">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/host/package-summary.html">org.apache.nutch.net.urlnormalizer.host</a></th>
 <td class="colLast">
 <div class="block">URL normalizer renaming hosts to a canonical form listed in the
  configuration file.</div>
 </td>
 </tr>
-<tr class="altColor" id="i38">
+<tr class="rowColor" id="i39">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/pass/package-summary.html">org.apache.nutch.net.urlnormalizer.pass</a></th>
 <td class="colLast">
 <div class="block">URL normalizer dummy which does not change URLs.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i39">
+<tr class="altColor" id="i40">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/protocol/package-summary.html">org.apache.nutch.net.urlnormalizer.protocol</a></th>
 <td class="colLast">
 <div class="block">URL normalizer to normalize the protocol for all URLs of a given host or
  domain.</div>
 </td>
 </tr>
-<tr class="altColor" id="i40">
+<tr class="rowColor" id="i41">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/querystring/package-summary.html">org.apache.nutch.net.urlnormalizer.querystring</a></th>
 <td class="colLast">
 <div class="block">URL normalizer which sort the elements in the query part to avoid duplicates
  by permutations.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i41">
+<tr class="altColor" id="i42">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/regex/package-summary.html">org.apache.nutch.net.urlnormalizer.regex</a></th>
 <td class="colLast">
 <div class="block">URL normalizer with configurable rules based on regular expressions
  (<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java/util/regex/Pattern.html?is-external=true" title="class or interface in java.util.regex" class="externalLink"><code>Pattern</code></a>).</div>
 </td>
 </tr>
-<tr class="altColor" id="i42">
+<tr class="rowColor" id="i43">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/net/urlnormalizer/slash/package-summary.html">org.apache.nutch.net.urlnormalizer.slash</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor" id="i43">
+<tr class="altColor" id="i44">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/package-summary.html">org.apache.nutch.parse</a></th>
 <td class="colLast">
 <div class="block">The <a href="org/apache/nutch/parse/Parse.html" title="interface in org.apache.nutch.parse"><code>Parse</code></a> interface and related classes.</div>
 </td>
 </tr>
-<tr class="altColor" id="i44">
+<tr class="rowColor" id="i45">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/ext/package-summary.html">org.apache.nutch.parse.ext</a></th>
 <td class="colLast">
 <div class="block">Parse wrapper to run external command to do the parsing.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i45">
+<tr class="altColor" id="i46">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/feed/package-summary.html">org.apache.nutch.parse.feed</a></th>
 <td class="colLast">
 <div class="block">Parse RSS feeds.</div>
 </td>
 </tr>
-<tr class="altColor" id="i46">
+<tr class="rowColor" id="i47">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/headings/package-summary.html">org.apache.nutch.parse.headings</a></th>
 <td class="colLast">
 <div class="block">Parse filter to extract headings (h1, h2, etc.) from DOM parse tree.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i47">
+<tr class="altColor" id="i48">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/html/package-summary.html">org.apache.nutch.parse.html</a></th>
 <td class="colLast">
 <div class="block">An HTML document parsing plugin.</div>
 </td>
 </tr>
-<tr class="altColor" id="i48">
+<tr class="rowColor" id="i49">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/js/package-summary.html">org.apache.nutch.parse.js</a></th>
 <td class="colLast">
 <div class="block">Parser and parse filter plugin to extract all (possible) links
  from JavaScript files and embedded JavaScript code snippets.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i49">
+<tr class="altColor" id="i50">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/metatags/package-summary.html">org.apache.nutch.parse.metatags</a></th>
 <td class="colLast">
 <div class="block">Parse filter to extract meta tags: keywords, description, etc.</div>
 </td>
 </tr>
-<tr class="altColor" id="i50">
+<tr class="rowColor" id="i51">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/tika/package-summary.html">org.apache.nutch.parse.tika</a></th>
 <td class="colLast">
 <div class="block">Parse various document formats with help of
  <a href="https://tika.apache.org/">Apache Tika</a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i51">
+<tr class="altColor" id="i52">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parse/zip/package-summary.html">org.apache.nutch.parse.zip</a></th>
 <td class="colLast">
 <div class="block">Parse ZIP files: embedded files are recursively passed to appropriate parsers.</div>
 </td>
 </tr>
-<tr class="altColor" id="i52">
+<tr class="rowColor" id="i53">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/debug/package-summary.html">org.apache.nutch.parsefilter.debug</a></th>
 <td class="colLast">
 <div class="block">Adds serialized DOM to parse data, useful for debugging, to understand how
  the parser implementation interprets a document (not only HTML).</div>
 </td>
 </tr>
-<tr class="rowColor" id="i53">
+<tr class="altColor" id="i54">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/naivebayes/package-summary.html">org.apache.nutch.parsefilter.naivebayes</a></th>
 <td class="colLast">
 <div class="block">Html Parse filter that classifies the outlinks from the parseresult as
@@ -468,38 +474,38 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  list given in parsefilter.naivebayes.wordlist.</div>
 </td>
 </tr>
-<tr class="altColor" id="i54">
+<tr class="rowColor" id="i55">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/parsefilter/regex/package-summary.html">org.apache.nutch.parsefilter.regex</a></th>
 <td class="colLast">
 <div class="block">RegexParseFilter.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i55">
+<tr class="altColor" id="i56">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/plugin/package-summary.html">org.apache.nutch.plugin</a></th>
 <td class="colLast">
 <div class="block">The Nutch <a href="org/apache/nutch/plugin/Pluggable.html" title="interface in org.apache.nutch.plugin"><code>Plugin</code></a> System.</div>
 </td>
 </tr>
-<tr class="altColor" id="i56">
+<tr class="rowColor" id="i57">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/package-summary.html">org.apache.nutch.protocol</a></th>
 <td class="colLast">
 <div class="block">Classes related to the <a href="org/apache/nutch/protocol/Protocol.html" title="interface in org.apache.nutch.protocol"><code>Protocol</code></a> interface,
  see also <a href="org/apache/nutch/net/protocols/package-summary.html"><code>org.apache.nutch.net.protocols</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i57">
+<tr class="altColor" id="i58">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/file/package-summary.html">org.apache.nutch.protocol.file</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving local file resources.</div>
 </td>
 </tr>
-<tr class="altColor" id="i58">
+<tr class="rowColor" id="i59">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/ftp/package-summary.html">org.apache.nutch.protocol.ftp</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the ftp protocol.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i59">
+<tr class="altColor" id="i60">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/htmlunit/package-summary.html">org.apache.nutch.protocol.htmlunit</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via HTTP/HTTPS using
@@ -509,20 +515,20 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="https://htmlunit.sourceforge.io/">HtmlUnit</a> headless browser.</div>
 </td>
 </tr>
-<tr class="altColor" id="i60">
+<tr class="rowColor" id="i61">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/http/package-summary.html">org.apache.nutch.protocol.http</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the http protocol.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i61">
+<tr class="altColor" id="i62">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/http/api/package-summary.html">org.apache.nutch.protocol.http.api</a></th>
 <td class="colLast">
 <div class="block">Common API used by HTTP plugins (<a href="org/apache/nutch/protocol/http/package-summary.html"><code>http</code></a>,
  <a href="org/apache/nutch/protocol/httpclient/package-summary.html"><code>httpclient</code></a>, etc.)</div>
 </td>
 </tr>
-<tr class="altColor" id="i62">
+<tr class="rowColor" id="i63">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/httpclient/package-summary.html">org.apache.nutch.protocol.httpclient</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via the HTTP andHTTPS
@@ -530,14 +536,14 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  web server as well as proxy server.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i63">
+<tr class="altColor" id="i64">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/interactiveselenium/package-summary.html">org.apache.nutch.protocol.interactiveselenium</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents using and interacting
  with <a href="https://www.selenium.dev/">Selenium</a>.</div>
 </td>
 </tr>
-<tr class="altColor" id="i64">
+<tr class="rowColor" id="i65">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/interactiveselenium/handlers/package-summary.html">org.apache.nutch.protocol.interactiveselenium.handlers</a></th>
 <td class="colLast">
 <div class="block">Handler implementations to interact with
@@ -545,7 +551,7 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  <a href="org/apache/nutch/protocol/interactiveselenium/package-summary.html"><code>org.apache.nutch.protocol.interactiveselenium</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i65">
+<tr class="altColor" id="i66">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/okhttp/package-summary.html">org.apache.nutch.protocol.okhttp</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin for HTTP/HTTPS based on
@@ -553,90 +559,90 @@ $('.navPadding').css('padding-top', $('.fixedNav').css("height"));
  and/or http/2.</div>
 </td>
 </tr>
-<tr class="altColor" id="i66">
+<tr class="rowColor" id="i67">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/protocol/selenium/package-summary.html">org.apache.nutch.protocol.selenium</a></th>
 <td class="colLast">
 <div class="block">Protocol plugin which supports retrieving documents via
  <a href="https://www.selenium.dev/">Selenium</a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i67">
+<tr class="altColor" id="i68">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/publisher/package-summary.html">org.apache.nutch.publisher</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor" id="i68">
+<tr class="rowColor" id="i69">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/publisher/rabbitmq/package-summary.html">org.apache.nutch.publisher.rabbitmq</a></th>
 <td class="colLast">
 <div class="block">Publisher package to implement queues</div>
 </td>
 </tr>
-<tr class="rowColor" id="i69">
+<tr class="altColor" id="i70">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/rabbitmq/package-summary.html">org.apache.nutch.rabbitmq</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="altColor" id="i70">
+<tr class="rowColor" id="i71">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/package-summary.html">org.apache.nutch.scoring</a></th>
 <td class="colLast">
 <div class="block">The <a href="org/apache/nutch/scoring/ScoringFilter.html" title="interface in org.apache.nutch.scoring"><code>ScoringFilter</code></a> interface.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i71">
+<tr class="altColor" id="i72">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/depth/package-summary.html">org.apache.nutch.scoring.depth</a></th>
 <td class="colLast">
 <div class="block">Scoring filter to stop crawling at a configurable depth
  (number of "hops" from seed URLs).</div>
 </td>
 </tr>
-<tr class="altColor" id="i72">
+<tr class="rowColor" id="i73">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/link/package-summary.html">org.apache.nutch.scoring.link</a></th>
 <td class="colLast">
 <div class="block">Scoring filter used in conjunction with
  <a href="org/apache/nutch/scoring/webgraph/WebGraph.html" title="class in org.apache.nutch.scoring.webgraph"><code>WebGraph</code></a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i73">
+<tr class="altColor" id="i74">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/metadata/package-summary.html">org.apache.nutch.scoring.metadata</a></th>
 <td class="colLast">
 <div class="block">Metadata Scoring Plugin</div>
 </td>
 </tr>
-<tr class="altColor" id="i74">
+<tr class="rowColor" id="i75">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/opic/package-summary.html">org.apache.nutch.scoring.opic</a></th>
 <td class="colLast">
 <div class="block">Scoring filter implementing a variant of the Online Page Importance Computation
  (OPIC) algorithm.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i75">
+<tr class="altColor" id="i76">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/orphan/package-summary.html">org.apache.nutch.scoring.orphan</a></th>
 <td class="colLast">
 <div class="block">Scoring filter to modify score or status of orphaned pages (no inlinks found
  for a configurable amount of time).</div>
 </td>
 </tr>
-<tr class="altColor" id="i76">
+<tr class="rowColor" id="i77">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/similarity/package-summary.html">org.apache.nutch.scoring.similarity</a></th>
 <td class="colLast">&nbsp;</td>
 </tr>
-<tr class="rowColor" id="i77">
+<tr class="altColor" id="i78">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/similarity/cosine/package-summary.html">org.apache.nutch.scoring.similarity.cosine</a></th>
 <td class="colLast">
 <div class="block">Implements the cosine similarity metric for scoring relevant documents</div>
 </td>
 </tr>
-<tr class="altColor" id="i78">
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 <td class="colLast">
 <div class="block">Utility package for Lucene functions.</div>
 </td>
 </tr>
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 <th class="colFirst" scope="row"><a href="org/apache/nutch/scoring/urlmeta/package-summary.html">org.apache.nutch.scoring.urlmeta</a></th>
 <td class="colLast">
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 </td>
 </tr>
-<tr class="altColor" id="i80">
+<tr class="rowColor" id="i81">
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 </td>
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 </td>
 </tr>
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-<tr class="rowColor" id="i85">
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 <td class="colLast">&nbsp;</td>
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 <td class="colLast">
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  <a href="http://archive.org/web/researcher/ArcFileFormat.php">Arc file format</a>.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i89">
+<tr class="altColor" id="i90">
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 <td class="colLast">
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  abstracting away from regular expression implementations.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i91">
+<tr class="altColor" id="i92">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/automaton/package-summary.html">org.apache.nutch.urlfilter.automaton</a></th>
 <td class="colLast">
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 </tr>
-<tr class="altColor" id="i92">
+<tr class="rowColor" id="i93">
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 <td class="colLast">
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  domain suffixes, domain names, and/or host names.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i93">
+<tr class="altColor" id="i94">
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 <div class="block">URL filter plugin to exclude URLs by domain suffixes, domain names, and/or host names.</div>
 </td>
 </tr>
-<tr class="altColor" id="i94">
+<tr class="rowColor" id="i95">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/fast/package-summary.html">org.apache.nutch.urlfilter.fast</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin that first does fast exact suffix matches on host/domain
  names before applying regular expressions to the path component of a URL.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i95">
+<tr class="altColor" id="i96">
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 <div class="block">URL filter plugin which identifies exemptions to external urls when
  when external urls are set to ignore.</div>
 </td>
 </tr>
-<tr class="altColor" id="i96">
+<tr class="rowColor" id="i97">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/prefix/package-summary.html">org.apache.nutch.urlfilter.prefix</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to include only URLs which match one of a given list of URL prefixes.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i97">
+<tr class="altColor" id="i98">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/regex/package-summary.html">org.apache.nutch.urlfilter.regex</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to include and/or exclude URLs matching Java regular expressions.</div>
 </td>
 </tr>
-<tr class="altColor" id="i98">
+<tr class="rowColor" id="i99">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/suffix/package-summary.html">org.apache.nutch.urlfilter.suffix</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin to either exclude or include only URLs which match
  one of the given (path) suffixes.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i99">
+<tr class="altColor" id="i100">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/urlfilter/validator/package-summary.html">org.apache.nutch.urlfilter.validator</a></th>
 <td class="colLast">
 <div class="block">URL filter plugin that validates given urls.</div>
 </td>
 </tr>
-<tr class="altColor" id="i100">
+<tr class="rowColor" id="i101">
 <th class="colFirst" scope="row"><a href="org/apache/nutch/util/package-summary.html">org.apache.nutch.util</a></th>
 <td class="colLast">
 <div class="block">Miscellaneous utility classes.</div>
 </td>
 </tr>
-<tr class="rowColor" id="i101">
+<tr class="altColor" id="i102">
 <th class="colFirst" scope="row"><a href="org/creativecommons/nutch/package-summary.html">org.creativecommons.nutch</a></th>
 <td class="colLast">
 <div class="block">Sample plugins that parse and index Creative Commons metadata.</div>
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-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
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@@ -1,6 +1,6 @@
-/*! jQuery UI - v1.13.2 - 2023-02-27
-* http://jqueryui.com
+/*! jQuery UI - v1.14.1 - 2025-01-13
+* https://jqueryui.com
 * Includes: core.css, autocomplete.css, menu.css
-* Copyright jQuery Foundation and other contributors; Licensed MIT */
+* Copyright OpenJS Foundation and other contributors; Licensed MIT */
 
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-/*! jQuery UI - v1.13.2 - 2023-02-27
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+* https://jqueryui.com
 * Includes: widget.js, position.js, keycode.js, unique-id.js, widgets/autocomplete.js, widgets/menu.js
-* Copyright jQuery Foundation and other contributors; Licensed MIT */
+* Copyright OpenJS Foundation and other contributors; Licensed MIT */
 
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-## jQuery UI v1.13.2
+## jQuery UI v1.14.1
 
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+Copyright OpenJS Foundation and other contributors, https://openjsf.org/
 
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index 09fa3b5e..c27acb40 100644
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+<title>HTMLLanguageParser (apache-nutch 1.22 API)</title>
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+<dd><code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configurable</a></code>, <code><a href="../../parse/HtmlParseFilter.html" title="interface in org.apache.nutch.parse">HtmlParseFilter</a></code>, <code><a href="../../plugin/Pluggable.html" title="interface in org.apache.nutch.plugin">Pluggable</a></code></dd>
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+<pre class="methodSignature">public&nbsp;<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configuration</a>&nbsp;getConf()</pre>
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+<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.hadoop.conf.Configuration)">AbstractFetchSchedule</a></span>&#8203;(<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configuration</a>&nbsp;conf)</code></th>
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+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
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index 71d9bf8e..b34ab823 100644
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-<title>CrawlDbMerger.Merger (apache-nutch 1.21 API)</title>
+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
+<title>CrawlDbMerger.Merger (apache-nutch 1.22 API)</title>
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-<meta name="dc.created" content="2025-07-16">
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+<pre class="methodSignature">public&nbsp;void&nbsp;setup&#8203;(<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Reducer.Context.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Reducer.Context</a>&nbsp;context)</pre>
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+<dd><code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Reducer.html?is-external=true#reduce-KEYIN-java.lang.Iterable-org.apache.hadoop.mapreduce.Reducer.Context-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">reduce</a></code>&nbsp;in class&nbsp;<code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Reducer.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class [...]
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 <!-- ======== END OF BOTTOM NAVBAR ======= -->
 </nav>
-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
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+<!-- Generated by javadoc (11.0.30) on Thu Feb 12 14:17:19 CET 2026 -->
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-<meta name="dc.created" content="2025-07-16">
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+<li><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configured.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">org.apache.hadoop.conf.Configured</a></li>
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+<dd><code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configurable.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configurable</a></code>, <code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/util/Tool.html?is-external=true" title="class or interface in org.apache.hadoop.util" class="externalLink">Tool</a></code></dd>
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 <hr>
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+extends <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configured.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configured</a>
+implements <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/util/Tool.html?is-external=true" title="class or interface in org.apache.hadoop.util" class="externalLink">Tool</a></pre>
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 <td class="colLast">&nbsp;</td>
 </tr>
 <tr class="rowColor">
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+<th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E(org.apache.hadoop.conf.Configuration)">CrawlDbMerger</a></span>&#8203;(<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/conf/Configuration.html?is-external=true" title="class or interface in org.apache.hadoop.conf" class="externalLink">Configuration</a>&nbsp;conf)</code></th>
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+<td class="colFirst"><code>static <a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Job.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Job</a></code></td>
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+<h3>Methods inherited from class&nbsp;org.apache.hadoop.mapreduce.<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Mapper</a></h3>
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+<pre class="methodSignature">public&nbsp;void&nbsp;setup&#8203;(<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.Context.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Mapper.Context</a>&nbsp;context)</pre>
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 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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+<dd><code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.html?is-external=true#setup-org.apache.hadoop.mapreduce.Mapper.Context-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">setup</a></code>&nbsp;in class&nbsp;<code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Mapper</a>&lt; [...]
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+<pre class="methodSignature">public&nbsp;void&nbsp;map&#8203;(<a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/io/Text.html?is-external=true" title="class or interface in org.apache.hadoop.io" class="externalLink">Text</a>&nbsp;key,
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 <dl>
 <dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
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+<dd><code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.html?is-external=true#map-KEYIN-VALUEIN-org.apache.hadoop.mapreduce.Mapper.Context-" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">map</a></code>&nbsp;in class&nbsp;<code><a href="https://hadoop.apache.org/docs/r3.4.2/api/org/apache/hadoop/mapreduce/Mapper.html?is-external=true" title="class or interface in org.apache.hadoop.mapreduce" class="externalLink">Mapp [...]
 <dt><span class="throwsLabel">Throws:</span></dt>
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@@ -366,7 +366,7 @@ extends <a href="https://hadoop.apache.org/docs/r3.3.6/api/org/apache/hadoop/map
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-<p class="legalCopy"><small>Copyright &copy; 2025 The Apache Software Foundation</small></p>
+<p class="legalCopy"><small>Copyright &copy; 2026 The Apache Software Foundation</small></p>
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diff --git a/content/documentation/javadoc/api/org/apache/nutch/crawl/CrawlDbReader.CrawlDbStatReducer.html b/content/documentation/javadoc/api/org/apache/nutch/crawl/CrawlDbReader.CrawlDbStatReducer.html
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