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Posted to commits@lucene.apache.org by ho...@apache.org on 2014/04/02 19:26:39 UTC

svn commit: r1584099 - in /lucene/dev/branches/branch_4x: ./ dev-tools/ lucene/ lucene/analysis/ lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/ lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/ lucene...

Author: hossman
Date: Wed Apr  2 17:26:37 2014
New Revision: 1584099

URL: http://svn.apache.org/r1584099
Log:
SOLR-5795: harden leader check to log cleanly (no NPE) in transient situations when there is no leader due to election in progress (merge r1584097)

Modified:
    lucene/dev/branches/branch_4x/   (props changed)
    lucene/dev/branches/branch_4x/dev-tools/   (props changed)
    lucene/dev/branches/branch_4x/lucene/   (props changed)
    lucene/dev/branches/branch_4x/lucene/BUILD.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/JRE_VERSION_MIGRATION.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/LICENSE.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/MIGRATE.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/NOTICE.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/README.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/SYSTEM_REQUIREMENTS.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/miscellaneous/Lucene47WordDelimiterFilter.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/ASCIITLD.jflex-macro   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/SUPPLEMENTARY.jflex-macro   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/StandardTokenizerImpl40.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/StandardTokenizerImpl40.jflex   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/UAX29URLEmailTokenizerImpl40.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/UAX29URLEmailTokenizerImpl40.jflex   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/java/org/apache/lucene/analysis/standard/std40/package.html   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/common/src/test/org/apache/lucene/analysis/miscellaneous/TestLucene47WordDelimiterFilter.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/analysis/icu/src/java/org/apache/lucene/collation/ICUCollationKeyFilterFactory.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/backwards/   (props changed)
    lucene/dev/branches/branch_4x/lucene/benchmark/   (props changed)
    lucene/dev/branches/branch_4x/lucene/build.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/classification/   (props changed)
    lucene/dev/branches/branch_4x/lucene/classification/build.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/classification/ivy.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/classification/src/   (props changed)
    lucene/dev/branches/branch_4x/lucene/codecs/   (props changed)
    lucene/dev/branches/branch_4x/lucene/common-build.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/index/TestBackwardsCompatibility.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/index/index.40.cfs.zip   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/index/index.40.nocfs.zip   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/index/index.40.optimized.cfs.zip   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/index/index.40.optimized.nocfs.zip   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/search/TestSort.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/search/TestSortDocValues.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/search/TestSortRandom.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/search/TestTopFieldCollector.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/core/src/test/org/apache/lucene/search/TestTotalHitCountCollector.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/demo/   (props changed)
    lucene/dev/branches/branch_4x/lucene/expressions/   (props changed)
    lucene/dev/branches/branch_4x/lucene/facet/   (props changed)
    lucene/dev/branches/branch_4x/lucene/grouping/   (props changed)
    lucene/dev/branches/branch_4x/lucene/highlighter/   (props changed)
    lucene/dev/branches/branch_4x/lucene/ivy-settings.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/ivy-versions.properties   (props changed)
    lucene/dev/branches/branch_4x/lucene/join/   (props changed)
    lucene/dev/branches/branch_4x/lucene/licenses/   (props changed)
    lucene/dev/branches/branch_4x/lucene/memory/   (props changed)
    lucene/dev/branches/branch_4x/lucene/misc/   (props changed)
    lucene/dev/branches/branch_4x/lucene/module-build.xml   (props changed)
    lucene/dev/branches/branch_4x/lucene/queries/   (props changed)
    lucene/dev/branches/branch_4x/lucene/queries/src/test/org/apache/lucene/queries/function/TestFunctionQuerySort.java   (props changed)
    lucene/dev/branches/branch_4x/lucene/queryparser/   (props changed)
    lucene/dev/branches/branch_4x/lucene/replicator/   (props changed)
    lucene/dev/branches/branch_4x/lucene/sandbox/   (props changed)
    lucene/dev/branches/branch_4x/lucene/site/   (props changed)
    lucene/dev/branches/branch_4x/lucene/spatial/   (props changed)
    lucene/dev/branches/branch_4x/lucene/spatial/src/test-files/data/simple-bbox.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/spatial/src/test-files/simple-Queries-BBox.txt   (props changed)
    lucene/dev/branches/branch_4x/lucene/suggest/   (props changed)
    lucene/dev/branches/branch_4x/lucene/test-framework/   (props changed)
    lucene/dev/branches/branch_4x/lucene/tools/   (props changed)
    lucene/dev/branches/branch_4x/solr/   (props changed)
    lucene/dev/branches/branch_4x/solr/CHANGES.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/LICENSE.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/NOTICE.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/README.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/SYSTEM_REQUIREMENTS.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/build.xml   (props changed)
    lucene/dev/branches/branch_4x/solr/cloud-dev/   (props changed)
    lucene/dev/branches/branch_4x/solr/common-build.xml   (props changed)
    lucene/dev/branches/branch_4x/solr/contrib/   (props changed)
    lucene/dev/branches/branch_4x/solr/core/   (props changed)
    lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/update/processor/DocExpirationUpdateProcessorFactory.java
    lucene/dev/branches/branch_4x/solr/core/src/test/org/apache/solr/core/TestConfig.java   (props changed)
    lucene/dev/branches/branch_4x/solr/example/   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpclient-LICENSE-ASL.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpclient-NOTICE.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpcore-LICENSE-ASL.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpcore-NOTICE.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpmime-LICENSE-ASL.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/licenses/httpmime-NOTICE.txt   (props changed)
    lucene/dev/branches/branch_4x/solr/scripts/   (props changed)
    lucene/dev/branches/branch_4x/solr/site/   (props changed)
    lucene/dev/branches/branch_4x/solr/solrj/   (props changed)
    lucene/dev/branches/branch_4x/solr/test-framework/   (props changed)
    lucene/dev/branches/branch_4x/solr/webapp/   (props changed)

Modified: lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/update/processor/DocExpirationUpdateProcessorFactory.java
URL: http://svn.apache.org/viewvc/lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/update/processor/DocExpirationUpdateProcessorFactory.java?rev=1584099&r1=1584098&r2=1584099&view=diff
==============================================================================
--- lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/update/processor/DocExpirationUpdateProcessorFactory.java (original)
+++ lucene/dev/branches/branch_4x/solr/core/src/java/org/apache/solr/update/processor/DocExpirationUpdateProcessorFactory.java Wed Apr  2 17:26:37 2014
@@ -23,7 +23,7 @@ import org.apache.solr.common.SolrExcept
 import static org.apache.solr.common.SolrException.ErrorCode.*;
 import org.apache.solr.common.util.NamedList;
 import org.apache.solr.common.SolrInputDocument;
-import org.apache.solr.common.cloud.Slice;
+import org.apache.solr.common.cloud.Replica;
 import org.apache.solr.common.cloud.Slice;
 
 import org.apache.solr.core.CloseHook;
@@ -469,7 +469,17 @@ public final class DocExpirationUpdatePr
 
     List<Slice> slices = new ArrayList<Slice>(zk.getClusterState().getActiveSlices(col));
     Collections.sort(slices, COMPARE_SLICES_BY_NAME);
-    String leaderInCharge = slices.get(0).getLeader().getName();
+    if (slices.isEmpty()) {
+      log.error("Collection {} has no active Slices?", col);
+      return false;
+    }
+    Replica firstSliceLeader = slices.get(0).getLeader();
+    if (null == firstSliceLeader) {
+      log.warn("Slice in charge of periodic deletes for {} does not currently have a leader",
+               col);
+      return false;
+    }
+    String leaderInCharge = firstSliceLeader.getName();
     String myCoreNodeName = desc.getCoreNodeName();
     
     boolean inChargeOfDeletesRightNow = leaderInCharge.equals(myCoreNodeName);