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Posted to dev@lucene.apache.org by "Grant Ingersoll (Commented) (JIRA)" <ji...@apache.org> on 2011/12/06 22:01:42 UTC
[jira] [Commented] (SOLR-1730) Solr fails to start if
QueryElevationComponent config is missing
[ https://issues.apache.org/jira/browse/SOLR-1730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13163834#comment-13163834 ]
Grant Ingersoll commented on SOLR-1730:
---------------------------------------
If I move elevate.xml out of example/solr/conf, I get:
{quote}
Dec 6, 2011 3:59:17 PM org.apache.solr.common.SolrException log
SEVERE: java.lang.NullPointerException
at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:167)
at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:1474)
at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:59)
at org.apache.solr.core.SolrCore$3.call(SolrCore.java:1251)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:680)
{quote}
But I don't see the exception in the QEC that should be thrown by line 191. If I setup a test locally using the solrconfig-elevate.xml, then I can get the Solr exception.
> Solr fails to start if QueryElevationComponent config is missing
> ----------------------------------------------------------------
>
> Key: SOLR-1730
> URL: https://issues.apache.org/jira/browse/SOLR-1730
> Project: Solr
> Issue Type: Bug
> Components: SearchComponents - other
> Affects Versions: 1.4
> Reporter: Mark Miller
> Assignee: Grant Ingersoll
> Labels: newdev
> Fix For: 3.6, 4.0
>
>
> QueryElevationComponent tries to do preload some data if its config file does not exist:
> {code}
> if (!exists){
> // preload the first data
> RefCounted<SolrIndexSearcher> searchHolder = null;
> try {
> searchHolder = core.getNewestSearcher(false);
> IndexReader reader = searchHolder.get().getReader();
> getElevationMap( reader, core );
> } finally {
> if (searchHolder != null) searchHolder.decref();
> }
> }
> {code}
> This does not work though, as asking for the newest searcher causes a request to be submitted to Solr before its ready to handle it:
> {code}
> [java] SEVERE: java.lang.NullPointerException
> [java] at org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:173)
> [java] at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:131)
> [java] at org.apache.solr.core.SolrCore.execute(SolrCore.java:1317)
> [java] at org.apache.solr.core.QuerySenderListener.newSearcher(QuerySenderListener.java:52)
> [java] at org.apache.solr.core.SolrCore$3.call(SolrCore.java:1147)
> [java] at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
> [java] at java.util.concurrent.FutureTask.run(FutureTask.java:138)
> {code}
> The SearchHandler has not yet been core informed (as the QueryElevationComponent causes this as its getting core informed right before the SearchHandler) and so its components arraylist is still null.
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