[
https://issues.apache.org/jira/browse/SOLR-3790?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448798#comment-13448798
]
Koji Sekiguchi commented on SOLR-3790:
--------------------------------------
Hmm, this is not good. I think storedHighlightFieldNames in SolrIndexSearcher
could be initialized twice in getStoredHighlightFieldNames() method:
{code}
public Collection<String> getStoredHighlightFieldNames() {
if (storedHighlightFieldNames == null) {
storedHighlightFieldNames = new LinkedList<String>();
for (String fieldName : fieldNames) {
try {
SchemaField field = schema.getField(fieldName);
if (field.stored() &&
((field.getType() instanceof
org.apache.solr.schema.TextField) ||
(field.getType() instanceof
org.apache.solr.schema.StrField))) {
storedHighlightFieldNames.add(fieldName);
}
} catch (RuntimeException e) { // getField() throws a SolrException,
but it arrives as a RuntimeException
log.warn("Field \"" + fieldName + "\" found in index, but not
defined in schema.");
}
}
}
return storedHighlightFieldNames;
}
{code}
I think the initialization block should go to constructor. Meanwhile, Aoki-san,
you can avoid the bug by specifying the explicit field names for hl.fl
parameter instead of using "*".
> NullPointerException and ConcurrentModificationException are thrown when
> searching with highlighter
> ---------------------------------------------------------------------------------------------------
>
> Key: SOLR-3790
> URL: https://issues.apache.org/jira/browse/SOLR-3790
> Project: Solr
> Issue Type: Bug
> Components: highlighter
> Affects Versions: 3.5
> Environment: Ubuntu 12.04, Solr 3.5
> Reporter: shou aoki
>
> Hi, Im using Solr 3.5.
> I found strange phenomenon in solr log.
> This phenomenon has two exceptions that NullPointerException and
> ConcurrentModificationException.
> These exceptions are thrown by discrete threads.
> I think, The same two queries thrown at same time because error log recorded
> at same time. But I can't reproduce it.
> Does anyone have the same phenomenon?
> {code}
> 2012-08-21 00:07:49,868 [qtp979682126-953] INFO SolrCore - [c3] webapp=/solr
> path=/select
> params={hl.tag.post=[%02]&sort=score+desc&hl.tag.pre=[%01]&hl.fl=*&wt=javabin&hl=true&defType=normalizeQParser&rows=40&version=2&fl=score,*&hl.useFastVectorHighlighter=true&start=0&q=hoge&fq=((ap.l:"771")+AND+(*:*))}
> hits=4 status=500 QTime=164
> 2012-08-21 00:07:49,868 [qtp979682126-938] INFO SolrCore - [c3] webapp=/solr
> path=/select
> params={hl.tag.post=[%02]&sort=score+desc&hl.tag.pre=[%01]&hl.fl=*&wt=javabin&hl=true&defType=normalizeQParser&rows=12&version=2&fl=score,*&hl.useFastVectorHighlighter=true&start=0&q=hoge&fq=((ap.l:"771")+AND+(*:*))}
> hits=4 status=500 QTime=1094
> 2012-08-21 00:07:49,873 [qtp979682126-953] ERROR SolrDispatchFilter -
> java.util.ConcurrentModificationException
> at
> java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:778)
> at java.util.LinkedList$ListItr.next(LinkedList.java:713)
> at
> org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:106)
> at
> org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259)
> at
> org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478)
> at
> org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
> at org.eclipse.jetty.server.Server.handle(Server.java:350)
> at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442)
> at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801)
> at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224)
> at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
> at java.lang.Thread.run(Thread.java:679)
> 2012-08-21 00:07:49,873 [qtp979682126-938] ERROR SolrDispatchFilter -
> java.lang.NullPointerException
> at
> org.apache.solr.highlight.SolrHighlighter.getHighlightFields(SolrHighlighter.java:107)
> at
> org.apache.solr.util.SolrPluginUtils.optimizePreFetchDocs(SolrPluginUtils.java:259)
> at
> org.apache.solr.handler.component.QueryComponent.doPrefetch(QueryComponent.java:478)
> at
> org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:385)
> at
> org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:194)
> at
> org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:129)
> at org.apache.solr.core.SolrCore.execute(SolrCore.java:1372)
> at
> org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:356)
> at
> org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:252)
> at
> org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1337)
> at
> org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:486)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:119)
> at
> org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:520)
> at
> org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:233)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:973)
> at
> org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:417)
> at
> org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:192)
> at
> org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:907)
> at
> org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:117)
> at
> org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:250)
> at
> org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:110)
> at org.eclipse.jetty.server.Server.handle(Server.java:350)
> at
> org.eclipse.jetty.server.HttpConnection.handleRequest(HttpConnection.java:442)
> at
> org.eclipse.jetty.server.HttpConnection$RequestHandler.content(HttpConnection.java:941)
> at org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:801)
> at
> org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:224)
> at
> org.eclipse.jetty.server.AsyncHttpConnection.handle(AsyncHttpConnection.java:51)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint.handle(SelectChannelEndPoint.java:586)
> at
> org.eclipse.jetty.io.nio.SelectChannelEndPoint$1.run(SelectChannelEndPoint.java:44)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:598)
> at
> org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:533)
> at java.lang.Thread.run(Thread.java:679)
> {code}
> This is rarely accident? These are discrete bug?
> See: Similar phenomenon
> http://lucene.472066.n3.nabble.com/Null-Pointer-Exception-in-SOLR-td3954952.html
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