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Posted to oak-issues@jackrabbit.apache.org by "Alex Parvulescu (JIRA)" <ji...@apache.org> on 2015/05/30 11:39:17 UTC
[jira] [Created] (OAK-2934) Certain searches cause lucene index to
hit OutOfMemoryError
Alex Parvulescu created OAK-2934:
------------------------------------
Summary: Certain searches cause lucene index to hit OutOfMemoryError
Key: OAK-2934
URL: https://issues.apache.org/jira/browse/OAK-2934
Project: Jackrabbit Oak
Issue Type: Bug
Components: lucene
Reporter: Alex Parvulescu
Assignee: Alex Parvulescu
Certain search terms can get split into very small wildcard tokens that will match a huge amount of items from the index, finally resulting in a OOME.
For example
{code}
/jcr:root//*[jcr:contains(., 'U=1*')]
{code}
will translate into the following lucene query
{code}
:fulltext:"u ( [set of all index terms stating with '1'] )"
{code}
this will break down when lucene will try to compute the score for the huge set of tokens:
{code}
java.lang.OutOfMemoryError: Java heap space
at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexFile.<init>(OakDirectory.java:201)
at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexFile.<init>(OakDirectory.java:155)
at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexInput.<init>(OakDirectory.java:340)
at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexInput.clone(OakDirectory.java:345)
at org.apache.jackrabbit.oak.plugins.index.lucene.OakDirectory$OakIndexInput.clone(OakDirectory.java:329)
at org.apache.lucene.codecs.lucene41.Lucene41PostingsReader$BlockDocsAndPositionsEnum.<init>(Lucene41PostingsReader.java:613)
at org.apache.lucene.codecs.lucene41.Lucene41PostingsReader.docsAndPositions(Lucene41PostingsReader.java:252)
at org.apache.lucene.codecs.BlockTreeTermsReader$FieldReader$SegmentTermsEnum.docsAndPositions(BlockTreeTermsReader.java:2233)
at org.apache.lucene.search.UnionDocsAndPositionsEnum.<init>(MultiPhraseQuery.java:492)
at org.apache.lucene.search.MultiPhraseQuery$MultiPhraseWeight.scorer(MultiPhraseQuery.java:205)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:618)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:491)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:448)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:281)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:269)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.loadDocs(LuceneIndex.java:352)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.computeNext(LuceneIndex.java:289)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.computeNext(LuceneIndex.java:280)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$LucenePathCursor$1.hasNext(LuceneIndex.java:1026)
at com.google.common.collect.Iterators$7.computeNext(Iterators.java:645)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.apache.jackrabbit.oak.spi.query.Cursors$PathCursor.hasNext(Cursors.java:198)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$LucenePathCursor.hasNext(LuceneIndex.java:1047)
at org.apache.jackrabbit.oak.plugins.index.aggregate.AggregationCursor.fetchNext(AggregationCursor.java:88)
at org.apache.jackrabbit.oak.plugins.index.aggregate.AggregationCursor.hasNext(AggregationCursor.java:75)
at org.apache.jackrabbit.oak.spi.query.Cursors$ConcatCursor.fetchNext(Cursors.java:474)
at org.apache.jackrabbit.oak.spi.query.Cursors$ConcatCursor.hasNext(Cursors.java:466)
at org.apache.jackrabbit.oak.spi.query.Cursors$ConcatCursor.fetchNext(Cursors.java:474)
at org.apache.jackrabbit.oak.spi.query.Cursors$ConcatCursor.hasNext(Cursors.java:466)
{code}
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