Issue

AEM is running out of memory and crashing due to long running searches. Thread dumps show threads similar to the one below:

"192.168.1.50 [1488891244417] GET /content/geometrixx/en.html HTTP/1.1" #125856 prio=5 os_prio=0 tid=0x00007f32fd3e7800 nid=0x4eb9 runnable [0x00007f3287b64000]
java.lang.Thread.State: RUNNABLE
at java.lang.System.identityHashCode(Native Method)
at org.apache.lucene.index.IndexReader.hashCode(IndexReader.java:290)
at java.util.WeakHashMap.hash(WeakHashMap.java:298)
at java.util.WeakHashMap.put(WeakHashMap.java:449)
at java.util.Collections$SetFromMap.add(Collections.java:5461)
at java.util.Collections$SynchronizedCollection.add(Collections.java:2035)
- locked <0x000000031c1174e8> (a java.util.Collections$SynchronizedSet)
at org.apache.lucene.index.IndexReader.registerParentReader(IndexReader.java:128)
at org.apache.lucene.index.FilterAtomicReader.<init>(FilterAtomicReader.java:334)
at org.apache.lucene.search.highlight.WeightedSpanTermExtractor$DelegatingAtomicReader.<init>(WeightedSpanTermExtractor.java:378)
at org.apache.lucene.search.highlight.WeightedSpanTermExtractor.getLeafContext(WeightedSpanTermExtractor.java:364)
at org.apache.lucene.search.highlight.WeightedSpanTermExtractor.extract(WeightedSpanTermExtractor.java:216)
at org.apache.lucene.search.highlight.WeightedSpanTermExtractor.extract(WeightedSpanTermExtractor.java:99)
at org.apache.lucene.search.highlight.WeightedSpanTermExtractor.getWeightedSpanTerms(WeightedSpanTermExtractor.java:474)
at org.apache.lucene.search.highlight.QueryScorer.initExtractor(QueryScorer.java:217)
at org.apache.lucene.search.highlight.QueryScorer.init(QueryScorer.java:186)
at org.apache.lucene.search.highlight.Highlighter.getBestTextFragments(Highlighter.java:197)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex.getExcerpt(LuceneIndex.java:496)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex.access$300(LuceneIndex.java:152)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.loadDocs(LuceneIndex.java:369)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.computeNext(LuceneIndex.java:293)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$1.computeNext(LuceneIndex.java:283)
at com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143)
at com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$LucenePathCursor$1.hasNext(LuceneIndex.java:1116)
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:205)
at org.apache.jackrabbit.oak.plugins.index.lucene.LuceneIndex$LucenePathCursor.hasNext(LuceneIndex.java:1137)
at org.apache.jackrabbit.oak.plugins.index.aggregate.AggregationCursor.fetchNext(AggregationCursor.java:89)
at org.apache.jackrabbit.oak.plugins.index.aggregate.AggregationCursor.hasNext(AggregationCursor.java:76)
at org.apache.jackrabbit.oak.spi.query.Cursors$IntersectionCursor.fetchNext(Cursors.java:402)
at org.apache.jackrabbit.oak.spi.query.Cursors$IntersectionCursor.hasNext(Cursors.java:394)
at org.apache.jackrabbit.oak.spi.query.Cursors$IntersectionCursor.fetchNext(Cursors.java:402)
at org.apache.jackrabbit.oak.spi.query.Cursors$IntersectionCursor.hasNext(Cursors.java:394)
at org.apache.jackrabbit.oak.query.ast.SelectorImpl.next(SelectorImpl.java:407)
at org.apache.jackrabbit.oak.query.QueryImpl$RowIterator.fetchNext(QueryImpl.java:773)
at org.apache.jackrabbit.oak.query.QueryImpl$RowIterator.hasNext(QueryImpl.java:798)
at com.google.common.collect.Iterators$5.hasNext(Iterators.java:542)
at org.apache.jackrabbit.oak.query.FilterIterators$DistinctIterator.fetchNext(FilterIterators.java:137)
at org.apache.jackrabbit.oak.query.FilterIterators$DistinctIterator.hasNext(FilterIterators.java:151)
at org.apache.jackrabbit.oak.jcr.query.QueryResultImpl$1.fetch(QueryResultImpl.java:108)
at org.apache.jackrabbit.oak.jcr.query.QueryResultImpl$1.<init>(QueryResultImpl.java:104)
at org.apache.jackrabbit.oak.jcr.query.QueryResultImpl.getRows(QueryResultImpl.java:91)
at com.day.cq.search.impl.builder.QueryImpl.execute(QueryImpl.java:475)
at com.day.cq.search.impl.builder.QueryImpl.getResult(QueryImpl.java:106)
at com.day.cq.search.impl.SimpleSearchImpl.getResult(SimpleSearchImpl.java:179)
at com.day.cq.wcm.foundation.Search.getResult(Search.java:219)

Environment

AEM 6.0 and 6.1

Cause

Known limitation with the older style of fulltext lucene index in AEM6.0 and 6.1.

Resolution

Upgrade to AEM6.2 or later version to avoid this issue.

تم ترخيص هذا العمل بموجب الترخيص العام غير المعدل الخاص بالإسناد وعدم التجارة والمشاركة الإصدار 3.0 ‏من ‏‏Creative Commons‏‏  إن بنود Creative Commons لا تشمل منشورات Twitter™‎ وFacebook.

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