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https://issues.apache.org/jira/browse/OAK-4861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Elemer Kisch updated OAK-4861:
------------------------------
Attachment: (was: si09ent-cqa-243-async-index-update.log)
> AsyncIndexUpdate consuming constantly 1 CPU core
> ------------------------------------------------
>
> Key: OAK-4861
> URL: https://issues.apache.org/jira/browse/OAK-4861
> Project: Jackrabbit Oak
> Issue Type: Improvement
> Affects Versions: 1.0.31
> Reporter: Jörg Hoh
>
> The AsyncIndexUpdate thread takes a long time on some of our environments to
> update the index for a few nodes:
> {noformat}
> 28.09.2016 18:23:49.405 *DEBUG* [pool-11-thread-1]
> org.apache.jackrabbit.oak.plugins.index.AsyncIndexUpdate AsyncIndex (async)
> update run completed in 3,369 min. Indexed 14 nodes
> {noformat}
> I set the log to DEBUG for investigation and during the time I saw constantly
> such times; this instance is a test instance and there was no activity from
> the outside during this time. I also can confirm such times from other
> environments.
> The immediately visible problem is that this instance (and others as well)
> constantly consume at least 1 CPU core, no matter what activity happens on
> the system. This only happens on the master node of our DocumentNodeStore
> clusters.
> I did a number of threaddumps during investigation and a common stacktrace
> for the AsyncIndexUpdate was like this:
> {noformat}
> 3XMTHREADINFO "pool-11-thread-1" J9VMThread:0x0000000001E69C00,
> j9thread_t:0x00007FFFBE101CB0, java/lang/Thread:0x00000001077FE938, state:R,
> prio=5
> 3XMJAVALTHREAD (java/lang/Thread getId:0x10A, isDaemon:false)
> 3XMTHREADINFO1 (native thread ID:0x3C781, native priority:0x5, native
> policy:UNKNOWN, vmstate:CW, vm thread flags:0x00000001)
> 3XMTHREADINFO2 (native stack address range from:0x00007FFFC696A000,
> to:0x00007FFFC69AB000, size:0x41000)
> 3XMCPUTIME CPU usage total: 992425.397213554 secs, current
> category="Application"
> 3XMHEAPALLOC Heap bytes allocated since last GC cycle=735893672 (0x2BDCD8A8)
> 3XMTHREADINFO3 Java callstack:
> 4XESTACKTRACE at
> com/google/common/collect/Lists.newArrayList(Lists.java:128(Compiled Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/OakDirectory$OakIndexFile.<init>(OakDirectory.java:255(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/OakDirectory$OakIndexFile.<init>(OakDirectory.java:201(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/OakDirectory$OakIndexInput.<init>(OakDirectory.java:400(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/OakDirectory$OakIndexInput.clone(OakDirectory.java:408(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/OakDirectory$OakIndexInput.clone(OakDirectory.java:384(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/store/Directory$SlicedIndexInput.clone(Directory.java:288(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/store/Directory$SlicedIndexInput.clone(Directory.java:269(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/codecs/BlockTreeTermsReader$FieldReader.<init>(BlockTreeTermsReader.java:481(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/codecs/BlockTreeTermsReader.<init>(BlockTreeTermsReader.java:176(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/codecs/lucene41/Lucene41PostingsFormat.fieldsProducer(Lucene41PostingsFormat.java:437(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/SegmentCoreReaders.<init>(SegmentCoreReaders.java:116(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/SegmentReader.<init>(SegmentReader.java:96(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/ReadersAndUpdates.getReader(ReadersAndUpdates.java:141(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/BufferedUpdatesStream.applyDeletesAndUpdates(BufferedUpdatesStream.java:279(Compiled
> Code))
> 5XESTACKTRACE (entered lock:
> org/apache/lucene/index/BufferedUpdatesStream@0x00000002245B4100, entry
> count: 1)
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.applyAllDeletesAndUpdates(IndexWriter.java:3191(Compiled
> Code))
> 5XESTACKTRACE (entered lock:
> org/apache/lucene/index/IndexWriter@0x00000002245B4050, entry count: 3)
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.maybeApplyDeletes(IndexWriter.java:3182(Compiled
> Code))
> 5XESTACKTRACE (entered lock:
> org/apache/lucene/index/IndexWriter@0x00000002245B4050, entry count: 2)
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.doFlush(IndexWriter.java:3155(Compiled
> Code))
> 5XESTACKTRACE (entered lock:
> org/apache/lucene/index/IndexWriter@0x00000002245B4050, entry count: 1)
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.flush(IndexWriter.java:3123(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.closeInternal(IndexWriter.java:988(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.close(IndexWriter.java:932(Compiled Code))
> 5XESTACKTRACE (entered lock: java/lang/Object@0x00000002245B9398, entry
> count: 1)
> 4XESTACKTRACE at
> org/apache/lucene/index/IndexWriter.close(IndexWriter.java:894(Compiled Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/LuceneIndexEditorContext.closeWriter(LuceneIndexEditorContext.java:235(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/lucene/LuceneIndexEditor.leave(LuceneIndexEditor.java:207(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/IndexUpdate.leave(IndexUpdate.java:250(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/spi/commit/VisibleEditor.leave(VisibleEditor.java:63(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/spi/commit/EditorDiff.process(EditorDiff.java:56(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/AsyncIndexUpdate.updateIndex(AsyncIndexUpdate.java:372(Compiled
> Code))
> 4XESTACKTRACE at
> org/apache/jackrabbit/oak/plugins/index/AsyncIndexUpdate.run(AsyncIndexUpdate.java:322(Compiled
> Code))
> 5XESTACKTRACE (entered lock:
> org/apache/jackrabbit/oak/plugins/index/AsyncIndexUpdate@0x000000010447CCF0,
> entry count: 1)
> 4XESTACKTRACE at
> org/apache/sling/commons/scheduler/impl/QuartzJobExecutor.execute(QuartzJobExecutor.java:115(Compiled
> Code))
> 4XESTACKTRACE at
> org/quartz/core/JobRunShell.run(JobRunShell.java:202(Compiled Code))
> 4XESTACKTRACE at
> java/util/concurrent/ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1157(Compiled
> Code))
> 4XESTACKTRACE at
> java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:627)
> 4XESTACKTRACE at java/lang/Thread.run(Thread.java:809)
> {noformat}
> I don't think, that we had such a behaviour a few months ago.
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