Jörg Hoh created OAK-4861:
-----------------------------
Summary: 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
