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Posted to oak-issues@jackrabbit.apache.org by "Chetan Mehrotra (JIRA)" <ji...@apache.org> on 2017/07/27 07:41:00 UTC
[jira] [Created] (OAK-6500) NRTIndex leaks file handles due to
unclosed IndexReader
Chetan Mehrotra created OAK-6500:
------------------------------------
Summary: NRTIndex leaks file handles due to unclosed IndexReader
Key: OAK-6500
URL: https://issues.apache.org/jira/browse/OAK-6500
Project: Jackrabbit Oak
Issue Type: Bug
Components: lucene
Affects Versions: 1.6.0
Reporter: Chetan Mehrotra
Assignee: Chetan Mehrotra
Priority: Critical
Fix For: 1.8, 1.7.5, 1.6.4
On some setups under stress it has been seen that NRTIndex leaks file handles over time.
Checking with lsof indicates that more than 3 nrt folders per index are being used. However per design there can be max 3 and after system is not in use max 1 should be present.
{noformat}
$ lsof -p 9550 | grep '/nrt' | gawk 'match($0, /.*crx-quickstart\/repository\/index\/(.*?)\/\_.*$/, m) { print m[1]; }' | sort | uniq
cqPageLucene-1501065263331/nrt1501065335930
cqPageLucene-1501065263331/nrt1501065374667
cqPageLucene-1501065263331/nrt1501065392492
cqPageLucene-1501065263331/nrt1501065440955
cqPageLucene-1501065263331/nrt1501065473286
cqPageLucene-1501065263331/nrt1501065507345
slingeventJob-1501065263330/nrt1501065356975
slingeventJob-1501065263330/nrt1501065373229
slingeventJob-1501065263330/nrt1501065394142
slingeventJob-1501065263330/nrt1501065440953
slingeventJob-1501065263330/nrt1501065473282
slingeventJob-1501065263330/nrt1501065507342
versionStoreIndex-1501065263332/nrt1501065335925
versionStoreIndex-1501065263332/nrt1501065366781
versionStoreIndex-1501065263332/nrt1501065392490
versionStoreIndex-1501065263332/nrt1501065441232
versionStoreIndex-1501065263332/nrt1501065473285
{noformat}
Further actually checking index folder indicates that those folder are actually deleted. So some where the file handle is still referring them.
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