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https://issues.apache.org/jira/browse/HBASE-15101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15106464#comment-15106464
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ramkrishna.s.vasudevan commented on HBASE-15101:
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Can you try coming up with a test case to see this problem is reproducible as
an FT. Try to start 2 region servers and after some data insertion ensure there
is a major compaction and count the number of files after the compacted
discharger chore runs.
Also in your experimental set up are you seeing that none of the compacted
files are are getting finalized or few of them are getting finalized and few
are getting missed out? If nothing is getting finalized then it would be great
to check the status of those files in by adding some debug logs in
HStore.closeAndArchiveStoreFiles() (the method name am not very sure but
something like this was added which does the finalization part).
> Leaked References to StoreFile.Reader after HBASE-13082
> -------------------------------------------------------
>
> Key: HBASE-15101
> URL: https://issues.apache.org/jira/browse/HBASE-15101
> Project: HBase
> Issue Type: Bug
> Components: HFile, io
> Affects Versions: 2.0.0
> Reporter: deepankar
> Assignee: deepankar
> Attachments: HBASE-15101-v1.patch, HBASE-15101-v2.patch,
> HBASE-15101-v3.patch, HBASE-15101.patch
>
>
> We observed this production that after a region server dies there are huge
> number of hfiles in that region for the region server running the version
> with HBASE-13082, In the doc it is given that it is expected to happen, but
> we found a one place where scanners are not being closed. If the scanners are
> not closed their references are not decremented and that is leading to the
> issue of huge number of store files not being finalized
> All I was able to find is in the selectScannersFrom, where we discard some of
> the scanners and we are not closing them. I am attaching a patch for that.
> Also to avoid these issues should the files that are done be logged and
> finalized (moved to archive) as a part of region close operation. This will
> solve any leaks that can happen and does not cause any dire consequences?
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