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Date: Wed, 20 Jan 2016 05:33:39 +0000 (UTC)
From: "ramkrishna.s.vasudevan (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12929973.1452723158000.154921.1453268019935@Atlassian.JIRA>
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Subject: [jira] [Commented] (HBASE-15101) Leaked References to
 StoreFile.Reader after HBASE-13082
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    [ https://issues.apache.org/jira/browse/HBASE-15101?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15108038#comment-15108038 ] 

ramkrishna.s.vasudevan commented on HBASE-15101:
------------------------------------------------

bq.. I added it to all places where we are returning the NO_MORE_VALUES, is there any other place I am missing ?
I only missed it. Its fine now. I can commit this. +1

> 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
>            Priority: Critical
>         Attachments: HBASE-15101-v1.patch, HBASE-15101-v2.patch, HBASE-15101-v3.patch, HBASE-15101-v4.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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