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https://issues.apache.org/jira/browse/HBASE-25626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17295961#comment-17295961
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Anoop Sam John commented on HBASE-25626:
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Pushed to branch-1 also
> Possible Resource Leak in HeterogeneousRegionCountCostFunction
> --------------------------------------------------------------
>
> Key: HBASE-25626
> URL: https://issues.apache.org/jira/browse/HBASE-25626
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0-alpha-1, 2.3.0, 1.6.0
> Reporter: Narges Shadab
> Assignee: Narges Shadab
> Priority: Major
> Fix For: 3.0.0-alpha-1, 1.7.0, 2.5.0, 2.3.5, 2.4.2
>
>
> We noticed a possible resource leak
> [here|https://github.com/apache/hbase/blob/b522d2a33e31fbe70c341ea7068428ada8d51bc0/hbase-server/src/main/java/org/apache/hadoop/hbase/master/balancer/HeterogeneousRegionCountCostFunction.java#L225].
> close() is called on {{reader}} at line 228 but if an I/O error occurs at
> line 225, {{reader}} remains open since the exception isn't caught locally.
> I'll submit a pull request to fix it.
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