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https://issues.apache.org/jira/browse/HIVE-12418?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15086171#comment-15086171
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Aihua Xu commented on HIVE-12418:
---------------------------------
finalize() is not guaranteed to run. Maybe that's why sometimes it works and
sometime it doesn't. I think it doesn't hurt to override finalize(), but I
agree that somewhere we didn't call close() of RecordReader. I went through the
code, but RecordReader was used in many places. I didn't see places that we
forgot to call close().
> HiveHBaseTableInputFormat.getRecordReader() causes Zookeeper connection leak.
> -----------------------------------------------------------------------------
>
> Key: HIVE-12418
> URL: https://issues.apache.org/jira/browse/HIVE-12418
> Project: Hive
> Issue Type: Bug
> Components: HiveServer2
> Affects Versions: 1.1.0
> Reporter: Naveen Gangam
> Assignee: Naveen Gangam
> Fix For: 2.0.0
>
> Attachments: HIVE-12418.patch
>
>
> @Override
> public RecordReader<ImmutableBytesWritable, ResultWritable> getRecordReader(
> ...
> ...
> setHTable(HiveHBaseInputFormatUtil.getTable(jobConf));
> ...
> The HiveHBaseInputFormatUtil.getTable() creates new ZooKeeper
> connections(when HTable instance is created) which are never closed.
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