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https://issues.apache.org/jira/browse/HIVE-15068?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen O'Malley closed HIVE-15068.
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> Run ClearDanglingScratchDir periodically inside HS2
> ---------------------------------------------------
>
> Key: HIVE-15068
> URL: https://issues.apache.org/jira/browse/HIVE-15068
> Project: Hive
> Issue Type: Improvement
> Components: HiveServer2
> Reporter: Daniel Dai
> Assignee: Daniel Dai
> Labels: TODOC1.3, TODOC2.2
> Fix For: 1.3.0, 2.2.0
>
> Attachments: HIVE-15068.1.patch, HIVE-15068.2.patch,
> HIVE-15068.3.patch, HIVE-15068.4.branch-1.patch, HIVE-15068.4.patch
>
>
> In HIVE-13429, we introduce a tool which clear dangling scratch directory. In
> this ticket, we want to invoke the tool automatically on a Hive cluster.
> Options are:
> 1. cron job, which would involve manual cron job setup
> 2. As a metastore thread. However, it is possible we run metastore without
> hdfs in the future (eg, managing s3 files). ClearDanglingScratchDir needs
> support which only exists in hdfs, it won't work if the above scenario happens
> 3. As a HS2 thread. The downside is if no HS2 is running, the tool will not
> run automatically. But we expect HS2 will be a required component down the
> road
> Here I choose approach 3 in the implementation.
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