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https://issues.apache.org/jira/browse/HBASE-12547?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15090351#comment-15090351
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Ted Yu commented on HBASE-12547:
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We need some mechanism to track the expiration of leases.
Zookeeper is not favored as we're moving away from using zookeeper.
> Adopt server side cleanup for bulk load staging directories
> -----------------------------------------------------------
>
> Key: HBASE-12547
> URL: https://issues.apache.org/jira/browse/HBASE-12547
> Project: HBase
> Issue Type: Improvement
> Reporter: Ted Yu
> Labels: bulkloader
>
> Currently we rely on the client to send the clean up request for bulk load
> staging directories.
> In discussion of HBASE-12533, Enis and I raised similar comment about
> cleaning up bulk load staging directories from server side.
> We can keep lease on staging directory for bulk load operation. The default
> lease period should be long enough. After the lease expires, the underlying
> staging directory would be cleaned.
> This increases the robustness of bulk load process.
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