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https://issues.apache.org/jira/browse/HBASE-29239?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hernan Gelaf-Romer reassigned HBASE-29239:
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Assignee: Hernan Gelaf-Romer
> Subsequent runs of re-splitting HFiles can fail because we don't cleanup the
> MR directory
> -----------------------------------------------------------------------------------------
>
> Key: HBASE-29239
> URL: https://issues.apache.org/jira/browse/HBASE-29239
> Project: HBase
> Issue Type: Bug
> Components: backup&restore
> Reporter: Hernan Gelaf-Romer
> Assignee: Hernan Gelaf-Romer
> Priority: Major
>
> Recently, I've discovered that it's possible to break backups if the
> MapReduceHFileSplitterJob fail to run successfully.
>
> The MR job first populates the target directory, but fails at some other
> point. When re-tried, the MR fails because the target directory already
> exists. We should clean up the target bulkload directory if the HFileSplitter
> job fails for any reason to avoid this failure mode
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