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https://issues.apache.org/jira/browse/HBASE-21342?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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mazhenlin reassigned HBASE-21342:
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Assignee: mazhenlin
> FileSystem in use may get closed by other bulk load call in secure bulkLoad
> ----------------------------------------------------------------------------
>
> Key: HBASE-21342
> URL: https://issues.apache.org/jira/browse/HBASE-21342
> Project: HBase
> Issue Type: Bug
> Affects Versions: 3.0.0, 2.1.0, 1.5.0, 1.3.3, 1.4.4, 2.0.1, 1.2.7
> Reporter: mazhenlin
> Assignee: mazhenlin
> Priority: Major
> Attachments: race.patch
>
>
> As mentioned in
> [[HBASE-15291|https://issues.apache.org/jira/browse/HBASE-15291]|#HBASE-15291],
> there is a race condition. If Two secure bulkload calls from the same UGI
> into two different regions and one region finishes earlier, it will close the
> bulk load fs, and the other region will fail.
>
> Another case would be more serious. The FileSystem.close() function need two
> synchronized variables : CACHE and deleteOnExit. If one region calls
> FileSystem.closeAllForUGI ( in SecureBulkLoadManager.cleanupBulkLoad) while
> another region is trying to close srcFS ( in
> SecureBulkLoadListener.closeSrcFs) , can cause deadlock here.
>
> I have wrote a UT for this and fixed it using reference counter.
>
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