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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 updated HBASE-21342:
------------------------------
Description:
As mentioned in [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 needs 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.
was:
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.
> 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|#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 needs 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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