mazhenlin created HBASE-21342:
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Summary: FileSystem in use was closed by others in secure bulkLoad
Key: HBASE-21342
URL: https://issues.apache.org/jira/browse/HBASE-21342
Project: HBase
Issue Type: Bug
Affects Versions: 1.2.7, 2.0.1, 1.4.4, 2.1.0, 3.0.0, 1.5.0, 1.3.3
Reporter: mazhenlin
Attachments: race.patch
As mentioned in [#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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