[PR] HBASE-30154: Fix hlink missing backreference causing dataloss [hbase]

["shrinidhi-arista (via GitHub)" <gi...@apache.org>]

shrinidhi-arista opened a new pull request, #8232:
URL: https://github.com/apache/hbase/pull/8232

   Fix includes -
   
   - RestoreSnapshotHelper: write a back-reference to the archive when creating an
     HFileLink Reference file, so HFileLinkCleaner knows the archived HFile is still live.
     
     Added test TestCloneSnapshotFromClientAfterMergingRegion which fails with FileNotFound
     exception while checking if all the hfiles referenced by cloned table are available. Disabling and
     enabling the table also causes the test to hang because of master retrying indefinitely. The test
     passes with the fix.
   
   - HFileLinkCleaner: when evaluating a back-reference, also check for HFileLink Reference
     files (glob <hfileLinkName>.*) in the link directory — these are created by
     restoreReferenceFile() and protect the archived HFile even when no zero-byte HFileLink
     file exists alongside them.
     
     Added testHFileLinkReferenceFileProtectsArchivedHFile() which fails while asserting that Hfile
     is not cleaned up but passes with the fix.


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Re: [PR] HBASE-30154: Fix hlink missing backreference causing dataloss [hbase]

["shrinidhi-arista (via GitHub)" <gi...@apache.org>]

shrinidhi-arista closed pull request #8232: HBASE-30154: Fix hlink missing backreference causing dataloss
URL: https://github.com/apache/hbase/pull/8232


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