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https://issues.apache.org/jira/browse/HBASE-13877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14579852#comment-14579852
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Enis Soztutar commented on HBASE-13877:
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bq. So I think it is the caller's duty to abort the regionserver? If we abort
the server inside Region.flush, do we still need to throw
DroppedSnapshotException out?
Yes, the DroppedSnapshotException has that contract. i've added extra abort()
statement to safeguard against cases where the caller does not handle this
exception explicitly.
> Interrupt to flush from TableFlushProcedure causes dataloss in ITBLL
> --------------------------------------------------------------------
>
> Key: HBASE-13877
> URL: https://issues.apache.org/jira/browse/HBASE-13877
> Project: HBase
> Issue Type: Bug
> Reporter: Enis Soztutar
> Assignee: Enis Soztutar
> Priority: Blocker
> Fix For: 2.0.0, 1.2.0, 1.1.1
>
> Attachments: hbase-13877_v1.patch, hbase-13877_v2-branch-1.1.patch
>
>
> ITBLL with 1.25B rows failed for me (and Stack as reported in
> https://issues.apache.org/jira/browse/HBASE-13811?focusedCommentId=14577834&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-14577834)
>
> HBASE-13811 and HBASE-13853 fixed an issue with WAL edit filtering.
> The root cause this time seems to be different. It is due to procedure based
> flush interrupting the flush request in case the procedure is cancelled from
> an exception elsewhere. This leaves the memstore snapshot intact without
> aborting the server. The next flush, then flushes the previous memstore with
> the current seqId (as opposed to seqId from the memstore snapshot). This
> creates an hfile with larger seqId than what its contents are. Previous
> behavior in 0.98 and 1.0 (I believe) is that after flush prepare and
> interruption / exception will cause RS abort.
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