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Posted to oak-issues@jackrabbit.apache.org by "Michael Dürig (JIRA)" <ji...@apache.org> on 2018/10/19 10:07:00 UTC
[jira] [Commented] (OAK-7853) SegmentBufferWriter not flushed after
OnRC
[ https://issues.apache.org/jira/browse/OAK-7853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16656567#comment-16656567 ]
Michael Dürig commented on OAK-7853:
------------------------------------
[~frm], could you verify me reasoning from the issue description? So far I don't have a test case for this, just deduction.
> SegmentBufferWriter not flushed after OnRC
> ------------------------------------------
>
> Key: OAK-7853
> URL: https://issues.apache.org/jira/browse/OAK-7853
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: segment-tar
> Reporter: Michael Dürig
> Assignee: Michael Dürig
> Priority: Major
> Fix For: 1.10
>
>
> I suspect there is a rare case where a {{SegmentBufferWriter}} is not flushed from the {{SegmentBufferWriterPool}}. This would happen after OnRC when a previous writer is [disposed|https://github.com/apache/jackrabbit-oak/blob/trunk/oak-segment-tar/src/main/java/org/apache/jackrabbit/oak/segment/SegmentBufferWriterPool.java#L194] (vs. being re-used). AFAIU this currently those writers would never be flushed any more and thus lose their transient segment when the store is shut down. This will lead to an inconsistent store ({{SNFE}}).
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