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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12485) Maintain SeqId monotonically increasing
Date Thu, 04 Dec 2014 22:43:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12485?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14234740#comment-14234740

stack commented on HBASE-12485:

On first point, ok. Log as ERROR then?

On second, yeah, would be good if all 'special' files were in one place (hbck is going to
run into these sequence files one day -- smile)

> Maintain SeqId monotonically increasing
> ---------------------------------------
>                 Key: HBASE-12485
>                 URL: https://issues.apache.org/jira/browse/HBASE-12485
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>             Fix For: 1.0.0, 2.0.0
>         Attachments: HBASE-12485.patch
> We added FLUSH, REGION CLOSE events into WAL, for each those events the region SeqId
is bumped. 
> The issue comes from region close operation. Because when opening a region, we use flushed
SeqId from store files while after store flush during region close we still write COMMIT_FLUSH,
REGION_CLOSE events etc which respectively bump up SeqId. Therefore, the region opening SeqId
is lower than it should be.  

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