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Posted to issues@hbase.apache.org by "Lars Hofhansl (Commented) (JIRA)" <ji...@apache.org> on 2011/12/30 07:07:30 UTC
[jira] [Commented] (HBASE-5108) ICV puts memstore before writing
WAL first -- by default; make the default be 'correct' and let better perf
be optional
[ https://issues.apache.org/jira/browse/HBASE-5108?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13177570#comment-13177570 ]
Lars Hofhansl commented on HBASE-5108:
--------------------------------------
As discussed in HBASE-4583, this will make ICV significantly slower, unless writeToWal is set to false.
> ICV puts memstore before writing WAL first -- by default; make the default be 'correct' and let better perf be optional
> -----------------------------------------------------------------------------------------------------------------------
>
> Key: HBASE-5108
> URL: https://issues.apache.org/jira/browse/HBASE-5108
> Project: HBase
> Issue Type: Bug
> Reporter: stack
> Priority: Critical
>
> See this thread up on the list and Lars' note on the end: http://search-hadoop.com/m/Y6xTRp6sxq1/%2522Help+regarding+RowLock%2522&subj=Help+regarding+RowLock
> I thought it was just ICV that did the memstore put first. This issue is about making it so the described behavior is optional and that the default out of the box goes for correctness -- i.e. write WAL first and then memstore.
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