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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7801) Allow a deferred sync option per Mutation.
Date Thu, 14 Feb 2013 08:12:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13578216#comment-13578216
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Anoop Sam John commented on HBASE-7801:
---------------------------------------

bq.Not running the LogSyncer thread at all seems like a recipe for unexpected behavior.
Or are you saying you to temporarily disable the syncer thread, while a bigger "transaction"
is in progress?

In our case we didn't want the LogSyncer to be there at all as all the Mutation to all tables
need to be sync immediately.
                
> Allow a deferred sync option per Mutation.
> ------------------------------------------
>
>                 Key: HBASE-7801
>                 URL: https://issues.apache.org/jira/browse/HBASE-7801
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Assignee: Lars Hofhansl
>             Fix For: 0.96.0, 0.94.6
>
>         Attachments: 7801-0.94-v1.txt
>
>
> Won't have time for parent. But a deferred sync option on a per operation basis comes
up quite frequently.
> In 0.96 this can be handled cleanly via protobufs and 0.94 we can have a special mutation
attribute.
> For batch operation we'd take the safest sync option of any of the mutations. I.e. if
there is at least one that wants to be flushed we'd sync the batch, if there's none of those
but at least one that wants deferred flush we defer flush the batch, etc.

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