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Date: Fri, 22 Feb 2013 00:10:14 +0000 (UTC)
From: "Sergey Shelukhin (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12631569.1360392398887.320355.1361491814190@arcas>
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References: <JIRA.12631569.1360392398887@arcas>
Subject: [jira] [Commented] (HBASE-7801) Allow a deferred sync option per
 Mutation.
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    [ https://issues.apache.org/jira/browse/HBASE-7801?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13583711#comment-13583711 ] 

Sergey Shelukhin commented on HBASE-7801:
-----------------------------------------

{code}
+        } else if (!shouldSyncWal) {
+          shouldSyncWal |= !m.getDeferWALFlush();
{code}
|= is not necessary.

                
> 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, 7801-0.94-v2.txt, 7801-0.96-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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