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From "Jean-Daniel Cryans (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-2041) Change WAL default configuration values
Date Tue, 15 Dec 2009 23:37:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-2041?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jean-Daniel Cryans updated HBASE-2041:
--------------------------------------

    Attachment: HBASE-2041-shell.patch

Patch that adds the option of setting DEFERRED_LOG_FLUSH in the shell. I also changed the
fact that if you don't specify the other settings, they won't get reset to default.

> Change WAL default configuration values
> ---------------------------------------
>
>                 Key: HBASE-2041
>                 URL: https://issues.apache.org/jira/browse/HBASE-2041
>             Project: Hadoop HBase
>          Issue Type: Task
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.21.0
>
>         Attachments: HBASE-2041-interrupt-fix.patch, HBASE-2041-shell.patch, HBASE-2041.patch
>
>
> My last email on the thread "Should we change the default value of hbase.regionserver.flushlogentries
for 0.21?"
> {quote}
> Ok to make sure I get this right:
> - we enable deferred log flush by default
> - we set flushlogentries=1
> Also since 10 seconds is kind of a huge window I propose that:
> - we set optionalLogFlush=1000
> which is the MySQL default. We also have to update the wiki (there's
> already an entry on deferred log flush) by adding the configuration of
> flushlogentries.
> {quote}

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