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From "Karthik Ranganathan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3150) Allow some column to not write WALs
Date Fri, 10 Dec 2010 23:37:01 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3150?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12970339#action_12970339
] 

Karthik Ranganathan commented on HBASE-3150:
--------------------------------------------

Yes, a co-processors based implementation would totally work.

> Allow some column to not write WALs
> -----------------------------------
>
>                 Key: HBASE-3150
>                 URL: https://issues.apache.org/jira/browse/HBASE-3150
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Karthik Ranganathan
>            Priority: Minor
>
> We have this unique requirement where some column families hold data that is indexed
from other existing column families. The index data is very large, and we end up writing these
inserts into the WAL and then into the store files. In addition to taking more iops, this
also slows down splitting files for recovery, etc.
> Creating this task to have an option to suppress WAL logging on a per CF basis.

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