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