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https://issues.apache.org/jira/browse/HBASE-6981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kannan Muthukkaruppan updated HBASE-6981:
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Assignee: Liyin Tang (was: Kannan Muthukkaruppan)
> multiple commit logs per region server
> --------------------------------------
>
> Key: HBASE-6981
> URL: https://issues.apache.org/jira/browse/HBASE-6981
> Project: HBase
> Issue Type: New Feature
> Reporter: Kannan Muthukkaruppan
> Assignee: Liyin Tang
>
> For write dominated workloads, the fact that we have only 1 commit log per
> server artificially limits the aggregate throughput to that of one disk
> (this is especially true if we do true FS level syncs on each datanode, or
> even frequent intermittent FS level syncs as data is being written to each
> block).
> We could consider allowing a configurable number of commit logs per server
> (perhaps something close to or slightly less than the number of disks per
> server), and we could shard regions on the server, by maybe just a simple
> modulo scheme, into those commit logs.
> [A quick way to experiment with the same might be to run multiple region
> server instances per server; but might be better operationally to package the
> feature into a single region server.]
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