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https://issues.apache.org/jira/browse/KUDU-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Grant Henke updated KUDU-2117:
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Labels: scalability (was: )
> Spread metadata across multiple data directories
> ------------------------------------------------
>
> Key: KUDU-2117
> URL: https://issues.apache.org/jira/browse/KUDU-2117
> Project: Kudu
> Issue Type: Improvement
> Components: fs, tablet, tserver
> Affects Versions: 1.6.0
> Reporter: Andrew Wong
> Assignee: Andrew Wong
> Priority: Major
> Labels: scalability
>
> Tablet metadata and consensus metadata are placed in the first configured
> data directory. This is an issue, as every write to these metadata incurs an
> fsync and this stresses the first disk considerably more than the others
> One way around this is to spread metadata across multiple data directories. A
> natural choice would be to place them in a directory within the tablet's disk
> group. In this way, the data/metadata can be completely localized to the disk
> group, which has the added benefit of making the risk of disk failures easier
> to assess per tablet.
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