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https://issues.apache.org/jira/browse/HBASE-20105?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16399735#comment-16399735
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Jean-Marc Spaggiari commented on HBASE-20105:
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[~anoop.hbase] storagePolicy contains the flush related policy.
this.conf.get(ColumnFamilyDescriptorBuilder.STORAGE_POLICY); containts the CF
related policy. They can be different. And the one after is indeed if there is
nothing specific for this CF. So this sections does:
1) Use Flush policy
2) If none, use CF policy (HBASE-14061)
3) If none, use global config
Regarding HConstant, I have put it there becaure there is other flush related
constants. Do you prefer that somewhere else? What do you suggest?
> Allow flushes to target SSD storage
> -----------------------------------
>
> Key: HBASE-20105
> URL: https://issues.apache.org/jira/browse/HBASE-20105
> Project: HBase
> Issue Type: New Feature
> Components: Performance, regionserver
> Affects Versions: hbase-2.0.0-alpha-4
> Reporter: Jean-Marc Spaggiari
> Assignee: Jean-Marc Spaggiari
> Priority: Major
> Fix For: 2.0.0
>
> Attachments: HBASE-20105-v0.patch, HBASE-20105-v1.patch,
> HBASE-20105-v2.patch, HBASE-20105-v3.patch, HBASE-20105-v4.patch,
> HBASE-20105-v5.patch, HBASE-20105-v6.patch
>
>
> On heavy writes usecases, flushes are compactes together pretty quickly.
> Allowing flushes to go on SSD allows faster flush and faster first
> compactions. Subsequent compactions going on regular storage.
>
> I will be interesting to have an option to target SSD for flushes.
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