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https://issues.apache.org/jira/browse/HBASE-24289?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17130422#comment-17130422
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Mengqing Peng commented on HBASE-24289:
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Yes. Only region's tmp dir has sub dir, and hfile in compacting can inherit tmp
dir's storage policy. Then move hfile to region dir when compaction completed
as normal. Thanks [~zghao] explained it.
> Heterogeneous Storage for Date Tiered Compaction
> ------------------------------------------------
>
> Key: HBASE-24289
> URL: https://issues.apache.org/jira/browse/HBASE-24289
> Project: HBase
> Issue Type: New Feature
> Components: Compaction
> Reporter: Mengqing Peng
> Assignee: Mengqing Peng
> Priority: Major
>
> Support DateTiredCompaction(HBASE-15181) for cold and hot data separation,
> support different storage policies for different time periods of data to get
> better performance, for example, we can configure the data of last 1 month in
> SSD, and 1 month ago data was in HDD.
> design doc:
> https://docs.google.com/document/d/1fk_EWLNnxniwt3gDjUS_apQ3cPzn90AmvDT1wkirvKE/edit?usp=sharing
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