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https://issues.apache.org/jira/browse/HBASE-15181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928560#comment-15928560
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Tianying Chang commented on HBASE-15181:
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[~davelatham] Good point about the set time range vs encoding the time
information into the row. By opentsdb schema design, my gut feeling is it is
not using set time range, unfortunately. I will verify it.
If it is not using set time range, I guess since our opentsdb usage configured
to only keep 28 days with TTL set to 28, one benefit is we can utilize is it
can drop the whole store files with the expired TTL.
> A simple implementation of date based tiered compaction
> -------------------------------------------------------
>
> Key: HBASE-15181
> URL: https://issues.apache.org/jira/browse/HBASE-15181
> Project: HBase
> Issue Type: New Feature
> Components: Compaction
> Reporter: Clara Xiong
> Assignee: Clara Xiong
> Fix For: 2.0.0, 1.3.0, 0.98.18
>
> Attachments: HBASE-15181-0.98-ADD.patch, HBASE-15181-0.98.patch,
> HBASE-15181-0.98.v4.patch, HBASE-15181-98.patch, HBASE-15181-ADD.patch,
> HBASE-15181-branch-1.patch, HBASE-15181-master-v1.patch,
> HBASE-15181-master-v2.patch, HBASE-15181-master-v3.patch,
> HBASE-15181-master-v4.patch, HBASE-15181-v1.patch, HBASE-15181-v2.patch
>
>
> This is a simple implementation of date-based tiered compaction similar to
> Cassandra's for the following benefits:
> 1. Improve date-range-based scan by structuring store files in date-based
> tiered layout.
> 2. Reduce compaction overhead.
> 3. Improve TTL efficiency.
> Perfect fit for the use cases that:
> 1. has mostly date-based date write and scan and a focus on the most recent
> data.
> 2. never or rarely deletes data.
> Out-of-order writes are handled gracefully. Time range overlapping among
> store files is tolerated and the performance impact is minimized.
> Configuration can be set at hbase-site.xml or overriden at per-table or
> per-column-famly level by hbase shell.
> Design spec is at
> https://docs.google.com/document/d/1_AmlNb2N8Us1xICsTeGDLKIqL6T-oHoRLZ323MG_uy8/edit?usp=sharing
> Results in our production is at
> https://docs.google.com/document/d/1GqRtQZMMkTEWOijZc8UCTqhACNmdxBSjtAQSYIWsmGU/edit#
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