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From "Duo Zhang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-15368) Add relative window support
Date Thu, 03 Mar 2016 01:54:18 GMT

    [ https://issues.apache.org/jira/browse/HBASE-15368?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15176955#comment-15176955
] 

Duo Zhang commented on HBASE-15368:
-----------------------------------

The important thing is the abstraction I think... But it is strange to abstract a factory
but only has one implementation, so I add a implementation that just follow cassandra's DTCS.
It is released in a production and the compaction logic seems much simpler(compact if a window
contains more than 4 files).
I think we could optimize it later when we collect some performance data? We have RatioBasedCompactionPolicy,
then ExploringCompactionPolicy, and may still introduce new compaction policies.
What do you think?

Thanks.

> Add relative window support
> ---------------------------
>
>                 Key: HBASE-15368
>                 URL: https://issues.apache.org/jira/browse/HBASE-15368
>             Project: HBase
>          Issue Type: Sub-task
>          Components: Compaction
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>         Attachments: HBASE-15368-v1.patch, HBASE-15368.patch
>
>
> To better determine 'hot' data.



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