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Date: Wed, 2 Mar 2016 02:34:18 +0000 (UTC)
From: "Ted Yu (JIRA)" <jira@apache.org>
To: issues@hbase.apache.org
Message-ID: <JIRA.12934566.1453924912000.190184.1456886058126@Atlassian.JIRA>
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 <JIRA.12934566.1453924912868@arcas>
Subject: [jira] [Commented] (HBASE-15181) A simple implementation of date
 based tiered compaction
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    [ https://issues.apache.org/jira/browse/HBASE-15181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15174911#comment-15174911 ] 

Ted Yu commented on HBASE-15181:
--------------------------------

Test failures were due to QA environment:

Caused by: java.util.concurrent.ExecutionException: 
java.lang.RuntimeException: Error while running command to get file permissions : ExitCodeException exitCode=127: /bin/ls: error while loading shared libraries: libacl.so.1: failed to map segment from shared object: Permission denied


> 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, 0.98.19, 1.4.0
>
>         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


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