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From "binlijin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-17332) Replace HashMap to Array for DataBlockEncoding.idToEncoding
Date Mon, 19 Dec 2016 10:44:58 GMT

     [ https://issues.apache.org/jira/browse/HBASE-17332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

binlijin updated HBASE-17332:
-----------------------------
    Status: Patch Available  (was: Open)

> Replace HashMap to Array for DataBlockEncoding.idToEncoding
> -----------------------------------------------------------
>
>                 Key: HBASE-17332
>                 URL: https://issues.apache.org/jira/browse/HBASE-17332
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 2.0.0
>            Reporter: binlijin
>            Assignee: binlijin
>             Fix For: 2.0.0
>
>         Attachments: DBE.idToEncoding.png, DBE.idToEncoding_afterOptimize.png, HBASE-17332.V2.patch,
HBASE-17332.V3.patch, HBASE-17332.patch
>
>
> Array is faster than HashMap also no need to autoboxing.
> I can see the DataBlockEncoding#getDataBlockEncoderById is a hot method if enable encoding
in my perf test(Random read, all data cache in LruBlockCache). 



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