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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-13807) [0.98] NoTagsKeyValue optimization is not proper
Date Fri, 29 May 2015 12:25:18 GMT

     [ https://issues.apache.org/jira/browse/HBASE-13807?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Anoop Sam John updated HBASE-13807:
-----------------------------------
    Affects Version/s: 0.98.13

> [0.98] NoTagsKeyValue optimization is not proper
> ------------------------------------------------
>
>                 Key: HBASE-13807
>                 URL: https://issues.apache.org/jira/browse/HBASE-13807
>             Project: HBase
>          Issue Type: Bug
>    Affects Versions: 0.98.13
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 0.98.14
>
>         Attachments: HBASE-13807-0.98.patch
>
>
> When the file format is V2, it has no support for tags and so cells will be with 0 tags
length. For such cells we make NoTagsKeyValue which avoid getTagsLength parsing overhead in
KeyValue. Still HFileReaderV2 creates KeyValue.
> This is a 0.98 issue only.
> Also in case of DBE, we can consider the tags length and return KeyValue/NoTagsKeyValue



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