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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-13807) [0.98] NoTagsKeyValue optimization is not proper
Date Fri, 29 May 2015 11:45:17 GMT
Anoop Sam John created HBASE-13807:

             Summary: [0.98] NoTagsKeyValue optimization is not proper
                 Key: HBASE-13807
                 URL: https://issues.apache.org/jira/browse/HBASE-13807
             Project: HBase
          Issue Type: Bug
            Reporter: Anoop Sam John
            Assignee: Anoop Sam John
             Fix For: 0.98.14

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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