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From "Feng Honghua (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-10487) Avoid allocating new KeyValue for appended kvs which don't have existing(old) values
Date Sat, 08 Feb 2014 11:41:19 GMT

     [ https://issues.apache.org/jira/browse/HBASE-10487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Feng Honghua updated HBASE-10487:
---------------------------------

    Attachment: HBASE-10487-trunk_v1.patch

patch attached

> Avoid allocating new KeyValue for appended kvs which don't have existing(old) values
> ------------------------------------------------------------------------------------
>
>                 Key: HBASE-10487
>                 URL: https://issues.apache.org/jira/browse/HBASE-10487
>             Project: HBase
>          Issue Type: Improvement
>          Components: regionserver
>            Reporter: Feng Honghua
>            Assignee: Feng Honghua
>         Attachments: HBASE-10487-trunk_v1.patch
>
>
> in HRegion.append, a new KeyValue will be allocated no matter there is existing kv for
the appended cell, we can improve here by avoiding the allocating of new KeyValue for kv without
existing value by reusing the passed-in kv and only update its timestamp to 'now'(its original
timestamp is latest, so can be updated)



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