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https://issues.apache.org/jira/browse/HBASE-10487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13897619#comment-13897619
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Hudson commented on HBASE-10487:
--------------------------------
FAILURE: Integrated in HBase-TRUNK #4908 (See
[https://builds.apache.org/job/HBase-TRUNK/4908/])
HBASE-10487 Avoid allocating new KeyValue and according bytes-copying for
appended kvs which don't have existing values (Honghua) (tedyu: rev 1566981)
*
/hbase/trunk/hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java
*
/hbase/trunk/hbase-server/src/test/java/org/apache/hadoop/hbase/client/TestFromClientSide.java
> Avoid allocating new KeyValue and according bytes-copying for appended kvs
> which don't have existing 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, new KeyValues will be allocated and do according
> bytes-copying no matter whether there are existing kv for the appended cells,
> we can improve here by avoiding the allocating of new KeyValue and according
> bytes-copying for kv which don't have existing(old) values by reusing the
> passed-in kv and only updating its timestamp to 'now'(its original timestamp
> is latest, so can be updated)
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