[
https://issues.apache.org/jira/browse/HBASE-10487?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13895963#comment-13895963
]
Lars Hofhansl commented on HBASE-10487:
---------------------------------------
Looks good. +1
Is that a common scenario, though. Append is not very useful (compared to just
Put) when you don't update an existing value.
> Avoid allocating new KeyValue and according bytes-copying 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, 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)
--
This message was sent by Atlassian JIRA
(v6.1.5#6160)
