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From "Jesse Yates (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-9834) Minimize byte[] copies for 'smart' clients
Date Tue, 29 Oct 2013 01:41:31 GMT

     [ https://issues.apache.org/jira/browse/HBASE-9834?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jesse Yates updated HBASE-9834:
-------------------------------

    Attachment: hbase-9834-0.94-v2.patch

Attaching updated 0.94 patch.

Removes the default to ClientKeyValue in Put/Delete creation (so everything is again just
a KeyValue).

Other notable changes were necessary though in testing (added a few more) to allow a ClientKeyValue
to work. For instance, Delete#addDeleteMarker only supported adding KeyValue.Type.Delete,
but really should support all the delete types. Also, needed to fix the row comparison exception
since it expects KeyValue to be backed by a buffer when printing the error message.

> Minimize byte[] copies for 'smart' clients
> ------------------------------------------
>
>                 Key: HBASE-9834
>                 URL: https://issues.apache.org/jira/browse/HBASE-9834
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>            Reporter: Jesse Yates
>            Assignee: Jesse Yates
>             Fix For: 0.94.14
>
>         Attachments: hbase-9834-0.94-v0.patch, hbase-9834-0.94-v1.patch, hbase-9834-0.94-v2.patch
>
>
> 'Smart' clients (e.g. phoenix) that have in-depth knowledge of HBase often bemoan the
extra byte[] copies that must be done when building multiple puts/deletes. We should provide
a mechanism by which they can minimize these copies, but still remain wire compatible. 



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