[jira] Updated: (HBASE-748) Add an efficient way to batch update many rows

["Jean-Daniel Cryans (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/HBASE-748?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Daniel Cryans updated HBASE-748:
-------------------------------------

    Attachment: hbase-748-v1.patch

Current status of this issue:

1- The way retries are handled client-side is ugly, cannot be reused for other operations (so HBASE-880 wouldn't fit in).
2- There is duplicated code in the two HTable.commit and HRS.batchUpdate.
3- WRE and NSRE maybe should share a common super class.
4- If any exception is thrown server-side, like values are too long or columns in the wrong format, the state of the whole transaction will be unknown to the user.

But it does give a 2x boost when autoFlush is disabled.

> Add an efficient way to batch update many rows
> ----------------------------------------------
>
>                 Key: HBASE-748
>                 URL: https://issues.apache.org/jira/browse/HBASE-748
>             Project: Hadoop HBase
>          Issue Type: New Feature
>          Components: client
>    Affects Versions: 0.1.3, 0.2.0
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.19.0
>
>         Attachments: hbase-748-v1.patch
>
>
> HBASE-747 introduced a simple way to batch update many rows. The goal of this issue is to have an enhanced version that will send many rows in a single RPC to each region server. To do this, the client code will have to figure which rows goes to which server, group them accordingly and then send them.

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