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From "Phabricator (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-5515) Add a processRow API that supports atomic multiple reads and writes on a row
Date Mon, 05 Mar 2012 23:17:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-5515?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13222749#comment-13222749
] 

Phabricator commented on HBASE-5515:
------------------------------------

tedyu has commented on the revision "HBASE-5515 [jira] Add a processRow API that supports
atomic multiple reads and writes on a row".

  Good progress.

INLINE COMMENTS
  src/main/java/org/apache/hadoop/hbase/coprocessor/RowProcessor.java:43 Please explain type
parameter T in javadoc.
  src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java:4379 mutations may have
many elements.
  We should control the length of this log.
  src/main/java/org/apache/hadoop/hbase/coprocessor/RowProcessor.java:72 This method is used
for testing.
  I suggest making it package private.

  Also, walEdits is empty upon entrance to this method.
  Do we need to expose it ? It is not used by friends of friends test.

REVISION DETAIL
  https://reviews.facebook.net/D2067

                
> Add a processRow API that supports atomic multiple reads and writes on a row
> ----------------------------------------------------------------------------
>
>                 Key: HBASE-5515
>                 URL: https://issues.apache.org/jira/browse/HBASE-5515
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Scott Chen
>            Assignee: Scott Chen
>         Attachments: HBASE-5515.D2067.1.patch, HBASE-5515.D2067.10.patch, HBASE-5515.D2067.2.patch,
HBASE-5515.D2067.3.patch, HBASE-5515.D2067.4.patch, HBASE-5515.D2067.5.patch, HBASE-5515.D2067.6.patch,
HBASE-5515.D2067.7.patch, HBASE-5515.D2067.8.patch, HBASE-5515.D2067.9.patch
>
>
> We have modified HRegion.java internally to do some atomic row processing. It will be
nice to have a plugable API for this.

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