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From "HBase Review Board (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-3211) Key (Index) Only Fetches
Date Thu, 11 Nov 2010 00:05:19 GMT

    [ https://issues.apache.org/jira/browse/HBASE-3211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12930852#action_12930852

HBase Review Board commented on HBASE-3211:

Message from: "Jonathan Gray" <jgray@apache.org>

bq.  On 2010-11-10 16:01:22, Nicolas wrote:
bq.  > trunk/src/main/java/org/apache/hadoop/hbase/KeyValue.java, line 1199
bq.  > <http://review.cloudera.org/r/1208/diff/1/?file=17147#file17147line1199>
bq.  >
bq.  >     Would it be more straightforward to have a ReturnCode.MODIFY, that signals an
include but suggests that the program must call modifyKeyValue() to get the transformed data.
 Maybe this is too much of a one-off case...

Not sure I completely follow.  You're saying the modification would happen outside the filter?
 No one needs to call modifyKeyValue() to get the transformed data, it's done in the filter.

In any case, yeah, I would not be for adding another ReturnCode just for this.

- Jonathan

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> Key (Index) Only Fetches
> ------------------------
>                 Key: HBASE-3211
>                 URL: https://issues.apache.org/jira/browse/HBASE-3211
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Kannan Muthukkaruppan
>            Assignee: Jonathan Gray
>             Fix For: 0.90.0
>         Attachments: HBASE-3211-v2.patch, HBASE-3211-v3.patch
> When you retrieve data from HBase you get Key (Row+Column+Timestamp) + Values. 
> It would be nice to have a mode where we only fetch the keys (i.e. the index) but not
the values.

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