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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Created: (HBASE-1102) boolean HTable.testRow()
Date Tue, 30 Dec 2008 15:46:44 GMT
boolean HTable.testRow()
------------------------

                 Key: HBASE-1102
                 URL: https://issues.apache.org/jira/browse/HBASE-1102
             Project: Hadoop HBase
          Issue Type: Improvement
            Reporter: Andrew Purtell
            Assignee: Andrew Purtell
             Fix For: 0.19.0


>From up on the list:

> From: Thibaut
> Subject: Exist function?
> To: hbase-user@hadoop.apache.org
> Date: Tuesday, December 30, 2008, 5:32 AM
>
> On a few occasions, I have to check if a key exists in a table or not.
> 
> What's the best way to do it? The htable interface doesn't have any function to check
if a key exists or
> not, and I have to specify at least one column when fetching a key.

It will be pretty easy to support an client side API addition in HRS. For memcache that would
be  containsKey() on the sorted maps. For disk, HStore could use getClosest() on the MapFile
readers. 

    boolean testRow(final byte [] row);
    boolean testRow(String row);


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