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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HBASE-1102) boolean HTable.exists
Date Wed, 31 Dec 2008 09:54:44 GMT

     [ https://issues.apache.org/jira/browse/HBASE-1102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-1102:
----------------------------------

    Resolution: Fixed
        Status: Resolved  (was: Patch Available)

This is a low impact change so I went ahead and committed it based on feedback from the review
of the earlier patch. Can revert if it is problematic.

Passes all local tests. 

> boolean HTable.exists
> ---------------------
>
>                 Key: HBASE-1102
>                 URL: https://issues.apache.org/jira/browse/HBASE-1102
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>            Priority: Minor
>             Fix For: 0.19.0
>
>         Attachments: 1102-1.patch, 1102-2.patch
>
>
> 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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