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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7928) Scanning .META. with startRow and/or stopRow is not giving proper results
Date Wed, 06 Mar 2013 06:16:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13594413#comment-13594413
] 

Ted Yu commented on HBASE-7928:
-------------------------------

I don't think we need to revert.
As I showed in HBASE-8010, the check for valid META table row should be changed to account
for two commas which are not adjacent.
                
> Scanning .META. with startRow and/or stopRow is not giving proper results
> -------------------------------------------------------------------------
>
>                 Key: HBASE-7928
>                 URL: https://issues.apache.org/jira/browse/HBASE-7928
>             Project: HBase
>          Issue Type: Bug
>          Components: Usability
>    Affects Versions: 0.94.5
>            Reporter: Jean-Marc Spaggiari
>            Assignee: ramkrishna.s.vasudevan
>             Fix For: 0.95.0, 0.98.0
>
>         Attachments: HBASE-7928_0.94_1.patch, HBASE-7928_0.94_2.patch, HBASE-7928_0.94_3.patch,
HBASE-7928_0.94_3.patch, HBASE-7928_0.94.patch, HBASE-7928_trunk_1.patch, HBASE-7928_trunk_2.patch,
HBASE-7928_trunk_2.patch, HBASE-7928_trunk.patch
>
>
> {code}
>     try {
>       HTable metaTable = new HTable(config, Bytes.toBytes(".META."));
>       Scan scan = new Scan();
>       scan.setStartRow(Bytes.toBytes("e"));
>       scan.setStopRow(Bytes.toBytes("z"));
>       ResultScanner scanner = metaTable.getScanner(scan);
>       Result[] results = scanner.next(100);
>       while (results.length > 0) {
>         for (Result result : results) {
>           System.out.println(Bytes.toString(result.getRow()));
>         }
>         results = scanner.next(100);
>       }
>       scanner.close();
>       metaTable.close();
>     } catch (Exception e) {
>       e.printStackTrace();
>     }
> {code}
> This code will not return any result even if there is 10 tables with names starting with
"d" to "w", including one table called "entry". If you comment the setStopRow you will get
results, but will still get rows starting with "d" even if setStartRow is set to "e".
> Same code using with a user table is working fine.
> Facing the same issue with the shell.
> scan '.META.' , {STARTROW => 'e', LIMIT => 10} is returning rows starting by "d".
> scan '.META.' , {STARTROW => 'e', STOPROW => 'v', LIMIT => 10} is not returning
anything.

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