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From "Jean-Marc Spaggiari (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7928) Scanning .META. with startRow and/or stopRow is not giving proper results
Date Tue, 26 Feb 2013 16:36:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7928?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13587237#comment-13587237
] 

Jean-Marc Spaggiari commented on HBASE-7928:
--------------------------------------------

scan '.META.', {STARTROW => 'e', STOPROW => 'f'}
27 row(s) in 0.4560 seconds

Like a charm!

scan '.META.', {STARTROW => 'e', STOPROW => 'ez'}
Working too.

Also working fine with Java Client.
{code}
    try {
      HTable metaTable = new HTable(config, Bytes.toBytes(".META."));
      Scan scan = new Scan();
      scan.setStartRow(Bytes.toBytes("e"));
      scan.setStopRow(Bytes.toBytes("f"));
      ResultScanner scanner = metaTable.getScanner(scan);
      Result[] results = scanner.next(100);
      int regionsCount = 0;
      while (results.length > 0) {
        for (Result result : results) {
          System.out.println(Bytes.toString(result.getRow()));
          regionsCount++;
        }
        results = scanner.next(100);
      }
      scanner.close();
      metaTable.close();
      System.out.println (regionsCount);
    } catch (Throwable throwable) {
      throwable.printStackTrace();
    }
{code}
Is giving me 27 too.

+1 for me. Thanks Ramkrishna for the fix!
                
> 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
>    Affects Versions: 0.94.5
>            Reporter: Jean-Marc Spaggiari
>            Assignee: ramkrishna.s.vasudevan
>         Attachments: HBASE-7928_0.94.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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