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From "ramkrishna.s.vasudevan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12817) Data missing while scanning using PREFIX_TREE DATA-BLOCK-ENCODING
Date Wed, 07 Jan 2015 11:48:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12817?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14267551#comment-14267551
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ramkrishna.s.vasudevan commented on HBASE-12817:
------------------------------------------------

Thanks for filing this [~Apache9]. Are you working on a patch for this?

> Data missing while scanning using PREFIX_TREE DATA-BLOCK-ENCODING
> -----------------------------------------------------------------
>
>                 Key: HBASE-12817
>                 URL: https://issues.apache.org/jira/browse/HBASE-12817
>             Project: HBase
>          Issue Type: Bug
>          Components: Scanners
>    Affects Versions: 0.98.9
>            Reporter: zhangduo
>            Assignee: zhangduo
>
> write a testcase like this
> {code}
>   @Test
>   public void test() throws IOException {
>     for (int i = 0; i < 100; i++) {
>       region.put(new Put(Bytes.toBytes("obj" + (2900 + i))).add(fam, qual1, Bytes.toBytes(i)));
>     }
>     region.put(new Put(Bytes.toBytes("obj299")).add(fam, qual1, Bytes.toBytes("whatever")));
>     region.put(new Put(Bytes.toBytes("obj29")).add(fam, qual1, Bytes.toBytes("whatever")));
>     region.put(new Put(Bytes.toBytes("obj2")).add(fam, qual1, Bytes.toBytes("whatever")));
>     region.put(new Put(Bytes.toBytes("obj3")).add(fam, qual1, Bytes.toBytes("whatever")));
>     region.flushcache(true);
>     Scan scan = new Scan(Bytes.toBytes("obj29995"));
>     RegionScanner scanner = region.getScanner(scan);
>     List<Cell> cells = new ArrayList<Cell>();
>     assertFalse(scanner.next(cells));
>     assertArrayEquals(Bytes.toBytes("obj3"), Result.create(cells).getRow());
>   }
> {code}
> use obj29995 to scan should return obj3, but obj2990 is returned.
> Seems a bug introduced by the fix of HBASE-11728.



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