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https://issues.apache.org/jira/browse/HBASE-12078?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14147920#comment-14147920
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ramkrishna.s.vasudevan commented on HBASE-12078:
------------------------------------------------
The fix seems fine with me
{code}
+ if (!currentRowNode.hasOccurrences() && rowLength >= key.getRowLength()) {
// key was shorter
+ return -1;
+ }
{code}
Can we add the new test case to the existing TestPrefixTree itself and check
for both the cases.
> Missing Data when scanning using PREFIX_TREE DATA-BLOCK-ENCODING
> ----------------------------------------------------------------
>
> Key: HBASE-12078
> URL: https://issues.apache.org/jira/browse/HBASE-12078
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.98.6.1
> Environment: CentOS 6.3
> hadoop 2.5.0(hdfs)
> hadoop 2.2.0(hbase)
> hbase 0.98.6.1
> sun-jdk 1.7.0_67-b01
> Reporter: zhangduo
> Assignee: zhangduo
> Priority: Critical
> Fix For: 2.0.0, 0.98.7, 0.99.1
>
> Attachments: HBASE-12078.patch, prefix_tree_error.patch
>
>
> our row key is combined with two ints, and we found that sometimes when we
> using only the first int part to scan, the result returned may missing some
> rows. But when we dump the whole hfile, the row is still there.
> We have written a testcase to reproduce the bug. It works like this:
> put 1-12345
> put 12345-0x01000000
> put 12345-0x01010000
> put 12345-0x02000000
> put 12345-0x02020000
> put 12345-0x03000000
> put 12345-0x03030000
> put 12345-0x04000000
> put 12345-0x04040000
> flush memstore
> then scan using 12345，the returned row key will be
> 12345-0x20000000(12345-0x10000000 expected)
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