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https://issues.apache.org/jira/browse/HBASE-6200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13401943#comment-13401943
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Jieshan Bean commented on HBASE-6200:
-------------------------------------
All tests passed for 90.
> KeyComparator.compareWithoutRow can be wrong when families have the same
> prefix
> -------------------------------------------------------------------------------
>
> Key: HBASE-6200
> URL: https://issues.apache.org/jira/browse/HBASE-6200
> Project: HBase
> Issue Type: Bug
> Affects Versions: 0.90.6, 0.92.1, 0.94.0
> Reporter: Jean-Daniel Cryans
> Assignee: Jieshan Bean
> Priority: Blocker
> Fix For: 0.90.7, 0.92.2, 0.96.0, 0.94.1
>
> Attachments: 6200-0.92.txt, 6200-0.94.txt, 6200-90.patch,
> 6200-trunk-v2.patch, 6200-trunk-v3.patch, 6200-trunk-v4.txt
>
>
> As reported by Desert Rose on IRC and on the ML, {{Result}} has a weird
> behavior when some families share the same prefix. He posted a link to his
> code to show how it fails, http://pastebin.com/7TBA1XGh
> Basically {{KeyComparator.compareWithoutRow}} doesn't differentiate families
> and qualifiers so "f:a" is said to be bigger than "f1:", which is false. Then
> what happens is that the KVs are returned in the right order from the RS but
> then doing {{Result.binarySearch}} it uses
> {{KeyComparator.compareWithoutRow}} which has a different sorting so the end
> result is undetermined.
> I added some debug and I can see that the data is returned in the right order
> but {{Arrays.binarySearch}} returned the wrong KV, which is then verified
> agains the passed family and qualifier which fails so null is returned.
> I don't know how frequent it is for users to have families with the same
> prefix, but those that do have that and that use those families at the same
> time will have big correctness issues. This is why I mark this as a blocker.
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