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https://issues.apache.org/jira/browse/HBASE-2295?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12842839#action_12842839
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stack commented on HBASE-2295:
------------------------------

@Dhruba 

If you want to use a SortedSet and pass a comparator instead, so you can retain 
byte [] elements, there is a bytes comparator here: 
http://hadoop.apache.org/hbase/docs/r0.20.3/api/org/apache/hadoop/hbase/util/Bytes.html#BYTES_COMPARATOR
  Otherwise, patch looks good.

Regards TRUNK, its been mavenized so to build it, you need maven -- see 
http://wiki.apache.org/hadoop/Hbase/MavenPrimer -- and then to build and run 
tests do something like mvn install


> Row locks may deadlock with themselves
> --------------------------------------
>
>                 Key: HBASE-2295
>                 URL: https://issues.apache.org/jira/browse/HBASE-2295
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>            Reporter: Todd Lipcon
>         Attachments: rowLockDeadlock.txt
>
>
> Row locks in HRegion are keyed by a int-sized hash of the row key. It's 
> perfectly possible for two rows to hash to the same key. So, if any client 
> tries to lock both rows, it will deadlock with itself. Switching to a 64-bit 
> hash is an improvement but still sketchy.

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