-Re: Scanner returning keys out of order
Jan Lukavský 2013-05-20, 07:58
thanks for reply, we will upgrade and check if the problem goes away.
On 17.5.2013 15:44, Jean-Marc Spaggiari wrote:
> Hi Jan,
> 0.90.6 is a very old version of HBase... Will you have a chance to migrate
> to a more recent one? Most of your issues might probably be already fixed.
> 2013/5/17 Jan Lukavský <[EMAIL PROTECTED]>
>> Hi all,
>> we are seeing very strange behavior of HBase (version 0.90.6-cdh3u5) in
>> the following scenario:
>> 1) Open scanner and start scanning.
>> 2) Check order of returned keys (simple test if next key is
>> lexigraphically greater than the previous one).
>> 3) The check may occasionally fail.
>> When we investigated this a bit, we saw major compaction occurring on the
>> scanned region precisely in the time of the check failure. Interesting is
>> that the compaction occurred on a column family that was not actually
>> involved in the scanning. Has anyone else seen this? Is it possible that
>> this is fixed in any higher version of HBase?