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References: <7c962aed0908172252q5eab02fax7dfada4ee99dcb32@mail.gmail.com>
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Date: Tue, 18 Aug 2009 12:20:32 -0700
Message-ID: <7c962aed0908181220j337476fag41d49cdb6193b30d@mail.gmail.com>
Subject: Re: hbase 0.20.0 Release Candidate 2 available for download
From: stack <stack@duboce.net>
To: hbase-dev@hadoop.apache.org
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Thats a good one Billy.  IMO, we can wait till 0.20.1 for a fix.
St.Ack

On Tue, Aug 18, 2009 at 12:12 PM, Billy Pearson
<sales@pearsonwholesale.com>wrote:

> take a look at
> HBASE-1777
> not sure but It might need to be addressed in 0.20.0
>
> This cause my whole cluster to go down because each server reloads the bad
> column from hlog replays and the next server goes down on the next memstore
> flush for that region.
>
> Billy
>
>
>
>
> "stack" <stack@duboce.net> wrote in message
> news:7c962aed0908181146q28a9a788la3fe8c3756fbe6c@mail.gmail.com...
>
>> Please file a bug Billy.
>>
>> IMO this is not a critical issue since its easy enough making a
>> workaround.
>>
>> Thanks,
>> St.Ack
>>
>> On Tue, Aug 18, 2009 at 10:58 AM, Billy Pearson
>> <sales@pearsonwholesale.com>wrote:
>>
>>  testing RC2
>>>
>>> found
>>> 2009-08-18 12:54:16,572 FATAL
>>> org.apache.hadoop.hbase.regionserver.MemStoreFlusher: Replay of hlog
>>> required. Forcing server shutdown
>>> org.apache.hadoop.hbase.DroppedSnapshotException: region:
>>> webdata,http:\x2F\x2Fanaal-genomen.isporno.nl\x2F,1250569930062
>>>      at
>>>
>>> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:950)
>>>      at
>>> org.apache.hadoop.hbase.regionserver.HRegion.flushcache(HRegion.java:843)
>>>      at
>>>
>>> org.apache.hadoop.hbase.regionserver.MemStoreFlusher.flushRegion(MemStoreFlusher.java:241)
>>>      at
>>>
>>> org.apache.hadoop.hbase.regionserver.MemStoreFlusher.run(MemStoreFlusher.java:149)
>>> Caused by: java.io.IOException: Key length 183108 > 65536
>>>      at
>>> org.apache.hadoop.hbase.io.hfile.HFile$Writer.checkKey(HFile.java:511)
>>>      at
>>> org.apache.hadoop.hbase.io.hfile.HFile$Writer.append(HFile.java:479)
>>>      at
>>> org.apache.hadoop.hbase.io.hfile.HFile$Writer.append(HFile.java:447)
>>>      at
>>>
>>> org.apache.hadoop.hbase.regionserver.Store.internalFlushCache(Store.java:525)
>>>      at
>>> org.apache.hadoop.hbase.regionserver.Store.flushCache(Store.java:489)
>>>      at
>>>
>>> org.apache.hadoop.hbase.regionserver.HRegion.internalFlushcache(HRegion.java:935)
>>>      ... 3 more
>>>
>>>
>>> looks like from a mr job we allow keys larger then 65536 to be processed
>>> but when the memcache flush happends we kill the server should the client
>>> not fail before the long key gets in to memory?
>>>
>>> Billy
>>>
>>>
>>>
>>> "stack" <stack@duboce.net> wrote in message
>>> news:7c962aed0908172252q5eab02fax7dfada4ee99dcb32@mail.gmail.com...
>>>
>>>  The second hbase 0.20.0 release candidate is available for download:
>>>>
>>>> http://people.apache.org/~stack/hbase-0.20.0-candidate-2/<http://people.apache.org/%7Estack/hbase-0.20.0-candidate-2/>
>>>> <http://people.apache.org/%7Estack/hbase-0.20.0-candidate-2/>
>>>>
>>>> Near to 450 issues have been addressed since the 0.19 branch.  Release
>>>> notes
>>>> are available here: http://su.pr/18zcEO <http://tinyurl.com/8xmyx9>.
>>>>
>>>> HBase 0.20.0 runs on Hadoop 0.20.0.  Alot has changed since 0.19.x
>>>> including
>>>> configuration fundamentals.  Be sure to read the 'Getting Started'
>>>> documentation in 0.20.0 available here: http://su.pr/8YQjHO
>>>>
>>>> If you wish to bring your 0.19.x hbase data forward to 0.20.0, you will
>>>> need
>>>> to run a migration.  See
>>>> http://wiki.apache.org/hadoop/Hbase/HowToMigrate
>>>> .
>>>> First read the overview and then go to the section, 'From 0.19.x to
>>>> 0.20.x'.
>>>>
>>>> Should we release this candidate as hbase 0.20.0?  Please vote +1/-1 by
>>>> Wednesday, August 25th.
>>>>
>>>> Yours,
>>>> The HBasistas
>>>>
>>>>
>>>>
>>>
>>>
>>
>
>

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