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From Ted Yu <yuzhih...@gmail.com>
Subject initial experience with HBase 0.90.1 rc0
Date Thu, 10 Feb 2011 22:41:40 GMT
I replaced hbase jar with hbase-0.90.1.jar
I also upgraded client side jar to hbase-0.90.1.jar

Our map tasks were running faster than before for about 50 minutes. However,
map tasks then timed out calling flushCommits(). This happened even after
fresh restart of hbase.

I don't see any exception in region server logs.

In master log, I found:

2011-02-10 18:24:15,286 DEBUG
org.apache.hadoop.hbase.master.handler.OpenedRegionHandler: Opened region
-ROOT-,,0.70236052 on sjc1-hadoop6.X.com,60020,1297362251595
2011-02-10 18:24:15,349 INFO org.apache.hadoop.hbase.catalog.CatalogTracker:
Failed verification of .META.,,1 at address=null;
org.apache.hadoop.hbase.NotServingRegionException: Region is not online:
2011-02-10 18:24:15,350 DEBUG org.apache.hadoop.hbase.zookeeper.ZKAssign:
master:60000-0x12e10d0e31e0000 Creating (or updating) unassigned node for
1028785192 with OFFLINE state

I am attaching region server (which didn't respond to stop-hbase.sh) jstack.


On Thu, Feb 10, 2011 at 10:10 AM, Stack <stack@duboce.net> wrote:

> Thats probably enough Ted.  The 0.90.1 hbase-default.xml has an extra
> config. to enable the experimental HBASE-3455 feature but you can copy
> that over if you want to try playing with it (it defaults off so you'd
> copy over the config. if you wanted to set it to true).
> St.Ack

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