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Hey Wen,

First off, use the right Hadoop for HBase:
http://hbase.apache.org/book.html#hadoop - 0.20.203 isn't a version
that would work properly with HBase.

Regarding your trouble - did you notice something odd in your RegionServer logs?

On Wed, Apr 25, 2012 at 8:41 AM, wen yang <[EMAIL PROTECTED]> wrote:
> Hi,
>
> When I run a program including some basic operations on  HBase tables for
> several hours,Hbase stops.My  hadoop version is 0.20.203.0 and Hbase
> version is 0.90.4.
>
> The Hbase log is as follows:
>
> 2012-04-25 00:03:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335282353563,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335282353505}
>
> 2012-04-25 00:08:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335282353563,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335282353505}
>
> 2012-04-25 00:13:44,191 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335282353563,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335282353505}
>
> 2012-04-25 00:15:55,056 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Regions in transition
> timed out:  .META.,,1.1028785192 state=OFFLINE, ts=1335282353563
>
> 2012-04-25 00:15:55,057 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Region has been OFFLINE
> for too long, reassigning .META.,,1.1028785192 to a random server
>
> 2012-04-25 00:15:55,057 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Regions in transition
> timed out:  -ROOT-,,0.70236052 state=OFFLINE, ts=1335282353505
>
> 2012-04-25 00:15:55,057 INFO
> org.apache.hadoop.hbase.master.AssignmentManager: Region has been OFFLINE
> for too long, reassigning -ROOT-,,0.70236052 to a random server
>
> 2012-04-25 00:15:55,057 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Forcing OFFLINE;
> was=.META.,,1.1028785192 state=OFFLINE, ts=1335282353563
>
> 2012-04-25 00:15:55,058 DEBUG
> org.apache.hadoop.hbase.master.AssignmentManager: Forcing OFFLINE;
> was=-ROOT-,,0.70236052 state=OFFLINE, ts=1335282353505
>
> 2012-04-25 00:18:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335284155078}
>
> 2012-04-25 00:23:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335284155078}
>
> 2012-04-25 00:28:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335284155078}
>
> 2012-04-25 00:33:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335284155078}
>
> 2012-04-25 00:38:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,
> 70236052=-ROOT-,,0.70236052 state=OFFLINE, ts=1335284155078}
>
> 2012-04-25 00:43:44,190 DEBUG org.apache.hadoop.hbase.master.HMaster: Not
> running balancer because 2 region(s) in transition:
> {1028785192=.META.,,1.1028785192 state=OFFLINE, ts=1335284155057,

Harsh J