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From "Michele Catasta" <michele.cata...@deri.org>
Subject Hbase scripts problem
Date Mon, 27 Aug 2007 14:44:47 GMT
Hi,

we are having problems with hbase scripts. Basically, when we run the
stop script, it's not able to kill gracefully the HMaster (instead, it
forks another HMaster that after a few time dies).

The start script, on the other hand, is not able to start up the
HRegionserver, probably because the HMaster has been killed improperly
before. Taking a look at the logs, I found that he was complaining
because of an already existing directory inside HDFS (regionserver log
directory IIRC). After I deleted it, it is dying for another reason
that I cannot understand:

2007-08-27 14:40:12,979 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 8 on 60010: starting
2007-08-27 14:40:12,979 INFO org.apache.hadoop.hbase.HRegionServer:
HRegionServer started at: 140.203.154.219:60010
2007-08-27 14:40:12,980 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 9 on 60010: starting
2007-08-27 14:40:12,984 INFO org.apache.hadoop.hbase.Leases: closing leases
2007-08-27 14:40:12,984 INFO org.apache.hadoop.hbase.Leases: leases closed
2007-08-27 14:40:12,984 INFO org.apache.hadoop.ipc.Server: Stopping
server on 60010
2007-08-27 14:40:12,985 INFO org.apache.hadoop.ipc.Server: IPC Server
handler 0 on 60010: exiting

This is a snippet of the log file. Handlers are initialized and soon
after stopped. Maybe because I've used start-hbase.sh even if an
HMaster instance was already up?


We would like to solve this situation in a graceful way, because the
last time we needed to erase all our hbase content.


Best Regards,
    -Michele Catasta

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