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From stack <st...@duboce.net>
Subject Re: new API method HTable.incrementColumnValue hangs
Date Mon, 15 Jun 2009 16:38:44 GMT
On Mon, Jun 15, 2009 at 5:55 AM, Irfan Mohammed <irfan.ma@gmail.com> wrote:

> using the hbase from the trunk on ubuntu 9.04
> irfan@damascus:~$ hbase shell
> HBase Shell; enter 'help<RETURN>' for list of supported commands.
> Version: 0.20.0-dev, r784503, Sun Jun 14 15:36:01 EDT 2009
> Whenever I use the new API call [HTable.incrementColumnValue], the process
> hangs. If I kill the process and later try to access the table records
> anywhere including "hbase shell" etc., even that process hangs.
> 1. "stop-hbase.sh" hangs as well and I have to kill the hbase processes

Please make a thread dump -- "% kill -QUIT PID" -- and pastebin what you
see.  I'd be interested in seeing why hbase won't go down.

> 2. restart the hbase using "start-hbase.sh"
> 3. hbase shell> count 't1' ---> throws an error that the table if offline
> 4. so had to enable 't1' and then work with the table.


Going by above, maybe something else is up in your hbase cluster?

Maybe, ensure all is well before you run your code by doing a few operations
with the shell on initial startup?

Your code doesn't have obvious errors on a quick glance.

Ensure your cluster is healthy before you run your own code, I'd suggest.


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