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From Dmitriy Lyfar <dly...@gmail.com>
Subject Re: Problems with write performance (25kb rows)
Date Tue, 12 Jan 2010 13:36:38 GMT
Hi Stack,

I have following configuration: http://pastebin.com/m3a471fab
so I'll remove incremental mode option.

2010/1/11 stack <stack@duboce.net>

> What do you have for your HBASE_OPTS in conf/hbase-env.sh Dmitry?
>
> Remove this:
>
> -XX:+CMSIncrementalMode
>
> ... if its present on your HBASE_OPTS.
>
> Change your hbase.zookeeper.property.tickTime from 2 to 3 so that zk
> session
> goes for longer (See the comment in the head of the 0.20 branch for
> explaination).
>

Ok, I'll change.


>
> What else is running on the machines where the regionserver times out its
> session w/ zk?  Anything?  The uploader?
>

Nothing, just hadoop datanode, tasktracker and regionserver (no zk).


>
> You've set the ulimit > 1024 and xceivers?  Right (I don't see that in your
> old messages)
>

As for ulimit I have 32K. But did not change xceivers, I will try and report
about results, thanks.
Btw, is 2Gb heap size is enough for hadoop in such configuration?

-- 
Regards, Lyfar Dmitriy

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