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Jeremy Hanna commented on CASSANDRA-2052:
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Based on discussion in IRC, it sounds like we just need to communicate good
settings to users for when they're configuring and trying out their cluster.
So a combination of batch size and rpc timeout tuning along with potentially
separating out the nodes into a virtual datacenter with the network topology
strategy so that you don't hit your nodes with batch processing jobs that
really need to be responsive for oltp.
I can update the docs on the wiki and we should probably update the readme in
the various hadoop contrib modules to point to the hadoop support wiki page as
well.
> Add configurable retry count to Hadoop code
> -------------------------------------------
>
> Key: CASSANDRA-2052
> URL: https://issues.apache.org/jira/browse/CASSANDRA-2052
> Project: Cassandra
> Issue Type: Improvement
> Components: Hadoop
> Affects Versions: 0.6.9, 0.7.0
> Reporter: Jeremy Hanna
>
> The Hadoop integration code doesn't do a retry if it times out. Often people
> have to tune the batch size and the rpc timeout in order to get it to work.
> We should probably have a configurable timeout in there (credit to Jairam -
> http://www.mail-archive.com/[email protected]/msg08938.html) so that
> it doesn't just fail the job with a timeout exception.
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