Hello,

We see that BulkOutputFormat fails to stream data from multiple reduce
instances that run on the same host.
We get the same error messages that issue
https://issues.apache.org/jira/browse/CASSANDRA-4223 tries to address.
Looks like (ip-adress + in_out_flag + atomic integer) is not unique
enough for a sessionId when we have multiple JVMs streaming from one
physical host.

We get the problem fixed by setting one reducer per machine in hadoop
config, but it's not an option we want to deploy.

Thanks,
Alexei Bakanov

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