Looks similar to what was fixed by CASSANDRA-12740
<https://issues.apache.org/jira/browse/CASSANDRA-12740>, released in 3.10.

On Thu, Jul 13, 2017 at 5:43 PM, Micha <mich...@fantasymail.de> wrote:

> I use "copy from" to import a bunch of csv files, each with 1000000 rows
> (exported by "copy to" from another table)
>
> There is a chance that the copy from just hangs, after importing 9995000
> lines, doing nothing, waiting forever.
>
> Could this be a race in the copy code? I use NUMPROCESSES=6, in bash a
> "ps" shows 8 started cqlsh.py processes. For me it seems that all of the
> processes are waiting for the signal that the import is done, but they
> are all blocked. So they wait forever.
>
> Checking random records of the imported file indicate that it is
> completely imported.
>
> The logs show no errors.
>
> Any suggestions?
>
> Thanks,
>  Michael
>
>
>
>
>
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