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Adam Holmberg commented on CASSANDRA-9302:
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Pure python murmur3 is available on a branch
[here|https://github.com/datastax/python-driver/tree/363]. Ready for Python 2.
Still going to look at Python 3 and some possible optimizations.
I hope nobody is surprised that the Python implementation is much slower than
the C implementation. There is a fair amount of bit twiddling while fighting
the Python integer system to mimic fixed width types and logical shifts.
Hopefully we can amortize this with batching by partition and/or giving it more
processes.
Has there been discussion anywhere about implementing a loader on the Java
driver, now that it's bundled with the server?
> Optimize cqlsh COPY FROM, part 3
> --------------------------------
>
> Key: CASSANDRA-9302
> URL: https://issues.apache.org/jira/browse/CASSANDRA-9302
> Project: Cassandra
> Issue Type: Improvement
> Components: Tools
> Reporter: Jonathan Ellis
> Assignee: David Kua
> Fix For: 2.1.x
>
>
> We've had some discussion moving to Spark CSV import for bulk load in 3.x,
> but people need a good bulk load tool now. One option is to add a separate
> Java bulk load tool (CASSANDRA-9048), but if we can match that performance
> from cqlsh I would prefer to leave COPY FROM as the preferred option to which
> we point people, rather than adding more tools that need to be supported
> indefinitely.
> Previous work on COPY FROM optimization was done in CASSANDRA-7405 and
> CASSANDRA-8225.
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