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From Dave Revell <>
Subject Stdin/stdout glue for external processes
Date Mon, 10 Mar 2014 19:19:51 GMT
Hi all,

We're considering using Samza for our high-throughput stream processing
workload, but we don't want to rewrite all of our existing Go code. We're
considering writing something analogous to Hadoop Streaming, where the
Samza consumer would start an external process and communicate with it by
passing protobufs via stdin/stdout. We like Samza's fault tolerance, state
management, and load balancing features and don't want to rewrite them.

This possibility is mentioned in the documentation (,
search for "stdin") as something that might exist some day. My

1. Is anyone working on this, or planning to? I couldn't find any related
2. Any advice for implementing this? Are there any challenges that might
not be obvious?
3. Should we try to merge this upstream?

Thanks a bunch,

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