Ben Sidhom created BEAM-3673:
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Summary: FlinkRunner: Harness manager for connecting operators to
SDK Harnesses
Key: BEAM-3673
URL: https://issues.apache.org/jira/browse/BEAM-3673
Project: Beam
Issue Type: Sub-task
Components: runner-flink
Reporter: Ben Sidhom
Assignee: Aljoscha Krettek
SDK harnesses require a common set of gRPC services to operate. The role of the
harness manager is to multiplex data streams and auxiliary data between SDK
environments and operators within a given job.
Note that multiple operators may communicate with a single SDK environment to
amortize container initialization cost. Environments are _not_ shared between
different jobs.
The initial implementation will shell out to local docker, but the harness
manager should eventually support working with externally-managed environments
(e.g., created by Kubernetes).
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