Tim Armstrong created IMPALA-8659:
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Summary: Allow self-RPCs for KRPC to go via loopback
Key: IMPALA-8659
URL: https://issues.apache.org/jira/browse/IMPALA-8659
Project: IMPALA
Issue Type: Improvement
Components: Distributed Exec
Reporter: Tim Armstrong
Assignee: Tim Armstrong
Our KRPC implementation currently sends all RPCs, even those to the current
host, through a single external IP. There are some cases why we might not want
to do this. The immediately motivating issue for me is bugs in some tooling
that cause self-RPCs on external IPs to fail. See
https://github.com/istio/istio/issues/12551.
There are really two parts to this:
* Listening on the 127.0.0.1 interface
* Intercepting RPCs to the external IP and sending them to 127.0.0.1 instead.
An alternative solution would be to completely bypass the RPC stack, but that
would be far more invasive.
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