Tim Armstrong created IMPALA-7164:
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Summary: Define public API for RuntimeProfile
Key: IMPALA-7164
URL: https://issues.apache.org/jira/browse/IMPALA-7164
Project: IMPALA
Issue Type: Improvement
Components: Backend
Reporter: Tim Armstrong
Currently the only public API for the runtime profile is the Thrift definition.
The exact layout and counters are all implementation-dependent and subject to
change. People are trying to build tools that consume runtime profiles and
process them, but that's hard since the counters can change from version to
version and sometimes the semantics change.
I think we need to figure out which things are part of the public API, validate
that they make sense and document them clearly. We should also clearly document
that things outside of this public API are subject to change without notice. I
don't think the public API necessarily needs to be "porcelain", but we should
generally try to avoid unnecessary changes and mention any changes in release
notes etc.
We could start simple and just collect "public" counter names in a module and
comment each of them.
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