[jira] [Created] (IMPALA-9865) Utility to pretty-print thrift profiles at various levels

["Tim Armstrong (Jira)" <ji...@apache.org>]

Tim Armstrong created IMPALA-9865:
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             Summary: Utility to pretty-print thrift profiles at various levels
                 Key: IMPALA-9865
                 URL: https://issues.apache.org/jira/browse/IMPALA-9865
             Project: IMPALA
          Issue Type: Sub-task
          Components: Backend
            Reporter: Tim Armstrong
            Assignee: Tim Armstrong


The prototyping work in IMPALA-9382 revealed some hard trade-offs between having a full-fidelity text profile and readability.

We want to have a text profile with less information by default so that it is more readable, and rely on the thrift profile for more detailed debugging. This would be easier if we provided a utility that can pretty-print a thrift profile at different levels of detail.

This JIRA is to reduce the default level of pretty-printing for aggregated profiles, but provide a utility that can dump both the basic and full versions. My thought is to start off with the same 4 levels as explain, but maybe only implement 2 levels to start off with - basic and extended.

The utility should be able to handle the same cases as bin/parse-thrift-profile.py (profile log and single profile in a file) and maybe print only a specified query from a  profile log.  We can use the DeserializeFromArchiveString() method that was removed in IMPALA-9381, then pretty-print the deserialised profile.



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