> For a project I want to retrieve the Calcite RelNodes during the execution > of the queries (perhaps even before query optimisation if possible) and > perform some analysis on those RelNodes. ... > Is this also the preferred approach to get access to these calcite logical > plans?
Jesus added an "explain CBO" in master which I'm using - this isn't exactly what you need, but it allowed me to write something like this. https://github.com/apache/hive/blob/master/ql/src/test/results/clientpositive/perf/tez/cbo_query4.q.out + https://github.com/t3rmin4t0r/lipwig/blob/master/calcite2tree.py I'm not entirely happy with that format - but it exists. I'm going to take a guess about your question and say that you need to take a look at this feature-in-progress. https://issues.apache.org/jira/browse/HIVE-21133 Cheers, Gopal
