Jesus Camacho Rodriguez created HIVE-13533:
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Summary: Remove AST dump
Key: HIVE-13533
URL: https://issues.apache.org/jira/browse/HIVE-13533
Project: Hive
Issue Type: Bug
Affects Versions: 2.1.0
Reporter: Jesus Camacho Rodriguez
Assignee: Jesus Camacho Rodriguez
For very large queries, dumping the AST can lead to OOM errors. Currently there
are two places where we dump the AST:
- CalcitePlanner if we are running in DEBUG mode (line 300).
- ExplainTask if we use extended explain (line 179).
I guess the original reason to add the dump was to check whether the AST
conversion from CBO was working properly, but I think we are past that stage
now.
We will remove the logic to dump the AST in explain extended. For debug mode in
CalcitePlanner, we will lower the level to LOG.TRACE.
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