Daniel Glöckner created CALCITE-5227:
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Summary: Janino upgrade breaks SELECTs with many projects causing
JVM crashes
Key: CALCITE-5227
URL: https://issues.apache.org/jira/browse/CALCITE-5227
Project: Calcite
Issue Type: Bug
Affects Versions: 1.30.0
Reporter: Daniel Glöckner
In our case we have SELECTs with > 1000 project fields. You might say this is a
bit crazy but this is how our data model looks like ;)
We recently upgraded to Calcite 1.30 and noticed JVM crashes for such SELECTs.
After thorough analysis we found that the byte code produced by newer Janino
versions is 350 times larger compared to the byte code produced by javac.
I created a unit test to reproduce the issue in Calcite code base:
https://github.com/apache/calcite/commit/f4d4815dff5537c56b34b36794c71d7a9829eec6
The Janino issue is tracked here:
https://github.com/janino-compiler/janino/issues/174
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