arina-ielchiieva commented on a change in pull request #1887: DRILL-7372:
MethodAnalyzer consumes too much memory
URL: https://github.com/apache/drill/pull/1887#discussion_r341099170
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/compile/bytecode/MethodAnalyzer.java
##########
@@ -174,14 +171,22 @@ public void initJumpTarget(int opcode, LabelNode target)
{
case IF_ICMPLE:
case IF_ACMPEQ:
case IF_ACMPNE:
+ case IFNULL:
case IFNONNULL:
// for the case when conditional block is handled, creates new
variables set
// to store local variables declared inside current conditional
block and
// stores its target LabelNode to restore previous variables set
after conditional block is ended
- localVariablesSet.push(new HashSet<>());
+ localVariablesSet.push(new BitSet());
labelsStack.push(target);
}
}
}
+
+ @Override
+ public void clearStack() {
+ super.clearStack();
Review comment:
Consider nullification or empty collections re-assignement
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