himanshug commented on a change in pull request #7716: AggregatorUtil should
cache parsed expression to avoid memory problem (OOM/FGC) when Expression is
used in metricsSpec
URL: https://github.com/apache/incubator-druid/pull/7716#discussion_r286191367
##########
File path: core/src/main/java/org/apache/druid/math/expr/Parser.java
##########
@@ -75,6 +75,9 @@ public static Expr parse(String in, ExprMacroTable
macroTable)
@VisibleForTesting
static Expr parse(String in, ExprMacroTable macroTable, boolean withFlatten)
{
+ if (log.isDebugEnabled()) {
Review comment:
also, not sure if you really need this log at all.
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