zachjsh commented on code in PR #12443:
URL: https://github.com/apache/druid/pull/12443#discussion_r869621970
##########
indexing-service/src/main/java/org/apache/druid/indexing/common/task/batch/parallel/ParallelIndexSupervisorTask.java:
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@@ -703,6 +704,10 @@ TaskStatus runHashPartitionMultiPhaseParallel(TaskToolbox
toolbox) throws Except
cardinalityRunner.getReports().values(),
effectiveMaxRowsPerSegment
);
+
+ // This is for potential debugging in case we suspect bad estimation
of cardinalities etc,
+ LOG.debug("intervalToNumShards: %s", intervalToNumShards.toString());
+
Review Comment:
How often would this log message be hit? We rarely turn on debug logging
until after an issue is seen. If its loggign here wont be too much, could we
move to info level?
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