FrankChen021 commented on code in PR #19235:
URL: https://github.com/apache/druid/pull/19235#discussion_r3173374415
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processing/src/main/java/org/apache/druid/query/ChainedExecutionQueryRunner.java:
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@@ -85,6 +88,13 @@ public Sequence<T> run(final QueryPlus<T> queryPlus, final
ResponseContext respo
final QueryContext context = query.context();
final boolean usePerSegmentTimeout = context.usePerSegmentTimeout();
final long perSegmentTimeout = context.getPerSegmentTimeout();
+ final int samplingWindow = context.getPerSegmentSamplingWindow();
+ final long queryStartNanos = System.nanoTime();
Review Comment:
Thanks, agreed. The current PR head still captures `queryStartNanos` in
`run()`, so moving it into `make()` immediately before the futures are
submitted/listeners are registered should address this by measuring only the
actual sequence consumption/execution window.
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