arina-ielchiieva commented on a change in pull request #1572: DRILL-6879: Show
warnings for potential performance issues
URL: https://github.com/apache/drill/pull/1572#discussion_r241387866
##########
File path:
exec/java-exec/src/main/java/org/apache/drill/exec/server/rest/profile/OperatorWrapper.java
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@@ -208,15 +229,46 @@ public void addSummary(TableBuilder tb, HashMap<String,
Long> majorFragmentBusyT
tb.appendNanos(Math.round(setupSum / size));
tb.appendNanos(longSetup.getLeft().getSetupNanos());
+ HashMap<String, String> timeSkewMap = null;
final ImmutablePair<OperatorProfile, Integer> longProcess =
Collections.max(opList, Comparators.processTime);
- tb.appendNanos(Math.round(processSum / size));
- tb.appendNanos(longProcess.getLeft().getProcessNanos());
+ long avgProcTime = Math.round(processSum / size);
+ tb.appendNanos(avgProcTime);
+ long maxProcTime = longProcess.getLeft().getProcessNanos();
+ double maxSkew = (avgProcTime > 0) ?
maxProcTime/Double.valueOf(avgProcTime) : 0.0d;
+ if (avgProcTime > TimeUnit.SECONDS.toNanos(timeSkewMin) && maxSkew >
timeSkewRatio ) {
+ timeSkewMap = new HashMap<String, String>();
Review comment:
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