akshayrai commented on a change in pull request #4003: [TE] Fix
ArrayIndexOutOfBoundsException; Wrap replay endpoint and ret…
URL: https://github.com/apache/incubator-pinot/pull/4003#discussion_r268333586
##########
File path:
thirdeye/thirdeye-pinot/src/main/java/org/apache/pinot/thirdeye/detection/components/PercentageChangeRuleAnomalyFilter.java
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@@ -67,6 +70,11 @@ public boolean isQualified(MergedAnomalyResultDTO anomaly) {
Map<MetricSlice, DataFrame> aggregates =
this.dataFetcher.fetchData(new
InputDataSpec().withAggregateSlices(slices)).getAggregates();
+ if (aggregates.get(currentSlice).isEmpty() ||
aggregates.get(baselineSlice).isEmpty()) {
+ LOG.warn("Unable to fetch data for current or baseline slice for anomaly
{}. start = {} end = {} filters = {}",
+ anomaly.getId(), anomaly.getStartTime(), anomaly.getEndTime(),
me.getFilters());
+ return false;
Review comment:
Ideally, we shouldn't get this error. If we do get it, then displaying the
anomaly can mislead the users. Returning true would mean that the anomaly
passed the filter when in fact it didn't, right?
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