bxji commented on a change in pull request #4761: [TE] Centralized cache
proof-of-concept for anomaly detection via Couchbase
URL: https://github.com/apache/incubator-pinot/pull/4761#discussion_r341413281
##########
File path:
thirdeye/thirdeye-pinot/src/main/java/org/apache/pinot/thirdeye/detection/algorithm/DimensionWrapper.java
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@@ -238,6 +244,16 @@ public DetectionPipelineResult run() throws Exception {
this.config.getId(), nestedMetrics.size(),
MAX_DIMENSION_COMBINATIONS));
}
+ // don't use in-memory cache for dimension exploration, it will cause
thrashing
+ if (CacheConfig.useCentralizedCache()) {
+ if (this.cachingPeriodLookback >= 0) {
+ this.provider.fetchTimeseries(nestedMetrics.stream()
Review comment:
Yes, it's used to prefetch data for the detection and warm up the cache. It
can be slow depending on the number of dimension combinations we need to make.
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