xiaohui-sun commented on a change in pull request #4217: [TE] distribute
detection and notification tasks
URL: https://github.com/apache/incubator-pinot/pull/4217#discussion_r285312156
##########
File path:
thirdeye/thirdeye-pinot/src/main/java/org/apache/pinot/thirdeye/detection/yaml/CompositePipelineConfigTranslator.java
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@@ -379,16 +380,24 @@ private void fillInDetectorWrapperProperties(Map<String,
Object> properties, Map
return properties;
}
+ // Default schedule:
+ // minute granularity: every 15 minutes, starts at 0 minute
+ // hourly: every hour, starts at 0 minute
+ // daily: every day, starts at 2 pm UTC
+ // others: every day, start at 12 am UTC
private String buildCron() {
+ // starts at random second to reduce task spike
Review comment:
From database log all tasks are executed within the first three seconds
which maps to the spike in mysql write spike since the task object is
serialized in the database. We should distribute it.
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