zhijiangW commented on a change in pull request #10083:
[FLINK-14472][runtime]Implement back-pressure monitor with non-blocking outputs.
URL: https://github.com/apache/flink/pull/10083#discussion_r344000979
##########
File path:
flink-runtime/src/main/java/org/apache/flink/runtime/rest/handler/legacy/backpressure/BackPressureStatsTrackerImpl.java
##########
@@ -157,70 +112,44 @@ public long getCleanUpInterval() {
synchronized (lock) {
final OperatorBackPressureStats stats =
operatorStatsCache.getIfPresent(vertex);
if (stats == null || backPressureStatsRefreshInterval
<= System.currentTimeMillis() - stats.getEndTimestamp()) {
- triggerStackTraceSampleInternal(vertex);
+ triggerBackPressureRequestInternal(vertex);
}
return Optional.ofNullable(stats);
}
}
/**
- * Triggers a stack trace sample for a operator to gather the back
pressure
- * statistics. If there is a sample in progress for the operator, the
call
+ * Triggers a back pressure request for a operator to gather the back
pressure
Review comment:
operator -> vertex
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