scwhittle commented on a change in pull request #13861:
URL: https://github.com/apache/beam/pull/13861#discussion_r571973144
##########
File path:
runners/core-java/src/main/java/org/apache/beam/runners/core/metrics/ExecutionStateSampler.java
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@@ -36,8 +36,7 @@
/** Monitors the execution of one or more execution threads. */
public class ExecutionStateSampler {
- private final ConcurrentSkipListSet<ExecutionStateTracker> activeTrackers =
- new ConcurrentSkipListSet<>();
+ private final HashSet<ExecutionStateTracker> activeTrackers = new
HashSet<>();
Review comment:
Thanks! I forgot about the Java annotations.
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