m-trieu commented on code in PR #33187:
URL: https://github.com/apache/beam/pull/33187#discussion_r1859101106
##########
runners/google-cloud-dataflow-java/worker/src/main/java/org/apache/beam/runners/dataflow/worker/streaming/harness/FanOutStreamingEngineWorkerHarness.java:
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@@ -195,7 +199,10 @@ static FanOutStreamingEngineWorkerHarness forTesting(
getWorkBudgetDistributor,
dispatcherClient,
workCommitterFactory,
- getDataMetricTracker);
+ getDataMetricTracker,
+ // Run the workerMetadataConsumer on the direct calling thread to
make testing more
+ // deterministic.
Review Comment:
In prod, this is to hand off the task from a thread that (may) perform
network IO. Not needed in testing and can logically be called in line
Added comment.
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