Suxing Lee created FLINK-11887:
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Summary: Operator's Latency Metrics continues to increase
Key: FLINK-11887
URL: https://issues.apache.org/jira/browse/FLINK-11887
Project: Flink
Issue Type: Bug
Components: Runtime / Metrics
Affects Versions: 1.6.3
Reporter: Suxing Lee
Attachments:
flink_taskmanager_job_latency_source_id_operator_id_operator_subtask_index_1_latency.png
The operator's latency time is increased by approximately 2.7 minutes per day
(see the attached).
We compute the latency by System.currentTimeMillis - marker.getMarkedTime.
There is no guarantee that System.currentTimeMillis and System.nanoTime don't
drift apart.
If a GC pause or linux preemptive scheduling happenes, this should affect
latency metrics.
Latency metrics drift away from their initial values with time(verify this
result via the JVM Heap Dump).
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