Yangze Guo created FLINK-14951:
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Summary: State TTL backend end-to-end test fail when taskManager has multiple slot
Key: FLINK-14951
URL:
https://issues.apache.org/jira/browse/FLINK-14951 Project: Flink
Issue Type: Bug
Components: Tests
Environment: centos 7
java 8
Reporter: Yangze Guo
When I run flink end to end tests, the State TTL backend tests fail. The log of TaskManager show below:
2019-11-26 20:22:03,837 INFO org.apache.flink.runtime.taskmanager.Task - TtlVerifyUpdateFunction -> Sink: PrintFailedVerifications (3/3) (23f969ddb3e13fcdd3ba9823f50b0eab) switched from RUNNING to FAILED.
java.lang.IllegalStateException: Timestamps before and after the update do not match.
at org.apache.flink.util.Preconditions.checkState(Preconditions.java:195)
at org.apache.flink.streaming.tests.TtlVerifyUpdateFunction.performUpdate(TtlVerifyUpdateFunction.java:124)
at org.apache.flink.streaming.tests.TtlVerifyUpdateFunction.generateUpdateAndVerificationContext(TtlVerifyUpdateFunction.java:101)
at org.apache.flink.streaming.tests.TtlVerifyUpdateFunction.flatMap(TtlVerifyUpdateFunction.java:88)
at org.apache.flink.streaming.tests.TtlVerifyUpdateFunction.flatMap(TtlVerifyUpdateFunction.java:67)
at org.apache.flink.streaming.api.operators.StreamFlatMap.processElement(StreamFlatMap.java:50)
at org.apache.flink.streaming.runtime.tasks.OneInputStreamTask$StreamTaskNetworkOutput.emitRecord(OneInputStreamTask.java:173)
at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.processElement(StreamTaskNetworkInput.java:151)
at org.apache.flink.streaming.runtime.io.StreamTaskNetworkInput.emitNext(StreamTaskNetworkInput.java:128)
at org.apache.flink.streaming.runtime.io.StreamOneInputProcessor.processInput(StreamOneInputProcessor.java:69)
at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:284)
at org.apache.flink.streaming.runtime.tasks.mailbox.MailboxProcessor.runMailboxLoop(MailboxProcessor.java:155)
at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:445)
at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:702)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:527)
at java.lang.Thread.run(Thread.java:834)
It is cause by the MonotonicTTLTimeProvider:freeze and MonotonicTTLTimeProvider:unfreezeTime called by multithread when taskmanager.numberOfTaskSlots set greater than 1. We could set it to 1 in test_stream_state_ttl.sh. That will fix the problem.
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