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https://issues.apache.org/jira/browse/FLINK-6321?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Tzu-Li (Gordon) Tai resolved FLINK-6321.
----------------------------------------
    Resolution: Fixed

> RocksDB state backend Checkpointing is not working with KeyedCEP.
> -----------------------------------------------------------------
>
>                 Key: FLINK-6321
>                 URL: https://issues.apache.org/jira/browse/FLINK-6321
>             Project: Flink
>          Issue Type: Sub-task
>          Components: CEP
>    Affects Versions: 1.2.0
>         Environment: yarn-cluster, RocksDB State backend, Checkpointing every 
> 1000 ms
>            Reporter: Shashank Agarwal
>            Assignee: Kostas Kloudas
>            Priority: Blocker
>             Fix For: 1.5.0, 1.4.1
>
>
> Checkpointing is not working with RocksDBStateBackend when using CEP. It's 
> working fine with FsStateBackend and MemoryStateBackend. Application failing 
> every-time.
> {code}
> 04/18/2017 21:53:20   Job execution switched to status FAILING.
> AsynchronousException{java.lang.Exception: Could not materialize checkpoint 
> 46 for operator KeyedCEPPatternOperator -> Map (1/4).}
>       at 
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:980)
>       at 
> java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
>       at java.util.concurrent.FutureTask.run(FutureTask.java:266)
>       at 
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
>       at 
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
>       at java.lang.Thread.run(Thread.java:745)
> Caused by: java.lang.Exception: Could not materialize checkpoint 46 for 
> operator KeyedCEPPatternOperator -> Map (1/4).
>       ... 6 more
> Caused by: java.util.concurrent.CancellationException
>       at java.util.concurrent.FutureTask.report(FutureTask.java:121)
>       at java.util.concurrent.FutureTask.get(FutureTask.java:192)
>       at 
> org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:40)
>       at 
> org.apache.flink.streaming.runtime.tasks.StreamTask$AsyncCheckpointRunnable.run(StreamTask.java:915)
>       ... 5 more
> {code}



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