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https://issues.apache.org/jira/browse/FLINK-9175?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16442101#comment-16442101
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godfrey johnson commented on FLINK-9175:
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[~kkl0u] I changed to Flink 1.4.2 with incremental checkpoints enabled, and had
the same problem. Backpressure is ok.
> Flink CEP with Checkpointing alway failed
> -----------------------------------------
>
> Key: FLINK-9175
> URL: https://issues.apache.org/jira/browse/FLINK-9175
> Project: Flink
> Issue Type: Improvement
> Components: State Backends, Checkpointing
> Affects Versions: 1.4.1
> Environment: * Checkpoint Interval: 1min
> * Checkpoint Timeout: 2min
> * Checkpoint Pause: 5s
> * Checkpoint Concurrent: 1
> * Checkpoint Mode: EXACTLY_ONCE
> * AllowedLateness: 100s
> * CEP within time: 30s
> * Kafka QPS：10,000
> * Source Parallelism: 16
>
> Reporter: godfrey johnson
> Priority: Major
> Attachments: checkpoint failed.png, dataStream.png
>
>
> I used RocksDBStateBackend to checkpoint for my job, and it always failed for
> timeout. But when I closed CEP, only keeped the source operator, which was
> working fine. And FsStateBackend was also finished checkpoint quickly without
> timeout.
> !dataStream.png!
>
>
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