Github user rmetzger commented on the pull request:
https://github.com/apache/flink/pull/1771#issuecomment-217171304
I just tried the PR, but the recovery after a failure doesn't seem to work:
```
java.lang.RuntimeException: Error triggering a checkpoint as the result of
receiving checkpoint barrier
at
org.apache.flink.streaming.runtime.tasks.StreamTask$2.onEvent(StreamTask.java:681)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$2.onEvent(StreamTask.java:674)
at
org.apache.flink.streaming.runtime.io.BarrierBuffer.processBarrier(BarrierBuffer.java:203)
at
org.apache.flink.streaming.runtime.io.BarrierBuffer.getNextNonBlocked(BarrierBuffer.java:129)
at
org.apache.flink.streaming.runtime.io.StreamInputProcessor.processInput(StreamInputProcessor.java:175)
at
org.apache.flink.streaming.runtime.tasks.OneInputStreamTask.run(OneInputStreamTask.java:65)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:224)
at org.apache.flink.runtime.taskmanager.Task.run(Task.java:559)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.RuntimeException: Failed to fetch state handle size
at
org.apache.flink.runtime.taskmanager.RuntimeEnvironment.acknowledgeCheckpoint(RuntimeEnvironment.java:234)
at
org.apache.flink.streaming.runtime.tasks.StreamTask.triggerCheckpoint(StreamTask.java:511)
at
org.apache.flink.streaming.runtime.tasks.StreamTask$2.onEvent(StreamTask.java:678)
... 8 more
Caused by: java.io.FileNotFoundException: File does not exist:
hdfs://nameservice1/user/robert/cassandra-fs/e70d0b78b7875877f42a8ebfba463f14/chk-0/9f892bc0-b5e2-484f-a981-6e666e7ad897
at
org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1122)
at
org.apache.hadoop.hdfs.DistributedFileSystem$18.doCall(DistributedFileSystem.java:1114)
at
org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at
org.apache.hadoop.hdfs.DistributedFileSystem.getFileStatus(DistributedFileSystem.java:1114)
at
org.apache.flink.runtime.fs.hdfs.HadoopFileSystem.getFileStatus(HadoopFileSystem.java:351)
at
org.apache.flink.runtime.state.filesystem.AbstractFileStateHandle.getFileSize(AbstractFileStateHandle.java:93)
at
org.apache.flink.runtime.state.filesystem.FileStreamStateHandle.getStateSize(FileStreamStateHandle.java:58)
at
org.apache.flink.runtime.state.AbstractStateBackend$DataInputViewHandle.getStateSize(AbstractStateBackend.java:428)
at
org.apache.flink.streaming.runtime.operators.GenericAtLeastOnceSink$ExactlyOnceState.getStateSize(GenericAtLeastOnceSink.java:190)
at
org.apache.flink.streaming.runtime.tasks.StreamTaskStateList.getStateSize(StreamTaskStateList.java:81)
at
org.apache.flink.runtime.taskmanager.RuntimeEnvironment.acknowledgeCheckpoint(RuntimeEnvironment.java:231)
... 10 more
```
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