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  1. Flink
  2. FLINK-5602

Migration with RocksDB job led to NPE for next checkpoint

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: 1.2.0, 1.3.0
    • Component/s: None
    • Labels:
      None

      Description

      When migrating a job with RocksDB I got the following Exception when the next checkpoint was triggered. This only happened once and I could not reproduce it ever since.

      Stefan Richter Maybe we can look over the code and check what could have failed here? I unfortunately don't have more available of the stack trace. I don't think that this will be very helpful will it?

      	at org.apache.flink.util.Preconditions.checkNotNull(Preconditions.java:58)
      	at org.apache.flink.runtime.state.KeyedBackendSerializationProxy$StateMetaInfo.<init>(KeyedBackendSerializationProxy.java:126)
      	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBSnapshotOperation.writeKVStateMetaData(RocksDBKeyedStateBackend.java:471)
      	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$RocksDBSnapshotOperation.writeDBSnapshot(RocksDBKeyedStateBackend.java:382)
      	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.performOperation(RocksDBKeyedStateBackend.java:280)
      	at org.apache.flink.contrib.streaming.state.RocksDBKeyedStateBackend$1.performOperation(RocksDBKeyedStateBackend.java:262)
      	at org.apache.flink.runtime.io.async.AbstractAsyncIOCallable.call(AbstractAsyncIOCallable.java:72)
      	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      	at org.apache.flink.util.FutureUtil.runIfNotDoneAndGet(FutureUtil.java:37)
      	... 6 more
      

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              • Assignee:
                srichter Stefan Richter
                Reporter:
                uce Ufuk Celebi
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                • Created:
                  Updated:
                  Resolved: