Ufuk Celebi created FLINK-5602:
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Summary: Migration with RocksDB job led to NPE for next checkpoint
Key: FLINK-5602
URL: https://issues.apache.org/jira/browse/FLINK-5602
Project: Flink
Issue Type: Bug
Reporter: Ufuk Celebi
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.
[~stefanrichte...@gmail.com] 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?
{code}
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
{code}
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