[jira] [Created] (FLINK-5730) User can concurrently modify state metadata of RocksDB asynchronous snapshots

["Stefan Richter (JIRA)" <ji...@apache.org>]

Stefan Richter created FLINK-5730:
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             Summary: User can concurrently modify state metadata of RocksDB asynchronous snapshots
                 Key: FLINK-5730
                 URL: https://issues.apache.org/jira/browse/FLINK-5730
             Project: Flink
          Issue Type: Bug
            Reporter: Stefan Richter


The current implementation of asynchronous snapshots in RocksDB iterates the original state metadata structures as part of the asynchronous snapshot. Users could potentially modify the state metadata concurrently (e.g. by registering a new state while the snapshot is running), thereby corrupting the metadata.

For the way most users are registering their states (at the start of the task), this is not a problem. However, if state is conditionally registered at some later point in time this can be problematic.



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