[FLINK-3450] Duplicate TypeSerializer in StateDescriptor.writeObject - #1686
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aljoscha wants to merge 1 commit into
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[FLINK-3450] Duplicate TypeSerializer in StateDescriptor.writeObject#1686aljoscha wants to merge 1 commit into
aljoscha wants to merge 1 commit into
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The StateDescriptor can be serializer asynchronously in case of asynchronous checkpoints. In that case two threads would try to concurrently use the TypeSerializer: The normal state updating and the checkpoint serialization. If the TypeSerializer is a KryoSerializer this can lead to problems. Therefore the need to duplicate it before using in "writeObject".
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The StateDescriptor can be serializer asynchronously in case of
asynchronous checkpoints. In that case two threads would try to
concurrently use the TypeSerializer: The normal state updating and the
checkpoint serialization. If the TypeSerializer is a KryoSerializer this
can lead to problems. Therefore the need to duplicate it before using in
"writeObject".