Ufuk Celebi created FLINK-4894:
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Summary: Don't block on buffer request after broadcastEvent
Key: FLINK-4894
URL: https://issues.apache.org/jira/browse/FLINK-4894
Project: Flink
Issue Type: Improvement
Reporter: Ufuk Celebi
After broadcasting an event (like the checkpoint barrier), the record writer
might block on a buffer request although that buffer will only be needed on the
next write on that channel.
Instead of assuming that each serializer has a buffer set, we can change the
logic in the writer to request the buffer when it requires one.
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