Zhijiang created FLINK-17413:
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Summary: Remove redundant states from ThreadSafeUnaligner
Key: FLINK-17413
URL: https://issues.apache.org/jira/browse/FLINK-17413
Project: Flink
Issue Type: Sub-task
Components: Runtime / Checkpointing
Reporter: Zhijiang
Assignee: Zhijiang
In RemoteInputChannel, we already have the states of
`lastRequestedCheckpointId` and `receivedCheckpointId` to control whether the
received buffer should be notified to unaligner component.
In current ThreadSafeUnaligner, the variable `storeNewBuffers` is also used for
similar purpose to deciding whether the notified buffer should be written into
persister. In other words, as long as the `RemoteInputChannel` decides to
notify this received buffer, it should be always needed to spill. So we can
remove the variable `storeNewBuffers` from ThreadSafeUnaligner completely.
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