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https://issues.apache.org/jira/browse/FLINK-39521?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rui Fan reassigned FLINK-39521:
-------------------------------
Assignee: Rui Fan
> Add OutputWriter for post-filter record dispatch
> ------------------------------------------------
>
> Key: FLINK-39521
> URL: https://issues.apache.org/jira/browse/FLINK-39521
> Project: Flink
> Issue Type: Sub-task
> Reporter: Rui Fan
> Assignee: Rui Fan
> Priority: Major
>
> Introduces `OutputWriter` / `OutputWriterImpl`, which routes post-filter
> bytes into one of three paths per `write()`: fill the active Network Buffer
> (P1), spill to disk when no buffer is available (P2), or eagerly drain disk
> back into a buffer when one frees up (P3). `flush()` seals the active buffer;
> `close()` performs a blocking drain to exhaust remaining disk data;
> `checkpointPendingEntries()` streams all queued disk entries into a
> checkpoint in one sequential pass.
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