Steven Zhen Wu created FLINK-21364:
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Summary: piggyback finishedSplitIds in RequestSplitEvent
Key: FLINK-21364
URL:
https://issues.apache.org/jira/browse/FLINK-21364 Project: Flink
Issue Type: Improvement
Components: Connectors / Common
Affects Versions: 1.12.1
Reporter: Steven Zhen Wu
For some split assignment strategy, the enumerator/assigner needs to track the completed splits to advance watermark for event time alignment or rough ordering. Right now, `RequestSplitEvent` for FLIP-27 source doesn't support pass-along of the `finishedSplitIds` info and hence we have to create our own custom source event type for Iceberg source.
Here is the proposal of add such optional info to `RequestSplitEvent`.
```
public RequestSplitEvent(
@Nullable String hostName,
@Nullable Collection<String> finishedSplitIds)
```
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