Steven Zhen Wu created FLINK-20174:
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Summary: Make BulkFormat more extensible
Key: FLINK-20174
URL: https://issues.apache.org/jira/browse/FLINK-20174
Project: Flink
Issue Type: Improvement
Components: Connectors / FileSystem
Affects Versions: 1.12.0
Reporter: Steven Zhen Wu
Right now, BulkFormat has the generic `SpitT` type extending from
`FileSourceSplit`. We can make BulkFormat taking the generic `SplitT` type
extending from `SourceSplit`. This way, IcebergSourceSplit doesn't have to
extend from `FileSourceSplit` and Iceberg source can reuse this BulkFormat
interface as [~lzljs3620320] suggested. This allows Iceberg source to take
advantages high-performant `ParquetVectorizedInputFormat` provided by Flink.
[~sewen] [~lzljs3620320] if you are onboard with the change, I would be happy
to submit a PR. Although there is a question if it is ok to make the API change
after 1.12.0 code freeze?
The other related question is the two `createReader` and `restoreReader` APIs.
I understand the motivation. I am just wondering if the separation is
necessary. if the SplitT has the CheckpointedLocation, the seek operation can
be handled internal to `createReader`.
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