hililiwei opened a new pull request, #6075:
URL: https://github.com/apache/iceberg/pull/6075
## What is the purpose of the change
Support for Changlog scanning in the new Flink Source(FLIP-27)
It can be turned on in the following ways:
```
SELECT * FROM tableName /*+ OPTIONS('scan-mode'='CHANGELOG_SCAN')*/
ScanContext scanContext =
ScanContext.builder()
.scanMode("CHANGELOG_SCAN")
......
.build();
```
## Brief change log
* Add a Reader for ChangeLog
* Refactor the Split
* Remove DataIterator
## Verifying this change
* Several test cases have been added
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