morningman commented on PR #15839:
URL: https://github.com/apache/doris/pull/15839#issuecomment-1401381547
Some questions and suggestions:
1. `builder_scanner` doesn't seem to be used? Only
`builder_scanner_memtable` is used?
2. Need to unify the inputs and outputs:
1. Inputs:
* header file in json and data file in parquet(can be orc or
other supported file format)
* In the code, the reading methods of different file systems
can be unified, and there is no need to use `isHDFS` to judge.
2. Outputs
* new header file in json and Doris segment data file
3. The final upload logic can be encapsulated without being limited to HDFS
4. I think we can generate a manifest file to save all output file list. So
that the downstream system can read it.
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