WenDing-Y commented on PR #5906:
URL: https://github.com/apache/paimon/pull/5906#issuecomment-3095451764
> Hi @WenDing-Y
>
> Deletion-Vectors can not be changed for the table with data. Only can be
changed after full-compaction.
>
> And your fix has problem. Let dv table has bad query performance.
> Hi @WenDing-Y
>
> Deletion-Vectors can not be changed for the table with data. Only can be
changed after full-compaction.
>
> And your fix has problem. Let dv table has bad query performance.
Deletion vectors do not modify the data itself, but they do change the way
data is read.
where deletionVectorsEnabled is true，if same ID are present in different
Parquet files,The result may be duplicated.
```
if (rawConvertible
&& (deletionVectorsEnabled || mergeEngine == FIRST_ROW ||
oneLevel)) {
Function<DataFileMeta, Long> weightFunc =
file -> Math.max(file.fileSize(), openFileCost);
return BinPacking.packForOrdered(files, weightFunc,
targetSplitSize).stream()
.map(SplitGroup::rawConvertibleGroup)
.collect(Collectors.toList());
}
```
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