aokolnychyi opened a new pull request, #9365:
URL: https://github.com/apache/iceberg/pull/9365
This PR migrates `SortingPositionOnlyDeleteWriter` to use `CharSequenceMap`
to simplify the code. The new solution is essentially the same in terms of
functionality and performance.
**Before**
```
Benchmark
Mode Cnt Score Error Units
ParquetWritersBenchmark.writeUnpartitionedClusteredPositionDeleteWriter
ss 5 1.682 ± 0.242 s/op
ParquetWritersBenchmark.writeUnpartitionedFanoutPositionDeleteWriter
ss 5 2.949 ± 0.092 s/op
ParquetWritersBenchmark.writeUnpartitionedFanoutPositionDeleteWriterShuffled
ss 5 3.428 ± 0.089 s/op
```
**After**
```
Benchmark
Mode Cnt Score Error Units
ParquetWritersBenchmark.writeUnpartitionedClusteredPositionDeleteWriter
ss 5 1.608 ± 0.122 s/op
ParquetWritersBenchmark.writeUnpartitionedFanoutPositionDeleteWriter
ss 5 2.998 ± 0.061 s/op
ParquetWritersBenchmark.writeUnpartitionedFanoutPositionDeleteWriterShuffled
ss 5 3.209 ± 0.480 s/op
```
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