j7nhai opened a new issue, #7658:
URL: https://github.com/apache/incubator-gluten/issues/7658
### Backend
VL (Velox)
### Bug description
```
Current config settings:
spark.gluten.memory.offHeap.size.in.bytes=15.0 GiB
spark.gluten.memory.task.offHeap.size.in.bytes=3.8 GiB
spark.gluten.memory.conservative.task.offHeap.size.in.bytes=1920.0 MiB
spark.memory.offHeap.enabled=true
spark.gluten.memory.dynamic.offHeap.sizing.enabled=false
Memory consumer stats:
Task.30233:
Current used bytes: 3.7 GiB, peak bytes: N/A
+- org.apache.spark.shuffle.sort.ShuffleExternalSorter@73e80a06:
Current used bytes: 3.7 GiB, peak bytes: N/A
\- Gluten.Tree.202:
Current used bytes: 25.0 MiB, peak bytes: 112.0 MiB
\- root.202:
Current used bytes: 25.0 MiB, peak bytes: 112.0 MiB
+- ColumnarToRow.201:
Current used bytes: 16.0 MiB, peak bytes: 16.0 MiB
\- single: Current used
bytes: 16.0 MiB, peak bytes: 16.0 MiB
+- root: Current used
bytes: 16.0 MiB, peak bytes: 16.0 MiB
| \- default_leaf: Current used
bytes: 16.0 MiB, peak bytes: 16.0 MiB
\- gluten::MemoryAllocator: Current used
bytes: 0.0 B, peak bytes: 0.0 B
+- WholeStageIterator.201:
Current used bytes: 9.0 MiB, peak bytes: 66.0 MiB
\- single: Current used
bytes: 9.0 MiB, peak bytes: 64.0 MiB
```
Why use so many memory for ShuffleExternalSorter?
### Spark version
None
### Spark configurations
_No response_
### System information
_No response_
### Relevant logs
_No response_
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