marin-ma commented on PR #9770:
URL: 
https://github.com/apache/incubator-gluten/pull/9770#issuecomment-2919064917

   > > Thanks for the fix. Can we get the `isSort` from ShuffleDependency in 
`CelebornShuffleManager` and pass it to `CelebornColumnarShuffleWriter`? Like 
what we do for `ColumnarShuffleWriter` 
https://github.com/apache/incubator-gluten/blob/main/backends-velox/src/main/scala/org/apache/spark/shuffle/ColumnarShuffleWriter.scala#L42
   > 
   > I think **get the `isSort` from ShuffleDependency in 
`CelebornShuffleManager`** is a good idea, and I find ColumnarShuffleWriter can 
get the dependency reference by `private val dep = 
handle.dependency.asInstanceOf[ColumnarShuffleDependency[K, V, V]]` , could we 
add a local variable `isSort` in ColumnarShuffleWriter ?
   > 
   > ```
   >   private val dep = 
handle.dependency.asInstanceOf[ColumnarShuffleDependency[K, V, V]]
   >   val isSort: Boolean = dep.isSort
   > ```
   
   @wankunde You're right. Then we can make the change simpler.


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