summaryzb commented on code in PR #950:
URL: https://github.com/apache/incubator-uniffle/pull/950#discussion_r1360522814
##########
client-spark/common/src/main/java/org/apache/spark/shuffle/writer/WriteBufferManager.java:
##########
@@ -128,7 +128,11 @@ public WriteBufferManager(
super(taskMemoryManager, taskMemoryManager.pageSizeBytes(),
MemoryMode.ON_HEAP);
this.bufferSize = bufferManagerOptions.getBufferSize();
this.spillSize = bufferManagerOptions.getBufferSpillThreshold();
- this.instance = serializer.newInstance();
+ // columnar shuffle reader use the serialized data directly
+ if (serializer != null) {
Review Comment:
@loukey-lj In writer side the serializer is specify with null directly in
gluten side code, serializeStream method is not implemented, because serialize
work is done in native engine layer.
In reader side it's taken from `rssHandle.getDependency().serializer()`,
that's why only deserializeStream method is implemented
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