Yohahaha commented on code in PR #5456:
URL: https://github.com/apache/incubator-gluten/pull/5456#discussion_r1571943131


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shims/common/src/main/scala/org/apache/gluten/GlutenConfig.scala:
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@@ -1211,7 +1211,7 @@ object GlutenConfig {
       .internal()
       .doc("The IO threads for connector split preloading")
       .intConf
-      .createWithDefault(0)
+      .createWithDefaultFunction(() => 
SQLConf.get.getConfString("spark.executor.cores", "1").toInt)

Review Comment:
   may I ask why use spark.executor.cores as default values? why not set 2 to 
align with Velox?



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