bdc1598a43
## What changes were proposed in this pull request? Running spark on yarn, I got ``` java.lang.ClassCastException: org.apache.hadoop.ipc.CallerContext$Builder cannot be cast to scala.runtime.Nothing$ ``` Utils.classForName return Class[Nothing], I think it should be defind as Class[_] to resolve this issue ## How was this patch tested? not need Closes #25389 from hddong/SPARK-28657-fix-currentContext-Instance-failed. Lead-authored-by: hongdd <jn_hdd@163.com> Co-authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com> Signed-off-by: Sean Owen <sean.owen@databricks.com> |
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