Deegue commented on a change in pull request #23559: [SPARK-26630][SQL] Fix
ClassCastException in TableReader while creating HadoopRDD
URL: https://github.com/apache/spark/pull/23559#discussion_r249310923
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File path: sql/hive/src/main/scala/org/apache/spark/sql/hive/TableReader.scala
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@@ -289,15 +287,28 @@ class HadoopTableReader(
}
/**
- * Creates a HadoopRDD based on the broadcasted HiveConf and other job
properties that will be
+ * The entry of creating a RDD.
+ */
+ private def createHadoopRDD(
+ inputClassName: String, localTableDesc: TableDesc, inputPathStr:
String): RDD[Writable] = {
+ if (classOf[org.apache.hadoop.mapreduce.InputFormat[_, _]]
Review comment:
I think we need that because the result of `hiveTable.getInputFormatClass`
can be various.
It's difficult to list all of the input format classes and we can find the
similar usage in `org.apache.spark.scheduler.InputFormatInfo`(line 71 and 76)
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