dh20 commented on a change in pull request #31030:
URL: https://github.com/apache/spark/pull/31030#discussion_r552307584
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File path: sql/hive/src/main/scala/org/apache/spark/sql/hive/HiveUtils.scala
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@@ -130,7 +130,10 @@ private[spark] object HiveUtils extends Logging {
val CONVERT_METASTORE_ORC = buildConf("spark.sql.hive.convertMetastoreOrc")
.doc("When set to true, the built-in ORC reader and writer are used to
process " +
- "ORC tables created by using the HiveQL syntax, instead of Hive serde.")
+ "ORC tables created by using the HiveQL syntax, instead of Hive serde." +
+ "Enabling this parameter will cause insert overwrite when reading the
table," +
+ "and the file format of this table is ORC This error will be thrown[], "
+
Review comment:
@HyukjinKwon Yes, I think so, but now the official explanation of spark
for this parameter is aimed at the difference between spark Orc vector readers,
so I think its explanation should be improved
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