Github user squito commented on a diff in the pull request:
https://github.com/apache/spark/pull/5811#discussion_r29471690
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/commands.scala ---
@@ -84,8 +84,15 @@ case class SetCommand(
logWarning(
s"Property ${SQLConf.Deprecated.MAPRED_REDUCE_TASKS} is
deprecated, " +
s"automatically converted to ${SQLConf.SHUFFLE_PARTITIONS}
instead.")
- sqlContext.setConf(SQLConf.SHUFFLE_PARTITIONS, value)
- Seq(Row(s"${SQLConf.SHUFFLE_PARTITIONS}=$value"))
+ if (value == "-1") {
+ logWarning(
+ s"Set this property to -1 for automatically determining the
number of reducers " +
+ s"is not supported, showing current
${SQLConf.SHUFFLE_PARTITIONS} instead.")
--- End diff --
actually can I suggest a small rewording a think is a little clearer?
`Setting this property to -1 for automatically determing the number of
reducers is not supported. Ignoring request, and showing
${SQLConf.SHUFFLE_PARTITIONS} instead`
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