Hi, all,
After turning on the trace, I saw a strange exclamation mark in
the intermediate plans. This happened in catalyst analyzer.
Join Inner, Some((col1#0 = col1#6))
Project [col1#0,col2#1,col3#2,col2_alias#24,col3#2 AS col3_alias#13]
Project [col1#0,col2#1,col3#2,col2#1 AS col2_alias#24]
LogicalRDD [col1#0,col2#1,col3#2], MapPartitionsRDD[1] at
createDataFrame at SimpleApp.scala:32
Aggregate [col1#6], [col1#6,count(col1#6) AS count(col1)#5L]
*!Project [col1#6,col2#7,col3#8,col2_alias#24,col3#8 AS col3_alias#4]*
Project [col1#6,col2#7,col3#8,col2#7 AS col2_alias#3]
LogicalRDD [col1#6,col2#7,col3#8], MapPartitionsRDD[1] at
createDataFrame at SimpleApp.scala:32
Could anybody give me a hint why there exists a !(exclamation mark) before
the node name (Project)? This ! mark does not disappear in the subsequent
query plan.
Thank you!
Xiao Li
