[SPARK-10904] select(df, c("col1", "col2")) fails

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 1.5.2, 1.6.0
• Component/s: SparkR
• Assignee: Felix Cheung
• Reporter: Weiqiang Zhuang
• Created: 01/Oct/15 17:43
• Updated: 04/Oct/15 05:51
• Resolved: 04/Oct/15 05:50

Description

The help page for 'select' gives an example of
select(df, c("col1", "col2"))

However, this fails with assertion:

java.lang.AssertionError: assertion failed
at scala.Predef$.assert(Predef.scala:165)
at org.apache.spark.api.r.SerDe$.readStringBytes(SerDe.scala:92)
at org.apache.spark.api.r.SerDe$.readString(SerDe.scala:99)
at org.apache.spark.api.r.SerDe$.readTypedObject(SerDe.scala:63)
at org.apache.spark.api.r.SerDe$.readObject(SerDe.scala:52)
at org.apache.spark.api.r.RBackendHandler$$anonfun$readArgs$1.apply(RBackendHandler.scala:182)
at org.apache.spark.api.r.RBackendHandler$$anonfun$readArgs$1.apply(RBackendHandler.scala:181)

And then none of the functions will work with following error:
> head(df)
Error in if (returnStatus != 0) { : argument is of length zero

Issue Links

• links to: [Github] Pull Request #8961 (felixcheung)