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From felixcheung <...@git.apache.org>
Subject [GitHub] spark pull request #14179: [SPARK-16055][SPARKR] warning added while using s...
Date Fri, 15 Jul 2016 00:00:16 GMT
Github user felixcheung commented on a diff in the pull request:

    https://github.com/apache/spark/pull/14179#discussion_r70904015
  
    --- Diff: R/pkg/R/sparkR.R ---
    @@ -155,6 +155,9 @@ sparkR.sparkContext <- function(
     
       existingPort <- Sys.getenv("EXISTING_SPARKR_BACKEND_PORT", "")
       if (existingPort != "") {
    +    if(sparkPackages != ""){
    +        warning("--packages flag should be used with with spark-submit")
    --- End diff --
    
    @shivaram maybe it should but sparkR.session() is already called in sparkR shell, and
calling SparkSession again with the sparkPackages does nothing:
    ```
    > sparkR.session(sparkPackages = "com.databricks:spark-avro_2.10:2.0.1")
    Java ref type org.apache.spark.sql.SparkSession id 1
    > read.df("", source = "avro")
    16/07/14 23:55:43 ERROR RBackendHandler: loadDF on org.apache.spark.sql.api.r.SQLUtils
failed
    Error in invokeJava(isStatic = TRUE, className, methodName, ...) :
      org.apache.spark.sql.AnalysisException: Failed to find data source: avro. Please use
Spark package http://spark-packages.org/package/databricks/spark-avro;
    ```
    @krishnakalyan3 something like "sparkPackages has no effect when using spark-submit or
sparkR shell, please use the --packages commandline instead"


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