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From Jianshi Huang <jianshi.hu...@gmail.com>
Subject Re: Unable to find org.apache.spark.sql.catalyst.ScalaReflection class
Date Fri, 13 Mar 2015 06:46:02 GMT
Hmm... look like the console command still starts a Spark 1.3.0 with Scala
2.11.6 even I changed them in build.sbt.

So the test with 1.2.1 is not valid.

Jianshi

On Fri, Mar 13, 2015 at 2:34 PM, Jianshi Huang <jianshi.huang@gmail.com>
wrote:

> I've confirmed it only failed in console started by SBT.
>
> I'm using sbt-spark-package plugin, and the initialCommands look like this
> (I added implicit sqlContext to it):
>
> > show console::initialCommands
> [info]  println("Welcome to\n" +
> [info] "      ____              __\n" +
> [info] "     / __/__  ___ _____/ /__\n" +
> [info] "    _\\ \\/ _ \\/ _ `/ __/  '_/\n" +
> [info] "   /___/ .__/\\_,_/_/ /_/\\_\\   version \"1.3.0-rc2\"\n" +
> [info] "      /_/\n" +
> [info] "Using Scala \"2.11.6\"\n")
> [info]
> [info] import org.apache.spark.SparkContext._
> [info]
> [info] val sc = {
> [info]   val conf = new  org.apache.spark.SparkConf()
> [info]     .setMaster("local")
> [info]     .setAppName("Sbt console + Spark!")
> [info]   new org.apache.spark.SparkContext(conf)
> [info] }
> [info] println("Created spark context as sc.")
> [info]
> [info] def time[T](f: => T): T = {
> [info]   import System.{currentTimeMillis => now}
> [info]   val start = now
> [info]   try { f } finally { println("Elapsed: " + (now - start)/1000.0 +
> " s") }
> [info] }
> [info]
> [info] @transient val sqlc = new org.apache.spark.sql.SQLContext(sc)
> [info] implicit def sqlContext = sqlc
> [info] import sqlc._
>
>
> Jianshi
>
>
> On Fri, Mar 13, 2015 at 3:10 AM, Jianshi Huang <jianshi.huang@gmail.com>
> wrote:
>
>> BTW, I was running tests from SBT when I get the errors. One test turn a
>> Seq of case class to DataFrame.
>>
>> I also tried run similar code in the console, but failed with same error.
>>
>> I tested both Spark 1.3.0-rc2 and 1.2.1 with Scala 2.11.6 and 2.10.4
>>
>> Any idea?
>>
>> Jianshi
>>
>> On Fri, Mar 13, 2015 at 2:23 AM, Jianshi Huang <jianshi.huang@gmail.com>
>> wrote:
>>
>>> Same issue here. But the classloader in my exception is somehow
>>> different.
>>>
>>> scala.ScalaReflectionException: class
>>> org.apache.spark.sql.catalyst.ScalaReflection in JavaMirror with
>>> java.net.URLClassLoader@53298398 of type class java.net.URLClassLoader
>>> with classpath
>>>
>>>
>>> Jianshi
>>>
>>> On Sun, Mar 1, 2015 at 9:32 AM, Michael Armbrust <michael@databricks.com
>>> > wrote:
>>>
>>>> I think its possible that the problem is that the scala compiler is not
>>>> being loaded by the primordial classloader (but instead by some child
>>>> classloader) and thus the scala reflection mirror is failing to initialize
>>>> when it can't find it. Unfortunately, the only solution that I know of is
>>>> to load all required jars when the JVM starts.
>>>>
>>>> On Sat, Feb 28, 2015 at 5:26 PM, Ashish Nigam <ashnigamtech@gmail.com>
>>>> wrote:
>>>>
>>>>> Also, can scala version play any role here?
>>>>> I am using scala 2.11.5 but all spark packages have dependency to
>>>>> scala 2.11.2
>>>>> Just wanted to make sure that scala version is not an issue here.
>>>>>
>>>>> On Sat, Feb 28, 2015 at 9:18 AM, Ashish Nigam <ashnigamtech@gmail.com>
>>>>> wrote:
>>>>>
>>>>>> Hi,
>>>>>> I wrote a very simple program in scala to convert an existing RDD
to
>>>>>> SchemaRDD.
>>>>>> But createSchemaRDD function is throwing exception
>>>>>>
>>>>>> Exception in thread "main" scala.ScalaReflectionException: class
>>>>>> org.apache.spark.sql.catalyst.ScalaReflection in JavaMirror with
primordial
>>>>>> classloader with boot classpath [.....] not found
>>>>>>
>>>>>>
>>>>>> Here's more info on the versions I am using -
>>>>>>
>>>>>> <scala.binary.version>2.11</scala.binary.version>
>>>>>>     <spark.version>1.2.1</spark.version>
>>>>>>     <scala.version>2.11.5</scala.version>
>>>>>>
>>>>>> Please let me know how can I resolve this problem.
>>>>>>
>>>>>> Thanks
>>>>>> Ashish
>>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Jianshi Huang
>>>
>>> LinkedIn: jianshi
>>> Twitter: @jshuang
>>> Github & Blog: http://huangjs.github.com/
>>>
>>
>>
>>
>> --
>> Jianshi Huang
>>
>> LinkedIn: jianshi
>> Twitter: @jshuang
>> Github & Blog: http://huangjs.github.com/
>>
>
>
>
> --
> Jianshi Huang
>
> LinkedIn: jianshi
> Twitter: @jshuang
> Github & Blog: http://huangjs.github.com/
>



-- 
Jianshi Huang

LinkedIn: jianshi
Twitter: @jshuang
Github & Blog: http://huangjs.github.com/

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