[SPARK-12350] VectorAssembler#transform() initially throws an exception

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.0.0
• Component/s: Spark Core, Spark Shell

Environment

sparkShell command from sbt

• Assignee: Marcelo Masiero Vanzin
• Reporter: Jakob Odersky
• Created: 16/Dec/15 00:34
• Updated: 18/Dec/15 17:49
• Resolved: 18/Dec/15 17:49

Description

Calling VectorAssembler.transform() initially throws an exception, subsequent calls work.

Steps to reproduce

In spark-shell,
1. Create a dummy dataframe and define an assembler

import org.apache.spark.ml.feature.VectorAssembler
val df = sc.parallelize(List((1,2), (3,4))).toDF
val assembler = new VectorAssembler().setInputCols(Array("_1", "_2")).setOutputCol("features")

2. Run

assembler.transform(df).show

Initially the following exception is thrown:

15/12/15 16:20:19 ERROR TransportRequestHandler: Error opening stream /classes/org/apache/spark/sql/catalyst/expressions/Object.class for request from /9.72.139.102:60610
java.lang.IllegalArgumentException: requirement failed: File not found: /classes/org/apache/spark/sql/catalyst/expressions/Object.class
	at scala.Predef$.require(Predef.scala:233)
	at org.apache.spark.rpc.netty.NettyStreamManager.openStream(NettyStreamManager.scala:60)
	at org.apache.spark.network.server.TransportRequestHandler.processStreamRequest(TransportRequestHandler.java:136)
	at org.apache.spark.network.server.TransportRequestHandler.handle(TransportRequestHandler.java:106)
	at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:104)
	at org.apache.spark.network.server.TransportChannelHandler.channelRead0(TransportChannelHandler.java:51)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:266)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at org.apache.spark.network.util.TransportFrameDecoder.channelRead(TransportFrameDecoder.java:86)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
	at java.lang.Thread.run(Thread.java:745)

Subsequent calls work:

+---+---+---------+
| _1| _2| features|
+---+---+---------+
|  1|  2|[1.0,2.0]|
|  3|  4|[3.0,4.0]|
+---+---+---------+

It seems as though there is some internal state that is not initialized.

iyounus originally found this issue.

Issue Links

• is duplicated by: SPARK-12366 IllegalArgumentException: requirement failed: File not found: ...sql/catalyst/expressions/GeneratedClass.class when df.show
• links to: [Github] Pull Request #10337 (vanzin)