[ZEPPELIN-150] Registered UDFs does not work on Spark jobs initiated from Zeppelin

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.5.0
• Component/s: Interpreters

Environment

• Zeppelin 0.5.0
• Spark 1.3.1 on top yarn cluster
• Hadoop 2.4

• Assignee: Unassigned
• Reporter: Ophir Cohen
• Created: 02/Jul/15 09:41
• Updated: 23/Aug/17 02:23

Description

When trying using UDF from Zeppelin we get java.lang.ClassNotFoundException: org.apache.zeppelin.spark.ZeppelinContext
(see below the full exception).

Steps to reproduce:

1. Create and register the UDF:

def getNum(): Int = {
    100
}
hc.udf.register("getNum",getNum _)

2. Try on exists table:

%sql select getNum() from filteredNc limit 1

Failed.

3. Directly on HiveContext:

hc.sql("select getNum() from filteredNc limit 1").collect

Failed.

• filteredNc is a local table that loaded from Hive (see below).

few insights / comments

1. On Spark shell it works as expected.
2. This bug happened only with RDDs/tables that originated from external source (Hive/S3 parquet files). Creating new DataFrame and register it works as expected. Creating DataFrame out of DataFrame that loaded from hive - failed.
3. It does not happen locally.

The (almost) full exception:

 WARN [2015-06-28 08:43:53,850] ({task-result-getter-0} Logging.scala[logWarning]:71) - Lost task 0.2 in stage 23.0 (TID 1626, ip-10-216-204-246.ec2.internal): java.lang.NoClassDefFoundError: Lorg/apache/zeppelin/spark/ZeppelinContext;
    at java.lang.Class.getDeclaredFields0(Native Method)
    at java.lang.Class.privateGetDeclaredFields(Class.java:2499)
    at java.lang.Class.getDeclaredField(Class.java:1951)
    at java.io.ObjectStreamClass.getDeclaredSUID(ObjectStreamClass.java:1659)

<Many more of ObjectStreamClass lines of exception>

Caused by: java.lang.ClassNotFoundException: org.apache.zeppelin.spark.ZeppelinContext
    at org.apache.spark.repl.ExecutorClassLoader.findClass(ExecutorClassLoader.scala:69)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 103 more
Caused by: java.lang.ClassNotFoundException: org.apache.zeppelin.spark.ZeppelinContext
    at java.lang.ClassLoader.findClass(ClassLoader.java:531)
    at org.apache.spark.util.ParentClassLoader.findClass(ParentClassLoader.scala:26)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at org.apache.spark.util.ParentClassLoader.loadClass(ParentClassLoader.scala:34)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    at org.apache.spark.util.ParentClassLoader.loadClass(ParentClassLoader.scala:30)
    at org.apache.spark.repl.ExecutorClassLoader.findClass(ExecutorClassLoader.scala:64)
    ... 105 more