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From "Sea" <261810...@qq.com>
Subject Re: please help with ClassNotFoundException
Date Thu, 13 Aug 2015 16:36:14 GMT
Yes, I guess so. I see this bug before.




------------------ 原始邮件 ------------------
发件人: "周千昊";<z.qianhao@gmail.com>;
发送时间: 2015年8月13日(星期四) 晚上9:30
收件人: "Sea"<261810726@qq.com>; "dev@spark.apache.org"<dev@spark.apache.org>;


主题: Re: please help with ClassNotFoundException



Hi sea    Is it the same issue as https://issues.apache.org/jira/browse/SPARK-8368


Sea <261810726@qq.com>于2015年8月13日周四 下午6:52写道:

Are you using 1.4.0?  If yes, use 1.4.1




------------------ 原始邮件 ------------------
发件人: "周千昊";<qhzhou@apache.org>;
发送时间: 2015年8月13日(星期四) 晚上6:04
收件人: "dev"<dev@spark.apache.org>; 

主题: please help with ClassNotFoundException




Hi,    I am using spark 1.4 when an issue occurs to me.
    I am trying to use the aggregate function:
    JavaRdd<String> rdd = some rdd;
    HashMap<Long, TypeA> zeroValue = new HashMap();
    // add initial key-value pair for zeroValue
    rdd.aggregate(zeroValue, 
                   new Function2<HashMap<Long, TypeA>,
                        String,
                        HashMap<Long, TypeA>>(){//implementation},
                   new Function2<HashMap<Long, TypeA>,
                        String,
                        HashMap<Long, TypeA>(){//implementation})


    here is the stack trace when i run the application:


Caused by: java.lang.ClassNotFoundException: TypeA
	at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
	at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:274)
	at org.apache.spark.serializer.JavaDeserializationStream$$anon$1.resolveClass(JavaSerializer.scala:66)
	at java.io.ObjectInputStream.readNonProxyDesc(ObjectInputStream.java:1612)
	at java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1517)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1771)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
	at java.util.HashMap.readObject(HashMap.java:1180)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1017)
	at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1893)
	at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1798)
	at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1350)
	at java.io.ObjectInputStream.readObject(ObjectInputStream.java:370)
	at org.apache.spark.serializer.JavaDeserializationStream.readObject(JavaSerializer.scala:69)
	at org.apache.spark.serializer.JavaSerializerInstance.deserialize(JavaSerializer.scala:89)
	at org.apache.spark.util.Utils$.clone(Utils.scala:1458)
	at org.apache.spark.rdd.RDD$$anonfun$aggregate$1.apply(RDD.scala:1049)
	at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:148)
	at org.apache.spark.rdd.RDDOperationScope$.withScope(RDDOperationScope.scala:109)
	at org.apache.spark.rdd.RDD.withScope(RDD.scala:286)
	at org.apache.spark.rdd.RDD.aggregate(RDD.scala:1047)
	at org.apache.spark.api.java.JavaRDDLike$class.aggregate(JavaRDDLike.scala:413)
	at org.apache.spark.api.java.AbstractJavaRDDLike.aggregate(JavaRDDLike.scala:47)

     however I have checked that TypeA is in the jar file which is in the classpath
    And when I use an empty HashMap as the zeroValue, the exception has gone
    Does anyone meet the same problem, or can anyone help me with it?



-- 

Best RegardZhouQianhao
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