我正在運行Cascading(實際上是Scalding)將分佈式緩存用於依賴瓶子的hadoop作業。級聯+ libjars = ClassNotFoundException。有時
它工作正常拳時(意味着類路徑設置正確),但隨後開始與ClassNotFoundException的失敗:
java.io.IOException: Split class cascading.tap.hadoop.io.MultiInputSplit not found
at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:387)
at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:412)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:372)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.ClassNotFoundException: cascading.tap.hadoop.io.MultiInputSplit
at java.net.URLClassLoader$1.run(URLClassLoader.java:202)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:247)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:247)
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
at org.apache.hadoop.mapred.MapTask.getSplitDetails(MapTask.java:385)
...
別的任何人有級聯和罐子成功在DistributedCache
This message似乎意味着Cascading具有分佈式緩存罐的一些內部處理。你可以擺脫這種光?
編輯:我使用的級聯在Hadoop 1.0.3
剛剛編輯:在Hadoop 1.0.3上級聯2.1.6 –