WritableName can't load class: com.linkedin.camus.etl.kafka.common.EtlKey

[zhentaowang]

-text: Fatal internal error
java.lang.RuntimeException: java.io.IOException: WritableName can't load class: com.linkedin.camus.etl.kafka.common.EtlKey
at org.apache.hadoop.io.SequenceFile$Reader.getKeyClass(SequenceFile.java:2086)
at org.apache.hadoop.io.SequenceFile$Reader.init(SequenceFile.java:2017)
at org.apache.hadoop.io.SequenceFile$Reader.initialize(SequenceFile.java:1883)
at org.apache.hadoop.io.SequenceFile$Reader.(SequenceFile.java:1832)
at org.apache.hadoop.fs.shell.Display$TextRecordInputStream.(Display.java:223)
at org.apache.hadoop.fs.shell.Display$Text.getInputStream(Display.java:153)
at org.apache.hadoop.fs.shell.Display$Cat.processPath(Display.java:102)
at org.apache.hadoop.fs.shell.Command.processPaths(Command.java:317)
at org.apache.hadoop.fs.shell.Command.processPathArgument(Command.java:289)
at org.apache.hadoop.fs.shell.Command.processArgument(Command.java:271)
at org.apache.hadoop.fs.shell.Command.processArguments(Command.java:255)
at org.apache.hadoop.fs.shell.FsCommand.processRawArguments(FsCommand.java:119)
at org.apache.hadoop.fs.shell.Command.run(Command.java:165)
at org.apache.hadoop.fs.FsShell.run(FsShell.java:297)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
at org.apache.hadoop.fs.FsShell.main(FsShell.java:356)
Caused by: java.io.IOException: WritableName can't load class: com.linkedin.camus.etl.kafka.common.EtlKey
at org.apache.hadoop.io.WritableName.getClass(WritableName.java:77)
at org.apache.hadoop.io.SequenceFile$Reader.getKeyClass(SequenceFile.java:2084)
... 16 more
Caused by: java.lang.ClassNotFoundException: Class com.linkedin.camus.etl.kafka.common.EtlKey not found
at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:2134)
at org.apache.hadoop.io.WritableName.getClass(WritableName.java:75)
... 17 more