[HADOOP-1071] RPC$VersionMismatch exception is not fatal to JobTracker

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.12.0
• Fix Version/s: 0.13.0
• Assignee: Tahir Hashmi
• Reporter: Nigel Daley
• Created: 06/Mar/07 23:13
• Updated: 08/Jul/09 16:52
• Resolved: 23/Mar/07 21:06

Description

The following exception should be fatal to the JT, but isn't. Instead, this exception is repeated every 1 second forever.

2007-03-06 23:07:35,947 WARN org.apache.hadoop.mapred.JobTracker: Error starting tracker: org.apache.hadoop.ipc.RPC$VersionMismatch: Protocol org.apache.hadoop.dfs.ClientProtocol v
ersion mismatch. (client = 7, server = 10)
at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:253)
at org.apache.hadoop.dfs.DFSClient.<init>(DFSClient.java:106)
at org.apache.hadoop.dfs.DistributedFileSystem.initialize(DistributedFileSystem.java:65)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:160)
at org.apache.hadoop.fs.FileSystem.getNamed(FileSystem.java:119)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:91)
at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:546)
at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:76)
at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:1600)