[HADOOP-5194] DiskErrorException in TaskTracker when running a job

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 0.21.0

Environment

Windows, Cygwin

• Hadoop Flags: Reviewed
• Assignee: Ravi Gummadi
• Reporter: Tsz-wo Sze
• Created: 06/Feb/09 21:18
• Updated: 24/Aug/10 20:35
• Resolved: 26/Mar/09 10:26

Description

In particular, this can be reproduced in Windows by running a hadoop example such as PiEstimator.

org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find taskTracker/pids/attempt_200902021632_0001_m_000002_0 in any of the configured local directories
	at org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathToRead(LocalDirAllocator.java:381)
	at org.apache.hadoop.fs.LocalDirAllocator.getLocalPathToRead(LocalDirAllocator.java:138)
	at org.apache.hadoop.mapred.TaskTracker.getPidFilePath(TaskTracker.java:430)
	at org.apache.hadoop.mapred.TaskTracker.removePidFile(TaskTracker.java:440)
	at org.apache.hadoop.mapred.JvmManager$JvmManagerForType$JvmRunner.runChild(JvmManager.java:370)
	at org.apache.hadoop.mapred.JvmManager$JvmManagerForType$JvmRunner.run(JvmManager.java:338)

(Have changed TaskTracker.java to print out the trace.)

This patch disables usage of setsid and pidfiles on Windows.