Task Tracker does not handle the case of read only local dir case correctly
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Key: HADOOP-308
URL: http://issues.apache.org/jira/browse/HADOOP-308
Project: Hadoop
Type: Bug
Versions: 0.3.2
Environment: all
Reporter: Runping Qi
In case that the local dir is not writable on a node, the tasks on the node
will fail as expected, with an exception like:
(Read-only file system) at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.(FileOutputStream.java:179)
at java.io.FileOutputStream.(FileOutputStream.java:131)
at org.apache.hadoop.dfs.DFSClient$DFSOutputStream.(DFSClient.java:723)
at org.apache.hadoop.dfs.DFSClient.create(DFSClient.java:241)
at
org.apache.hadoop.dfs.DistributedFileSystem.createRaw(DistributedFileSystem.java:96)
at org.apache.hadoop.fs.FSDataOutputStream$Summer.(FSDataOutputStream.java:44)
at org.apache.hadoop.fs.FSDataOutputStream.(FSDataOutputStream.java:134)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:224)
at org.apache.hadoop.fs.FileSystem.create(FileSystem.java:176)
....
at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:265)
at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:847)
However, the task tracker will continue accept new tasks and continue to fail.
The runloop of tasktracker should detect such a problem and exits.
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