tasktracker dies at startup with ConcurrentModificationException thrown from
checkDirs()
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Key: MAPREDUCE-4084
URL: https://issues.apache.org/jira/browse/MAPREDUCE-4084
Project: Hadoop Map/Reduce
Issue Type: Bug
Components: tasktracker
Affects Versions: 1.0.1, 1.0.0
Environment: CentOS 5.6, linux server with JBOD disks
Reporter: Edward Seidl
if a directory named in mapred.local.dir is not writable at start-up, a
ConcurrentModficationException is thrown. this is caused by calling remove on
a collection that is being iterated over. patch MR2850.v1.3.patch from
MAPREDUCE-2850 addresses this, but it hasn't been applied in the 1.0 releases.
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