The TaskTracker's shell environment should not be passed to the children.
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Key: HADOOP-6058
URL: https://issues.apache.org/jira/browse/HADOOP-6058
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Reporter: Owen O'Malley
Priority: Critical
Fix For: 0.21.0
HADOOP-2838 and HADOOP-5981 added support to make the TaskTracker's shell
environment available to the tasks. This has two problems:
1. It makes the task tracker's environment part of the interface to the task,
which is fairly brittle.
2. Security code typically only passes along whitelisted environment
variables instead of everything to prevent accidental leakage from the
administrator's account.
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