Enable JobTracker Instrumentation API with user job configuration
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Key: HADOOP-4818
URL: https://issues.apache.org/jira/browse/HADOOP-4818
Project: Hadoop Core
Issue Type: Bug
Components: mapred
Environment: Redhat EL 5, Java 6
Reporter: Eric Yang
Fix For: 0.20.0
The JobTracker Instrumentation API is currently sending JobTracker
configuration to submitJob(conf, JobID) call. Instead, this should be changed
to submitJob(job.getJobConf(), JobID) to obtain job related configuration.
i.e., if Chukwa could use this API to find out the job history file location.
In addition, the API should be public for general public to implement useful
utilities to interface with this API.
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