Generic application history service
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Key: MAPREDUCE-3061
URL: https://issues.apache.org/jira/browse/MAPREDUCE-3061
Project: Hadoop Map/Reduce
Issue Type: Improvement
Components: mrv2
Affects Versions: 0.23.0
Reporter: Luke Lu
Fix For: 0.24.0
The mapreduce job history server currently needs to be deployed as a trusted
server in sync with the mapreduce runtime. Every new application would need a
similar application history server. Having to deploy O(T*V) (where T is number
of type of application, V is number of version of application) trusted servers
is clearly not scalable.
Job history storage handling itself is pretty generic: move the logs and
history data into a particular directory for later serving. Job history data is
already stored as json (or binary avro). I propose that we create only one
trusted application history server, which can have a generic UI (display json
as a tree of strings) as well. Specific application/version can deploy
untrusted webapps (a la AMs) to query the application history server and
interpret the json for its specific UI and/or analytics.
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