Details
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New Feature
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Status: Open
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Major
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Resolution: Unresolved
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Description
Speculative execution improves the latency of the job. Sometimes the job has few very slow reducers. Spending a little more resource on speculative tasks can improve the latency a lot. It will be nice that the users can manually select one task and force the speculative execution on that task just like we can manually kill/fail task.
The proposal is add link says "speculate" in taskdetails.jsp page where we do "kill/fail".
Thoughts?