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Posted to issues@tez.apache.org by "Bikas Saha (JIRA)" <ji...@apache.org> on 2015/05/14 21:53:00 UTC

[jira] [Created] (TEZ-2452) Send pending events in TaskSpec

Bikas Saha created TEZ-2452:
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             Summary: Send pending events in TaskSpec
                 Key: TEZ-2452
                 URL: https://issues.apache.org/jira/browse/TEZ-2452
             Project: Apache Tez
          Issue Type: Task
            Reporter: Bikas Saha


In many cases, events for a task are already available before a task gets scheduled. By sending the events in the TaskSpec we can avoid the latency of having the task heartbeat back into the AM to get those events. This latency may be high when the AM is running many tasks and their heartbeats are backlogged in the AM (RPC, locks etc.)



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