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From "liyakun (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-9345) NM actively does not accept new containers in the heartbeat
Date Tue, 05 Mar 2019 07:14:00 GMT
liyakun created YARN-9345:
-----------------------------

             Summary: NM actively does not accept new containers in the heartbeat
                 Key: YARN-9345
                 URL: https://issues.apache.org/jira/browse/YARN-9345
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: nodemanager
            Reporter: liyakun
            Assignee: liyakun


At present, NM has only one health check mechanism. If it enters an unhealthy state, all the
containers running on it will be killed.
However, the unhealthy condition of node can be divided into two types, one is long-term unavailable
(current health mechanism), and the other is only temporary pressure.
For temporary stress, node only needs to wait for a while to return to normal (such as temporary
load high).
To do this, we need to extend the functionality of the health check to join the state of temporarily
not accepting new tasks.



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