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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2001) Threshold for RM to accept requests from AM after failover
Date Fri, 19 Sep 2014 11:34:39 GMT

    [ https://issues.apache.org/jira/browse/YARN-2001?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14140336#comment-14140336
] 

Hudson commented on YARN-2001:
------------------------------

SUCCESS: Integrated in Hadoop-Yarn-trunk #685 (See [https://builds.apache.org/job/Hadoop-Yarn-trunk/685/])
YARN-2001. Added a time threshold for RM to wait before starting container allocations after
restart/failover. Contributed by Jian He. (vinodkv: rev 485c96e3cb9b0b05d6e490b4773506da83ebc61d)
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fifo/FifoScheduler.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMContext.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/fair/FairScheduler.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/ResourceManager.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/TestWorkPreservingRMRestart.java
* hadoop-yarn-project/CHANGES.txt
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/scheduler/capacity/CapacityScheduler.java
* hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/RMContextImpl.java


> Threshold for RM to accept requests from AM after failover
> ----------------------------------------------------------
>
>                 Key: YARN-2001
>                 URL: https://issues.apache.org/jira/browse/YARN-2001
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Jian He
>            Assignee: Jian He
>             Fix For: 2.6.0
>
>         Attachments: YARN-2001.1.patch, YARN-2001.2.patch, YARN-2001.3.patch, YARN-2001.4.patch,
YARN-2001.5.patch, YARN-2001.5.patch, YARN-2001.5.patch
>
>
> After failover, RM may require a certain threshold to determine whether it’s safe to
make scheduling decisions and start accepting new container requests from AMs. The threshold
could be a certain amount of nodes. i.e. RM waits until a certain amount of nodes joining
before accepting new container requests.  Or it could simply be a timeout, only after the
timeout RM accepts new requests. 
> NMs joined after the threshold can be treated as new NMs and instructed to kill all its
containers.



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