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https://issues.apache.org/jira/browse/YARN-8151?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16461802#comment-16461802
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Hudson commented on YARN-8151:
------------------------------
SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #14116 (See
[https://builds.apache.org/job/Hadoop-trunk-Commit/14116/])
YARN-8151. Yarn RM Epoch should wrap around. Contributed by Young Chen.
(inigoiri: rev e6a80e476d4348a4373e6dd5792d70edff16516f)
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/FileSystemRMStateStore.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/LeveldbRMStateStore.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/ZKRMStateStore.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestLeveldbRMStateStore.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStoreTestBase.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/MemoryRMStateStore.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestFSRMStateStore.java
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hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/main/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/RMStateStore.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
* (edit)
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-resourcemanager/src/test/java/org/apache/hadoop/yarn/server/resourcemanager/recovery/TestZKRMStateStore.java
> Yarn RM Epoch should wrap around
> --------------------------------
>
> Key: YARN-8151
> URL: https://issues.apache.org/jira/browse/YARN-8151
> Project: Hadoop YARN
> Issue Type: Sub-task
> Reporter: Young Chen
> Assignee: Young Chen
> Priority: Major
> Fix For: 3.2.0
>
> Attachments: YARN-8151.01.patch, YARN-8151.01.patch,
> YARN-8151.02.patch, YARN-8151.03.patch, YARN-8151.04.patch, YARN-8151.05.patch
>
>
> Right now RM Epoch values in sub clusters are seeded in different ranges: 0,
> 1000, 2000, etc. If one RM restarts enough its epoch can increment until it
> clashes with a neighboring sub cluster. E.g. 999 -> 1000. To fix this, we
> introduce a configurable range by which the epoch generation is bound.
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