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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-6533) Race condition in writing service record to registry in yarn native services
Date Mon, 06 Nov 2017 22:34:07 GMT

    [ https://issues.apache.org/jira/browse/YARN-6533?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16241075#comment-16241075
] 

Hudson commented on YARN-6533:
------------------------------

SUCCESS: Integrated in Jenkins build Hadoop-trunk-Commit #13193 (See [https://builds.apache.org/job/Hadoop-trunk-Commit/13193/])
YARN-6533. Race condition in writing service record to registry in yarn (jianhe: rev a041373dd418a123438c62c511c908859578bf01)
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/providers/ProviderUtils.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/server/appmaster/SliderAppMaster.java
* (edit) hadoop-yarn-project/hadoop-yarn/hadoop-yarn-applications/hadoop-yarn-slider/hadoop-yarn-slider-core/src/main/java/org/apache/slider/providers/docker/DockerProviderService.java


> Race condition in writing service record to registry in yarn native services
> ----------------------------------------------------------------------------
>
>                 Key: YARN-6533
>                 URL: https://issues.apache.org/jira/browse/YARN-6533
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Billie Rinaldi
>            Assignee: Billie Rinaldi
>             Fix For: yarn-native-services
>
>         Attachments: YARN-6533-yarn-native-services.001.patch, YARN-6533-yarn-native-services.002.patch,
YARN-6533-yarn-native-services.003.patch
>
>
> The ServiceRecord is written twice, once when the container is initially registered and
again in the Docker provider once the IP has been obtained for the container. These occur
asynchronously, so the more important record (the one with the IP) can be overwritten by the
initial record. Only one record needs to be written, so we can stop writing the initial record
when the Docker provider is being used.



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