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Posted to issues@flink.apache.org by "Yang Wang (Jira)" <ji...@apache.org> on 2019/11/05 10:11:00 UTC

[jira] [Commented] (FLINK-14382) Incorrect handling of FLINK_PLUGINS_DIR on Yarn

    [ https://issues.apache.org/jira/browse/FLINK-14382?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16967410#comment-16967410 ] 

Yang Wang commented on FLINK-14382:
-----------------------------------

[~pnowojski] [~trohrmann]

I have attached a PR to fix this issue. Please help to review.

[https://github.com/apache/flink/pull/10084]

> Incorrect handling of FLINK_PLUGINS_DIR on Yarn
> -----------------------------------------------
>
>                 Key: FLINK-14382
>                 URL: https://issues.apache.org/jira/browse/FLINK-14382
>             Project: Flink
>          Issue Type: Bug
>          Components: Deployment / YARN
>    Affects Versions: 1.9.0, 1.10.0
>            Reporter: Yang Wang
>            Assignee: Yang Wang
>            Priority: Blocker
>              Labels: pull-request-available
>             Fix For: 1.10.0, 1.9.2
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> *(This ticket is a blocker for 1.10 release while critical for 1.9.x)*
> When creating and starting up the yarn containers there are two issues with how the {{FLINK_PLUGINS_DIR}} is being handled.
>  # Content of the {{plugins}} directory is currently added to the class path, braking the encapsulation of the plugins from one another
>  # {{FLINK_PLUGINS_DIR}} is passed to the container as an absolute path as seen by the client. Because of that TaskManager or JobManager can not use it.
> Both bugs are probably contained to {{YarnClusterDescriptor#startAppMaster}} method (which calls relevant {{addEnvironmentFoldersToShipFiles}} and {{uploadAndRegisterFiles}} methods)
> (original description)
> If we do not set FLINK_PLUGINS_DIR in flink-conf.yaml, it will be set to [flink configuration|https://github.com/apache/flink/blob/9e6ff81e22d6f5f04abb50ca1aea84fd2542bf9d/flink-core/src/main/java/org/apache/flink/configuration/GlobalConfiguration.java#L158] according to the environment.
> In yarn mode, the local path will be set in flink-conf.yaml and used by jobmanager and taskmanager. We will find the warning log like below.
> {code:java}
> 2019-10-12 19:24:58,165 WARN  org.apache.flink.core.plugin.PluginConfig                     - Environment variable [FLINK_PLUGINS_DIR] is set to [/Users/wangy/IdeaProjects/apache-flink/flink-dist/target/flink-1.10-SNAPSHOT-bin/flink-1.10-SNAPSHOT/plugins] but the directory doesn't exist
> {code}
> It was in introduced by FLINK-12143.



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