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From "Simon Prewo (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-8785) Error Message "Invalid docker rw mount" not helpful
Date Mon, 01 Oct 2018 20:42:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-8785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Simon Prewo updated YARN-8785:
------------------------------
    Affects Version/s: 3.1.0

> Error Message "Invalid docker rw mount" not helpful
> ---------------------------------------------------
>
>                 Key: YARN-8785
>                 URL: https://issues.apache.org/jira/browse/YARN-8785
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>    Affects Versions: 3.1.0, 2.9.1, 3.1.1
>            Reporter: Simon Prewo
>            Assignee: Simon Prewo
>            Priority: Major
>              Labels: Docker
>         Attachments: YARN-8785-branch-3.1.002.patch
>
>   Original Estimate: 2h
>  Remaining Estimate: 2h
>
> A user recieves the error message _Invalid docker rw mount_ when a container tries to
mount a directory which is not configured in property  *docker.allowed.rw-mounts*. 
> {code:java}
> Invalid docker rw mount '/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001:/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001',
realpath=/usr/local/hadoop/logs/userlogs/application_1536476159258_0004/container_1536476159258_0004_02_000001{code}
> The error message makes the user think "It is not possible due to a docker issue". My
suggestion would be to put there a message like *Configuration of the container executor does
not allow mounting directory.*.
> hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/native/container-executor/impl/utils/docker-util.c
> CURRENT:
> {code:java}
>     permitted_rw = check_mount_permitted((const char **) permitted_rw_mounts, mount_src);
>     permitted_ro = check_mount_permitted((const char **) permitted_ro_mounts, mount_src);
>     if (permitted_ro == -1 || permitted_rw == -1) {
>       fprintf(ERRORFILE, "Invalid docker mount '%s', realpath=%s\n", values[i], mount_src);
> ...
> {code}
> NEW:
> {code:java}
>     permitted_rw = check_mount_permitted((const char **) permitted_rw_mounts, mount_src);
>     permitted_ro = check_mount_permitted((const char **) permitted_ro_mounts, mount_src);
>     if (permitted_ro == -1 || permitted_rw == -1) {
>       fprintf(ERRORFILE, "Configuration of the container executor does not allow mounting
directory '%s', realpath=%s\n", values[i], mount_src);
> ...
> {code}



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