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From "Eric Yang (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-9129) Ensure flush after printing to stderr plus additional cleanup
Date Mon, 17 Dec 2018 22:19:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Eric Yang updated YARN-9129:
----------------------------
    Attachment: YARN-9129.001.patch

> Ensure flush after printing to stderr plus additional cleanup
> -------------------------------------------------------------
>
>                 Key: YARN-9129
>                 URL: https://issues.apache.org/jira/browse/YARN-9129
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>            Reporter: Billie Rinaldi
>            Assignee: Eric Yang
>            Priority: Major
>             Fix For: 3.3.0
>
>         Attachments: YARN-9129.001.patch
>
>
> Following up on findings in YARN-8962, I noticed the following issues in container-executor
and main.c:
> - There seem to be some vars that are not cleaned up in container_executor:
> In run_docker else: free docker_binary
> In exec_container:
>   before return INVALID_COMMAND_FILE: free docker_binary
>   3x return DOCKER_EXEC_FAILED: set exit code and goto cleanup instead
>   cleanup needed before exit calls?
> - In YARN-8777 we added several fprintf(stderr calls, but the convention in container-executor.c
appears to be fprintf(ERRORFILE followed by fflush(ERRORFILE).
> - There are leaks in TestDockerUtil_test_add_ports_mapping_to_command_Test.
> - There are additional places where flush is not performed after writing to stderr, including
main.c display_feature_disabled_message. This can result in the client not receiving the error
message if the connection is closed too quickly.



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