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https://issues.apache.org/jira/browse/YARN-9129?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang reassigned YARN-9129:
-------------------------------
Assignee: Eric Yang
> 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
>
>
> 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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