Peter Bacsko created YARN-10019: ----------------------------------- Summary: container-executor: misc improvements in child process and regarding exec() calls Key: YARN-10019 URL: https://issues.apache.org/jira/browse/YARN-10019 Project: Hadoop YARN Issue Type: Bug Components: nodemanager Reporter: Peter Bacsko Assignee: Peter Bacsko
There are a couple of improvements that we can do in container-executor regarding how we exit from child processes and how we handle failed exec() calls: 1. If we're in the child code path and we detect an erroneous condition, the usual way is just simply call {{_exit()}}. Normal {{exit()}} occurs in the parent. Calling {{_exit()}} prevents flushing stdio buffers twice and any cleanup logic registered with {{atexit()}} or {{on_exit()}} will run only once. 2. There's code like {{if (execlp(script_file_dest, script_file_dest, NULL) != 0) ...}} which is not necessary. Exec functions are not supposed to return. If they do, it's definitely an error, so no need to check the return value. -- This message was sent by Atlassian Jira (v8.3.4#803005) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org