[ https://issues.apache.org/jira/browse/HADOOP-18779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17736067#comment-17736067 ]
ASF GitHub Bot commented on HADOOP-18779: ----------------------------------------- slfan1989 commented on PR #5762: URL: https://github.com/apache/hadoop/pull/5762#issuecomment-1602421592 @goiri I have carefully read the code related to the `--daemon` flag and conducted experiments in a testing environment. The daemon of hdfs/yarn contains 3 operations, namely start|status|stop - hdfs --daemon start namenode When starting the namenode, we can use the command `hdfs --daemon start namenode`, which initiates the namenode without generating any output information. I believe this behavior is appropriate. <img width="482" alt="image" src="https://github.com/apache/hadoop/assets/55643692/8fbb023c-8153-4dc8-aee2-4c164893a476"> - hdfs --daemon status namenode When utilizing the `hdfs --daemon status namenode` command, I still expect it to provide some information regarding the namenode's status. Nevertheless, I have noticed that executing this command does not yield any output. <img width="475" alt="image" src="https://github.com/apache/hadoop/assets/55643692/dd92256b-6741-4a5f-b3bb-299bbe72b06d"> I have added some output information for the `status` command. - If the service is in a running state. <img width="484" alt="image" src="https://github.com/apache/hadoop/assets/55643692/48f6cdb7-1acc-480f-bc8c-9c8c2615e9db"> - If the service is in a stopped state. <img width="489" alt="image" src="https://github.com/apache/hadoop/assets/55643692/57446a1f-f19f-419e-8f10-ab4c35770276"> This modification only affects the `status` command of the daemon and does not have any impact on the 'start' or 'stop' commands. > Improve hadoop-function.sh#status script > ---------------------------------------- > > Key: HADOOP-18779 > URL: https://issues.apache.org/jira/browse/HADOOP-18779 > Project: Hadoop Common > Issue Type: Improvement > Components: common > Affects Versions: 3.4.0 > Reporter: Shilun Fan > Assignee: Shilun Fan > Priority: Major > Labels: pull-request-available > > When we use yarn --daemon status router/nodemanager, I found that no > information can be displayed. I checked the script and modified the script of > hadoop-functions.sh#status to increase the output information. > yarn --daemon status router > - If the service is started > router is running as process 47626. > - If the service is stop > router is stopped. -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org