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ASF GitHub Bot commented on YARN-11517: --------------------------------------- slfan1989 commented on code in PR #5766: URL: https://github.com/apache/hadoop/pull/5766#discussion_r1241044630 ########## hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestRouterCLI.java: ########## @@ -120,7 +122,10 @@ public void testDeregisterSubCluster() throws Exception { ByteArrayOutputStream dataOut = new ByteArrayOutputStream(); System.setOut(new PrintStream(dataOut)); oldOutPrintStream.println(dataOut); - String[] args = {"-deregisterSubCluster", "-c", "SC-1"}; + String[] args = {"-deregisterSubCluster", "-sc", "SC-1"}; Review Comment: Thanks for your question! You are correct that in general, a single character follows the hyphen "-". Our short option hopes to express `subcluster`, maybe `sc` is better than `c`? - RouterCLI#handleDeregisterSubCluster ``` private static final String OPTION_SC = "sc"; private static final String OPTION_SUBCLUSTERID = "subClusterId"; Option subClusterOpt = new Option(OPTION_SC, OPTION_SUBCLUSTERID, true, "The subCluster can be specified using either the '-sc' or '--subCluster' option. " + " If the subCluster's Heartbeat Timeout, it will be marked as 'SC_LOST'."); ``` - org.apache.commons.cli.Option For Options, we set short options using a hyphen `-` and long options using two hyphens `--` when using the command. ``` /** * Creates an Option using the specified parameters. * * @param option short representation of the option * @param longOption the long representation of the option * @param hasArg specifies whether the Option takes an argument or not * @param description describes the function of the option * * @throws IllegalArgumentException if there are any non valid Option characters in {@code opt}. */ public Option(final String option, final String longOption, final boolean hasArg, final String description) throws IllegalArgumentException { // ensure that the option is valid this.option = OptionValidator.validate(option); this.longOption = longOption; // if hasArg is set then the number of arguments is 1 if (hasArg) { this.argCount = 1; } this.description = description; } ``` Our short option is set as `sc`, so it should be used as `-sc` when using the command. The long option is set as `subClusterId`, so it should be used as `--subClusterId` when using the command. > Improve Federation#RouterCLI deregisterSubCluster Code > ------------------------------------------------------ > > Key: YARN-11517 > URL: https://issues.apache.org/jira/browse/YARN-11517 > Project: Hadoop YARN > Issue Type: Sub-task > Components: federation, router > Reporter: Shilun Fan > Assignee: Shilun Fan > Priority: Major > Labels: pull-request-available > -- This message was sent by Atlassian Jira (v8.20.10#820010) --------------------------------------------------------------------- To unsubscribe, e-mail: yarn-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: yarn-issues-h...@hadoop.apache.org