slfan1989 commented on code in PR #5272:
URL: https://github.com/apache/hadoop/pull/5272#discussion_r1064239731


##########
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-router/src/main/java/org/apache/hadoop/yarn/server/router/webapp/FederationInterceptorREST.java:
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@@ -1145,10 +1147,59 @@ public SchedulerTypeInfo getSchedulerInfo() {
     throw new NotImplementedException("Code is not implemented");
   }
 
+  /**
+   * This method dumps the scheduler logs for the time got in input, and it is
+   * reachable by using {@link RMWSConsts#SCHEDULER_LOGS}.
+   *
+   * @param time the period of time. It is a FormParam.
+   * @param hsr the servlet request
+   * @return the result of the operation
+   * @throws IOException when it cannot create dump log file
+   */
   @Override
   public String dumpSchedulerLogs(String time, HttpServletRequest hsr)
       throws IOException {
-    throw new NotImplementedException("Code is not implemented");
+
+    if (StringUtils.isBlank(time)) {
+      routerMetrics.incrDumpSchedulerLogsFailedRetrieved();
+      throw new IllegalArgumentException("Parameter error, the time is empty 
or null.");
+    }
+
+    int period = Integer.parseInt(time);

Review Comment:
   Thank you very much for helping to review the code, I will modify the code.



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