showuon commented on a change in pull request #10471:
URL: https://github.com/apache/kafka/pull/10471#discussion_r606757807



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File path: core/src/main/scala/kafka/admin/ReassignPartitionsCommand.scala
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@@ -1775,29 +1429,26 @@ object ReassignPartitionsCommand extends Logging {
 
   sealed class ReassignPartitionsCommandOptions(args: Array[String]) extends 
CommandDefaultOptions(args)  {
     // Actions
-    val verifyOpt = parser.accepts("verify", "Verify if the reassignment 
completed as specified by the --reassignment-json-file option. If there is a 
throttle engaged for the replicas specified, and the rebalance has completed, 
the throttle will be removed")
+    val verifyOpt = parser.accepts("verify", "Verify if the reassignment 
completed as specified by the " +
+      "--reassignment-json-file option. If there is a throttle engaged for the 
replicas specified, and the rebalance has completed, the throttle will be 
removed")
     val generateOpt = parser.accepts("generate", "Generate a candidate 
partition reassignment configuration." +
       " Note that this only generates a candidate assignment, it does not 
execute it.")
     val executeOpt = parser.accepts("execute", "Kick off the reassignment as 
specified by the --reassignment-json-file option.")
     val cancelOpt = parser.accepts("cancel", "Cancel an active reassignment.")
     val listOpt = parser.accepts("list", "List all active partition 
reassignments.")
 
     // Arguments
-    val bootstrapServerOpt = parser.accepts("bootstrap-server", "the server(s) 
to use for bootstrapping. REQUIRED if " +
-                      "an absolute path of the log directory is specified for 
any replica in the reassignment json file, " +
-                      "or if --zookeeper is not given.")
+    val bootstrapServerOpt = parser.accepts("bootstrap-server", "REQUIRED: the 
server(s) to use for bootstrapping.")
                       .withRequiredArg
                       .describedAs("Server(s) to use for bootstrapping")
                       .ofType(classOf[String])
+                      .required()

Review comment:
       Make `bootstrapServerOpt` as required




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