min value for autoCommitIntervalMillis. #1774 (#1775)

* typo fix

* add MessageExt.getBrokerName()

* add brokerName for toString

* get brokerName  from mq

* min value for autoCommitInterval

* use constant variable

client/src/main/java/org/apache/rocketmq/client/consumer/DefaultLitePullConsumer.java

@@ -94,6 +94,11 @@ public class DefaultLitePullConsumer extends ClientConfig implements LitePullCon
      */
     private int pullThreadNums = 20;
 
+    /**
+     * Minimum commit offset interval time in milliseconds.
+     */
+    private static final long MIN_AUTOCOMMIT_INTERVAL_MILLIS = 1000;
+
     /**
      * Maximum commit offset interval time in milliseconds.
      */
@@ -315,8 +320,10 @@ public class DefaultLitePullConsumer extends ClientConfig implements LitePullCon
     }
 
     public void setAutoCommitIntervalMillis(long autoCommitIntervalMillis) {
+        if (autoCommitIntervalMillis >= MIN_AUTOCOMMIT_INTERVAL_MILLIS) {
             this.autoCommitIntervalMillis = autoCommitIntervalMillis;
         }
+    }
 
     public int getPullBatchSize() {
         return pullBatchSize;