hornetq 消息阻塞的问题=

使用hornetq队列的时候，总是会出现阻塞的情况，
我是使用线程池起了15个线程，每秒种进行拿取一次，但是在进行一段时间后总是会多出来一个消费者
然后就不能拿取到消息了，求大神指导

源代码。。。。。。。。。。。。。。。。

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="urn:hornetq /schema/hornetq-configuration.xsd">
<!--

192.168.0.215
11212
255.255.255.0
9876
2000

-->
HornetQ.main.config

 <bindings-directory>F:/hornetq/data/messaging/bindings</bindings-directory>

 <large-messages-directory>F:/hornetq/data/messaging/largemessages</large-messages-directory>

 <paging-directory>F:/hornetq/data/messaging/paging</paging-directory>

<!--离线消息固化到文件-->
<journal-directory>F:/hornetq/journal</journal-directory>
<journal-min-files>10</journal-min-files>
<!-- 缓存大小 -->
<id-cache-size>9000</id-cache-size>
<jmx-management-enabled>true</jmx-management-enabled>   
<!-- 消息计数器 -->
<message-counter-enabled>true</message-counter-enabled>
<!-- keep history for a week -->
<message-counter-max-day-history>7</message-counter-max-day-history>            
<!-- sample the queues every minute (60000ms) -->
<message-counter-sample-period>60000</message-counter-sample-period>
<persistence-enabled>true</persistence-enabled>    
<!-- 通知将从JMS话题 "notificationsTopic"上接收 
<management-notification-address>jms.queue.notificationsQueue</management-notification-address>
--> 

　　　<!--不配置这个的话会有一个安全警告-->
HORNETQ.CLUSTER.ADMIN.USER
test65525

<!-- Connectors -->
<connectors>
    <connector name="connector-netty">
        <factory-class>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory
        </factory-class>
        <param key="use-nio" value="true" />
        <param key="host" value="localhost"/>
        <param key="port" value="11212" />
    </connector>

    <!-- SSL connector -->
    <connector name="netty-ssl-connector">
     <factory-class>org.hornetq.core.remoting.impl.netty.NettyConnectorFactory</factory-class>
     <param key="host" value="localhost"/>
     <param key="port" value="5500"/>
     <param key="ssl-enabled" value="true"/>
     <param key="key-store-path" value="F:/ssl/keystore"/>
     <param key="key-store-password" value="test"/>
  </connector>
</connectors>

<!-- Acceptors -->
<acceptors>
    <acceptor name="netty">
        <factory-class>org.hornetq.core.remoting.impl.netty.NettyAcceptorFactory
        </factory-class>
        <!--  -->
        <param key="use-nio" value="true" />
        <param key="host" value="0.0.0.0,127.0.0.1,localhost"></param>
        <param key="port" value="11212" />
    </acceptor>

    <!-- SSL connector -->
  <acceptor name="netty-ssl-acceptor">
     <factory-class>org.hornetq.core.remoting.impl.netty.NettyAcceptorFactory</factory-class>
     <param key="host" value="localhost"/>
     <param key="port" value="5500"/>
     <param key="ssl-enabled" value="true"/>
     <param key="key-store-path" value="F:/ssl/keystore"/>
     <param key="key-store-password" value="test"/>
     <param key="trust-store-path" value="F:/ssl/truststore"/>
     <param key="trust-store-password" value="test"/>
  </acceptor>
</acceptors>

<!-- Other config -->
<address-settings>
    <address-setting match="jms.queue.#">
        <redelivery-delay>5000</redelivery-delay>
        <!-- 没有导致远程queue查找不到 -->
        <expiry-address>jms.queue.expiryQueue</expiry-address>
        <!-- 没有导致远程queue查找不到 -->
        <last-value-queue>true</last-value-queue>
        <max-size-bytes>100000</max-size-bytes>
        <page-size-bytes>20000</page-size-bytes>
        <redistribution-delay>0</redistribution-delay>
        <address-full-policy>PAGE</address-full-policy>
        <!-- 死信地址-->
        <send-to-dla-on-no-route>true</send-to-dla-on-no-route>
        <dead-letter-address>jms.queue.deadLetterQueue</dead-letter-address>
        <max-delivery-attempts>3</max-delivery-attempts>
    </address-setting>
</address-settings>

<security-settings>
    <!--security for example queue-->
    <security-setting match="jms.queue.#">
        <permission type="createDurableQueue" roles="guest" />
        <permission type="deleteDurableQueue" roles="guest" />
        <permission type="createNonDurableQueue" roles="guest" />
        <permission type="deleteNonDurableQueue" roles="guest" />
        <permission type="consume" roles="guest" />
        <permission type="send" roles="guest" />
    </security-setting>
</security-settings>