ActiveMQ 5.13.4 发布，JMS 消息服务器

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　　ActiveMQ 5.13.4 已经发布。修复了30多个问题。
　　PS. 真的很想看到最近版本的 ActiveMQ, Artemis, Rabbitmq 的对比评测。
　　详细列表：
　　Bug

• 　　[AMQ-5426] - ActiveMQMessageConsumer could run into NPE due to concurrent access to internal state
  
• 　　[AMQ-5886] - AMQ accepts illegal MQTT protocol level (5, only 3 and 4 are defined)
  
• 　　[AMQ-6194] - Deleting a temporary queue creates a warning message in the broker
  
• 　　[AMQ-6271] - activemq-osgi defines wrong range for org.springframework.osgi...
  
• 　　[AMQ-6275] - Error when using ws transport connector
  
• 　　[AMQ-6285] - MessageDatabase doesn't properly cleanup the checkpoint scheduler on shutdown
  
• 
  　　[AMQ-6287] - Message ack rewrite task doesn't properly>
  
• 
  　　[AMQ-6290] - JMS Pool reconnection logic not always>　　[AMQ-6291] - Thread unsafe code in TcpTransportServer can lead to NPE or other errors on start / stop
  
• 　　[AMQ-6298] - Incorrect Import-Package version range for org.springframework.osgi
  
• 　　[AMQ-6305] - AMQP: Drain requests can go unaswered in certain cases.
  
• 　　[AMQ-6310] - Certain VirtualTopic configurations no longer send messages to the correct queue
  
• 　　[AMQ-6325] - JMS Selector parsing will not fail if a valid selector is followed by invalid text
  
• 　　[AMQ-6334]- ActiveMQConnection triggered heap space out of memory error when usedwith org.apache.activemq.network.SimpleJmsQueueConnector
  
• 　　[AMQ-6340] - Queue order lost on consumer close in some cases
  
• 　　[AMQ-6343] - [MQTT] LWT doesn't work over a websocket connection
  
• 　　[AMQ-6345] - [MQTT] ping response without CONNECT
  　　[AMQ-6346] - Concurrent access to a MQTT Transport from WebSocket client can deadlock
  
• 　　[AMQ-6350] - PooledConnectionFactory throws 'IllegalStateException: Pool not open' after re-init
  
• 
  　　[AMQ-6352] - Temporary message store cursor does not track store message>
  
• 　　[AMQ-6353] - AMQP: Using JMS Transformer, preserve the type of the original CorrelationId
  
• 
  　　[AMQ-6356] - Processing a KahaUpdateMessageCommand can lead to wrong store>
  
• 　　[AMQ-6357] - shutdown due to a local error: java.lang.ArithmeticException: / by zero
  

改进

• 　　[AMQ-6100] - Virtual topic message destination should be the target queue
  
• 　　[AMQ-6292] - ACK rewrite task does unnecessary syncs
  
• 　　[AMQ-6301] - Embed spring-dm in activemq-osgi to avoid loading spring-dm in Karaf
  
• 　　[AMQ-6304] - Container-id field blank on sending an AMQP 1.0 open frame to the client
  
• 　　[AMQ-6319] - AMQP: Make it easier to disable accepting non-SASL clients and add more tests.
  
• 　　[AMQ-6328] - Upgrade Camel to latest
  

　　新特性

• 　　[AMQ-6274] - Add option to composite destinations to set originalMessage header