什么情况下DefaultConnectionManager.getConnectionPoolAndCreateIfAbsent方法会阻塞？

[it-linnan]

Your question

线上环境出现RPC-02312异常，重试调用n次都报这个错。
异常堆栈如下：

com.alipay.sofa.rpc.core.exception.SofaRouteException: RPC-02312: The service addresses [m-ln-system:12200,] of service [com.wish.biz.ln.duringloan.srv.cprototype.Srv14300157:1.0] is not available,or specify url not exist in providers  

在客户端侧，执行jstack，获取当前线程，发现有一个线程状态是waiting。
线程阻塞在DefaultConnectionManager.getConnectionPoolAndCreateIfAbsent方法处：

"SOFA-CLI-RC-com.xxxxxx-76-T1" #610 daemon prio=5 os_prio=0 tid=0x00007f9c0c0b8800 nid=0x276 waiting on condition [0x00007f98cbd43000]
   java.lang.Thread.State: WAITING (parking)
	at sun.misc.Unsafe.park(Native Method)
	- parking to wait for  <0x0000000751c4e298> (a com.alipay.remoting.util.RunStateRecordedFutureTask)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	at java.util.concurrent.FutureTask.awaitDone(FutureTask.java:429)
	at java.util.concurrent.FutureTask.get(FutureTask.java:191)
	at com.alipay.remoting.DefaultConnectionManager.getConnectionPoolAndCreateIfAbsent(DefaultConnectionManager.java:601)
	at com.alipay.remoting.DefaultConnectionManager.getAndCreateIfAbsent(DefaultConnectionManager.java:462)
	at com.alipay.remoting.rpc.RpcClient.getConnection(RpcClient.java:769)
	at com.alipay.sofa.rpc.transport.bolt.ReuseBoltClientConnectionManager.getConnection(ReuseBoltClientConnectionManager.java:98)
	at com.alipay.sofa.rpc.transport.bolt.ReuseBoltClientConnectionManager.isConnectionFine(ReuseBoltClientConnectionManager.java:183)
	at com.alipay.sofa.rpc.transport.bolt.BoltClientTransport.isAvailable(BoltClientTransport.java:169)
	at com.alipay.sofa.rpc.client.AllConnectConnectionHolder.doubleCheck(AllConnectConnectionHolder.java:775)
	at com.alipay.sofa.rpc.client.AllConnectConnectionHolder.doReconnect(AllConnectConnectionHolder.java:864)
	at com.alipay.sofa.rpc.client.AllConnectConnectionHolder.access$100(AllConnectConnectionHolder.java:61)
	at com.alipay.sofa.rpc.client.AllConnectConnectionHolder$5.run(AllConnectConnectionHolder.java:819)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
	at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)

   Locked ownable synchronizers:
	- <0x000000074e1ac110> (a java.util.concurrent.ThreadPoolExecutor$Worker)

Your scenes

describe your use scenes (why need this feature)

Your advice

describe the advice or solution you'd like

Environment

• SOFARPC version: 5.5.5
• JVM version (e.g. java -version): 1.8.0_161
• OS version (e.g. uname -a):
• Maven version:
• IDE version:

[nobodyiam]

is it the same as #839 (comment) ?

[it-linnan]

#839 (comment)

telnet 目标地址是通的

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.