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Automatically exported from code.google.com/p/xmemcached
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Session has been closed & There is no available connection at this moment #143

Closed GoogleCodeExporter closed 8 years ago

GoogleCodeExporter commented 8 years ago 
错误信息如下.
根据用户手册配置的连接池. 开了个2连接.
xmemcached 1.3.2

这个主要问题是在哪? 
项目连续跑了1个月一直没出现这个问题, 今天才出现.
-------------------

08:59:18.871 [Xmemcached-Reactor-1] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.123:11222
08:59:18.874 ["http-bio-80"-exec-140] ERROR c.izp.adwib.base.dao.MemcacheDao - 
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
net.rubyeye.xmemcached.exception.MemcachedException: 
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
        at net.rubyeye.xmemcached.XMemcachedClient.checkException(XMemcachedClient.java:1813) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.fetch0(XMemcachedClient.java:572) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get0(XMemcachedClient.java:965) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:923) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:934) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:956) ~[xmemcached-1.3.2.jar:na]

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) [servlet-api.jar:na]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) [servlet-api.jar:na]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) [catalina.jar:7.0.16]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.16]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:403) [catalina.jar:7.0.16]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:301) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:162) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:140) [tomcat-coyote.jar:7.0.16]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) [tomcat-coyote.jar:7.0.16]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_24]
        at java.lang.Thread.run(Thread.java:662) [na:1.6.0_24]
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
        at net.rubyeye.xmemcached.impl.MemcachedTCPSession.destroy(MemcachedTCPSession.java:115) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.impl.MemcachedHandler.onSessionClosed(MemcachedHandler.java:136) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.core.impl.AbstractSession.onClosed(AbstractSession.java:305) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.core.impl.AbstractSession.close(AbstractSession.java:293) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.NioTCPSession.readFromBuffer(NioTCPSession.java:216) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.AbstractNioSession.onRead(AbstractNioSession.java:198) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.AbstractNioSession.onEvent(AbstractNioSession.java:343) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.SocketChannelController.dispatchReadEvent(SocketChannelController.java:56) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.NioController.onRead(NioController.java:157) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.Reactor.dispatchEvent(Reactor.java:294) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.Reactor.run(Reactor.java:141) ~[xmemcached-1.3.2.jar:na]
08:59:20.872 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.254:11222 for 1 times
08:59:20.873 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.254:11222
08:59:20.876 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.254:11222 for 1 times
08:59:20.876 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.254:11222
08:59:45.859 [Xmemcached-Reactor-4] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.254:11222
08:59:45.859 [Xmemcached-Reactor-5] ERROR n.r.x.c.b.BinaryStoreCommand - 
Invalid arguments.
08:59:45.859 [Xmemcached-Reactor-5] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.254:11222
08:59:47.861 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.254:11222 for 1 times
08:59:47.862 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.254:11222
08:59:47.865 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.254:11222 for 1 times
08:59:47.865 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.254:11222
08:59:50.661 [Xmemcached-Reactor-2] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.254:11222
08:59:50.661 [Xmemcached-Reactor-7] ERROR n.r.x.c.b.BinaryStoreCommand - 
Invalid arguments.

....

09:01:58.110 ["http-bio-80"-exec-211] ERROR ********** - There is no available 
connection at this moment
net.rubyeye.xmemcached.exception.MemcachedException: There is no available 
connection at this moment
        at net.rubyeye.xmemcached.impl.MemcachedConnector.send(MemcachedConnector.java:454) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.sendCommand(XMemcachedClient.java:245) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.sendStoreCommand(XMemcachedClient.java:2328) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.setWithNoReply(XMemcachedClient.java:1263) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.setWithNoReply(XMemcachedClient.java:1254) ~[xmemcached-1.3.2.jar:na]

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) [servlet-api.jar:na]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) [servlet-api.jar:na]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) [catalina.jar:7.0.16]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.16]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:403) [catalina.jar:7.0.16]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:301) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:162) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:140) [tomcat-coyote.jar:7.0.16]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) [tomcat-coyote.jar:7.0.16]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_24]
        at java.lang.Thread.run(Thread.java:662) [na:1.6.0_24]

Original issue reported on code.google.com by xqing...@gmail.com on 28 Jul 2011 at 1:06

GoogleCodeExporter commented 8 years ago 
后来有没有恢复？

在此之前的异常能不能贴出来。

Original comment by killme2...@gmail.com on 28 Jul 2011 at 1:38

GoogleCodeExporter commented 8 years ago 
嗯嗯.

下面就是一个整体错误快,  其他都是循环这个同样的错误, 
偶然出个"There is no available connection at this moment".

-----------
10:03:58.102 [Xmemcached-Reactor-13] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.123:11222
10:04:00.104 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.123:11222 for 1 times
10:04:00.104 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.123:11222
10:04:00.109 [Heal-Session-Thread] WARN  c.g.c.y.c.i.AbstractController - 
Trying to connect to 10.10.2.123:11222 for 1 times
10:04:00.109 [Xmemcached-Reactor-0] WARN  c.g.c.y.c.i.AbstractController - Add 
a session: 10.10.2.123:11222
10:08:10.955 [Xmemcached-Reactor-15] WARN  c.g.c.y.c.i.AbstractController - 
Remove a session: 10.10.2.123:11222
10:08:10.961 ["http-bio-80"-exec-16] ERROR *************** - 
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
net.rubyeye.xmemcached.exception.MemcachedException: 
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
        at net.rubyeye.xmemcached.XMemcachedClient.checkException(XMemcachedClient.java:1813) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.fetch0(XMemcachedClient.java:572) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get0(XMemcachedClient.java:965) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:923) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:934) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:956) ~[xmemcached-1.3.2.jar:na]

        at javax.servlet.http.HttpServlet.service(HttpServlet.java:641) [servlet-api.jar:na]
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) [servlet-api.jar:na]
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304) [catalina.jar:7.0.16]
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100) [catalina.jar:7.0.16]
        at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563) [catalina.jar:7.0.16]
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) [catalina.jar:7.0.16]
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:403) [catalina.jar:7.0.16]
        at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:301) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:162) [tomcat-coyote.jar:7.0.16]
        at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:140) [tomcat-coyote.jar:7.0.16]
        at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:309) [tomcat-coyote.jar:7.0.16]
        at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) [na:1.6.0_24]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) [na:1.6.0_24]
        at java.lang.Thread.run(Thread.java:662) [na:1.6.0_24]
net.rubyeye.xmemcached.exception.MemcachedException: Session has been closed
        at net.rubyeye.xmemcached.impl.MemcachedTCPSession.destroy(MemcachedTCPSession.java:115) ~[xmemcached-1.3.2.jar:na]
        at net.rubyeye.xmemcached.impl.MemcachedHandler.onSessionClosed(MemcachedHandler.java:136) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.core.impl.AbstractSession.onClosed(AbstractSession.java:305) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.core.impl.AbstractSession.close(AbstractSession.java:293) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.NioTCPSession.readFromBuffer(NioTCPSession.java:216) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.AbstractNioSession.onRead(AbstractNioSession.java:198) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.AbstractNioSession.onEvent(AbstractNioSession.java:343) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.SocketChannelController.dispatchReadEvent(SocketChannelController.java:56) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.NioController.onRead(NioController.java:157) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.Reactor.dispatchEvent(Reactor.java:294) ~[xmemcached-1.3.2.jar:na]
        at com.google.code.yanf4j.nio.impl.Reactor.run(Reactor.java:141) ~[xmemcached-1.3.2.jar:na]
10:08:10.961 [Xmemcached-Reactor-12] ERROR n.r.x.c.b.BinaryStoreCommand - 
Invalid arguments.

Original comment by xqing...@gmail.com on 28 Jul 2011 at 2:17

GoogleCodeExporter commented 8 years ago 
我是想看这个异常的完整堆栈 

08:59:50.661 [Xmemcached-Reactor-7] ERROR n.r.x.c.b.BinaryStoreCommand - 
Invalid arguments.

Original comment by killme2...@gmail.com on 28 Jul 2011 at 2:20

GoogleCodeExporter commented 8 years ago 
ERROR n.r.x.c.b.BinaryStoreCommand - Invalid arguments. 
这个异常就这么一条. 没有堆栈信息.

Original comment by xqing...@gmail.com on 28 Jul 2011 at 2:43

GoogleCodeExporter commented 8 years ago 
你在你们的日志里grep下Invalid 
arguments，看看有没有其他日志，可能是被jvm优化忽略调堆栈��
�。

Original comment by killme2...@gmail.com on 28 Jul 2011 at 2:44

GoogleCodeExporter commented 8 years ago 
  关于"Invalid arguments"就只一条, 没有其他的信息, 整个日志200+M都是这个上面日志循环的..

Original comment by xqing...@gmail.com on 28 Jul 2011 at 2:56

GoogleCodeExporter commented 8 years ago 
重启了还有这个现象吗？

我查看下代码，这个问题是由于某个暂时还不知道原因，导��
�xmc到memcached的连接被断开。

我建议你在出问题的机器上，用telnet连上你们的memached，执行
get命令，等待一段时间，看看有没有自动断开，排除网络问��
�。

Original comment by killme2...@gmail.com on 28 Jul 2011 at 3:00

GoogleCodeExporter commented 8 years ago 
  这个只是一直在报错. 但是项目还是在正常运行. 我先试试你给的方案.

Original comment by xqing...@gmail.com on 28 Jul 2011 at 3:03

GoogleCodeExporter commented 8 years ago 
我看到的貌似是10.10.2.123:11222 这台有问题。

Original comment by killme2...@gmail.com on 28 Jul 2011 at 3:05

GoogleCodeExporter commented 8 years ago 
我就用了这一台memcached...

Original comment by xqing...@gmail.com on 28 Jul 2011 at 3:16

GoogleCodeExporter commented 8 years ago 
后续进展？

Original comment by killme2...@gmail.com on 28 Jul 2011 at 12:29

GoogleCodeExporter commented 8 years ago 
 现在还在报同样的错误.  现在已经有2G的同样错误日志了..

Original comment by xqing...@gmail.com on 29 Jul 2011 at 3:31

GoogleCodeExporter commented 8 years ago 
很诡异，不影响使用吗？你们不重启吗？这个异常很频繁吗��
�大概间隔在多少

Original comment by killme2...@gmail.com on 29 Jul 2011 at 3:41

GoogleCodeExporter commented 8 years ago 
   晕. 刚又看了下, 日志5G了..  刷屏一样.

There is no available connection at this moment

Original comment by xqing...@gmail.com on 29 Jul 2011 at 3:50

GoogleCodeExporter commented 8 years ago 
重启了？

Original comment by killme2...@gmail.com on 29 Jul 2011 at 9:53

GoogleCodeExporter commented 8 years ago 
   已经快抗不住了..  一天就这个的日志大约40G. 并发也就在300/s.

   connectionPoolSize=2

------------------------------------------
stats
STAT pid 5405
STAT uptime 5865491
STAT time 1312177759
STAT version 1.4.5
STAT pointer_size 64
STAT rusage_user 10158.398688
STAT rusage_system 20704.232478
STAT curr_connections 15
STAT total_connections 57174
STAT connection_structures 359
STAT cmd_get 1380790177
STAT cmd_set 473245495
STAT cmd_flush 30
STAT get_hits 1319491560
STAT get_misses 61298617
STAT delete_misses 0
STAT delete_hits 2
STAT incr_misses 0
STAT incr_hits 0
STAT decr_misses 0
STAT decr_hits 0
STAT cas_misses 0
STAT cas_hits 0
STAT cas_badval 0
STAT auth_cmds 0
STAT auth_errors 0
STAT bytes_read 315299263037
STAT bytes_written 1306721159367
STAT limit_maxbytes 10307502080
STAT accepting_conns 1
STAT listen_disabled_num 0
STAT threads 4
STAT conn_yields 81098
STAT bytes 9121848893
STAT curr_items 26562683
STAT total_items 473245495
STAT evictions 45568465
STAT reclaimed 37497505
END

Original comment by xqing...@gmail.com on 1 Aug 2011 at 5:51

GoogleCodeExporter commented 8 years ago 
读取300G，300/S不至于出这样的问题，检查下网络或者是尝试��
�台服务器。

Original comment by springda...@gmail.com on 4 Aug 2011 at 1:06

GoogleCodeExporter commented 8 years ago 
请问下，有没有后续消息？

Original comment by killme2...@gmail.com on 5 Sep 2011 at 1:07

GoogleCodeExporter commented 8 years ago 
具体原因没找到.  现改用redis了..  继续关注xmemcached中.

Original comment by xqing...@gmail.com on 6 Sep 2011 at 8:52

GoogleCodeExporter commented 8 years ago 
这个问题很奇怪，不过你们已经改用redis了，遗憾。
我最近修正了二进制协议解析的一个bug，可能会引起连接的��
�正常断开，如果你们还用memcached，也许可以尝试下即将发布�
��1.3.4

Original comment by killme2...@gmail.com on 7 Sep 2011 at 11:30

GoogleCodeExporter commented 8 years ago

Original comment by killme2...@gmail.com on 26 Mar 2012 at 10:35

GoogleCodeExporter commented 8 years ago 
我用的版本是 xmemcached-1.2.6.2.jar ； Memcached版本是：1.2.0  
也出现一堆的 
Caused by: java.util.concurrent.TimeoutException: Timed out(3000) waiting for 
operation
        at net.rubyeye.xmemcached.XMemcachedClient.latchWait(XMemcachedClient.java:2230) ~[XMemcachedClient.class:na]
        at net.rubyeye.xmemcached.XMemcachedClient.fetch0(XMemcachedClient.java:513) ~[XMemcachedClient.class:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get0(XMemcachedClient.java:879) ~[XMemcachedClient.class:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:837) ~[XMemcachedClient.class:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:848) ~[XMemcachedClient.class:na]
        at net.rubyeye.xmemcached.XMemcachedClient.get(XMemcachedClient.java:870) ~[XMemcachedClient.class:na]

        ... 74 common frames omitted

同时伴随着：

05-22 08:36:33.360  WARN c.s.t.c.c.c.i.m.XmemcachedCacheNoRuntimeException:49 - 
Memcached Fail Exception: net.rubyeye.xmemcached.exception.MemcachedException: 
There is no available connection at this moment
java.lang.RuntimeException: 
net.rubyeye.xmemcached.exception.MemcachedException: There is no available 
connection at this moment

但是我的没有 net.rubyeye.xmemcached.exception.MemcachedException: Session 
has been closed

配置的是一个连接，但是有两个Memcached的服务源，不同的数��
�源。事故发生时，连接状态是正常的：
[@zw_83_84 paicha]# grep 10.11.132.56 netstat_84_fail_0522.txt
tcp        0      0 10.10.83.84:6868            10.11.132.56:11212          
ESTABLISHED 25386/java          
tcp        0      0 10.10.83.84:54908           10.11.132.56:11211          
ESTABLISHED 25386/java

Original comment by teneb...@gmail.com on 22 May 2012 at 8:37

GoogleCodeExporter commented 8 years ago 
补充： 日平均是 1.7K Request/Second  读操作远远高于写操作。

Original comment by teneb...@gmail.com on 22 May 2012 at 8:39

GoogleCodeExporter commented 8 years ago 
[deleted comment]
GoogleCodeExporter commented 8 years ago 
@ teneb...@gmail.com
我的也出现了这样状况，你们怎么解决的？

Original comment by wyant...@gmail.com on 21 Apr 2014 at 4:59