java.io.IOException：ピアによる接続リセットmemcached？

Question

memcachedに関する理由は何ですか？

ログ：

java.io.IOException: Connection reset by peer 
     at sun.nio.ch.FileDispatcherImpl.read0(Native Method) 
     at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) 
     at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) 
     at sun.nio.ch.IOUtil.read(IOUtil.java:192) 
     at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) 
     at net.spy.memcached.MemcachedConnection.handleReads(MemcachedConnection.java:820) 
     at net.spy.memcached.MemcachedConnection.handleReadsAndWrites(MemcachedConnection.java:720) 
     at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:683) 
     at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:436) 
     at net.spy.memcached.MemcachedConnection.run(MemcachedConnection.java:1446) 

サーバーをダウンさせるためにmemcachedの背後にある理由は何か。

以上のログ：

2017-06-14 15:43:42.446 INFO net.spy.memcached.MemcachedConnection: Reconnecting due to exception on {QA sa=/127.0.0.1:11211, #Rops=1, #Wops=0, #iq=0, topRop=Cmd: flush_all Delay: -1, topWop=null, toWrite=0, interested=1} 
java.io.IOException: Connection reset by peer 
     at sun.nio.ch.FileDispatcherImpl.read0(Native Method) 
     at sun.nio.ch.SocketDispatcher.read(SocketDispatcher.java:39) 
     at sun.nio.ch.IOUtil.readIntoNativeBuffer(IOUtil.java:223) 
     at sun.nio.ch.IOUtil.read(IOUtil.java:192) 
     at sun.nio.ch.SocketChannelImpl.read(SocketChannelImpl.java:380) 
     at net.spy.memcached.MemcachedConnection.handleReads(MemcachedConnection.java:820) 
     at net.spy.memcached.MemcachedConnection.handleReadsAndWrites(MemcachedConnection.java:720) 
     at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:683) 
     at net.spy.memcached.MemcachedConnection.handleIO(MemcachedConnection.java:436) 
     at net.spy.memcached.MemcachedConnection.run(MemcachedConnection.java:1446) 
2017-06-14 15:43:42.447 WARN net.spy.memcached.MemcachedConnection: Closing, and reopening {QA sa=/127.0.0.1:11211, #Rops=1, #Wops=0, #iq=0, topRop=Cmd: flush_all Delay: -1, topWop=null, toWrite=0, interested=1}, attempt 0. 
2017-06-14 15:43:42.447 WARN net.spy.memcached.protocol.ascii.AsciiMemcachedNodeImpl: Discarding partially completed op: Cmd: flush_all Delay: -1 
2017-06-14 15:43:44.449 INFO net.spy.memcached.MemcachedConnection: Reconnecting {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} 
2017-06-14 15:48:08.019 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
2017-06-14 15:52:33.464 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
2017-06-14 15:55:43.846 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
2017-06-14 15:55:44.481 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
2017-06-14 15:55:50.887 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
2017-06-14 15:56:08.993 INFO net.spy.memcached.MemcachedConnection: Added {QA sa=/127.0.0.1:11211, #Rops=0, #Wops=0, #iq=0, topRop=null, topWop=null, toWrite=0, interested=0} to connect queue 
java.io.IOException: Too many open files 
     at sun.nio.ch.IOUtil.makePipe(Native Method) 
     at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65) 
     at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36) 
     at java.nio.channels.Selector.open(Selector.java:227) 
     at net.spy.memcached.MemcachedConnection.<init>(MemcachedConnection.java:265) 
     at net.spy.memcached.DefaultConnectionFactory.createConnection(DefaultConnectionFactory.java:209) 
     at net.spy.memcached.MemcachedClient.<init>(MemcachedClient.java:209) 
     at net.spy.memcached.MemcachedClient.<init>(MemcachedClient.java:169) 
     at com.gta.user.dao.UserRepositoryComponentMongodbImpl$UserRepositoryImpl.updateWipUser(UserRepositoryComponentMongodbImpl.scala:95) 
     at com.gta.interimaccounts.services.InterimAccountServiceComponentImpl$InterimAccountServiceImpl.updateWipUserForInterim(InterimAccountServiceComponentImpl.scala:142) 
     at com.gta.interimaccounts.services.InterimAccountServiceComponentImpl$InterimAccountServiceImpl.createInterimAccount(InterimAccountServiceComponentImpl.scala:112) 
     at com.gta.interimaccounts.services.InterimAccountsActor$$anonfun$receive$1.applyOrElse(InterimAccountsActor.scala:79) 
     at akka.actor.Actor$class.aroundReceive(Actor.scala:467) 
     at com.gta.interimaccounts.services.InterimAccountsActor.aroundReceive(InterimAccountsActor.scala:27) 
     at akka.actor.ActorCell.receiveMessage(ActorCell.scala:516) 
     at akka.actor.ActorCell.invoke(ActorCell.scala:487) 
     at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:254) 
     at akka.dispatch.Mailbox.run(Mailbox.scala:221) 
     at akka.dispatch.Mailbox.exec(Mailbox.scala:231) 
     at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260) 
     at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339) 
     at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979) 
     at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107) 
[ERROR] [06/14/2017 15:56:10.173] [gta-api-akka.actor.default-dispatcher-2424] [akka://gta-api/user/$e] Too many open files 
java.io.IOException: Too many open files 
     at sun.nio.ch.IOUtil.makePipe(Native Method) 
     at sun.nio.ch.EPollSelectorImpl.<init>(EPollSelectorImpl.java:65) 
     at sun.nio.ch.EPollSelectorProvider.openSelector(EPollSelectorProvider.java:36) 
     at java.nio.channels.Selector.open(Selector.java:227) 
     at net.spy.memcached.MemcachedConnection.<init>(MemcachedConnection.java:265) 
     at net.spy.memcached.DefaultConnectionFactory.createConnection(DefaultConnectionFactory.java:209) 
     at net.spy.memcached.MemcachedClient.<init>(MemcachedClient.java:209) 
     at net.spy.memcached.MemcachedClient.<init 

Answer 1

あなたがLinuxのマシンを使用している場合、システムによって設定low limitのようです。端末に次のように入力して制限を確認してください。

ulimit -a 

低ければ、それを増やす必要があります。 tutorial