The string contains only 4 letters which is a keyword of a specific device. Something like "ABCD". And getBytes() method converts this string into byte.
Emre -----Original Message----- From: Emmanuel Lécharny [mailto:[email protected]] Sent: Friday, February 14, 2014 5:15 PM To: [email protected] Subject: Re: Mina 2.0.7 UDP Issue Le 2/14/14 3:32 PM, Emre Baykal a écrit : > It was 1.1.7 before. > Using jstack helped me monitoring the behaviour. Thread is called > NioDatagramAcceptor-3. This thread consumes 100% cpu. Expected. The question is where does this thread consume this CPU. > Code is exactly the same. When I switch back to 1.1.7, it functions without > any problem. It seems to me that threading shows strange behaviour at some > point and can not get killed. This stack trace does not gie intersting information. I would be interested to know what does the String contain, but this is not where your code is blocking. > > "NioDatagramAcceptor-3" prio=10 tid=0x00007f5ae4989000 nid=0x5420 runnable > [0x00007f5ae9b31000] > java.lang.Thread.State: RUNNABLE > at sun.nio.cs.UTF_8.updatePositions(UTF_8.java:58) > at sun.nio.cs.UTF_8$Encoder.encodeArrayLoop(UTF_8.java:392) > at sun.nio.cs.UTF_8$Encoder.encodeLoop(UTF_8.java:447) > at java.nio.charset.CharsetEncoder.encode(CharsetEncoder.java:544) > at java.lang.StringCoding$StringEncoder.encode(StringCoding.java:240) > at java.lang.StringCoding.encode(StringCoding.java:272) > at java.lang.StringCoding.encode(StringCoding.java:284) > at java.lang.String.getBytes(String.java:986) > at > com.blo.handler.network.mu.codecs.gprs.inbound.PacketDecoder.decodable(PacketDecoder.java:59) > at > org.apache.mina.filter.codec.demux.DemuxingProtocolDecoder.doDecode(DemuxingProtocolDecoder.java:141) > at > org.apache.mina.filter.codec.CumulativeProtocolDecoder.decode(CumulativeProtocolDecoder.java:126) > at > org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecFilter.java:232) > - locked <0x0000000780673480> (a > org.apache.mina.filter.codec.ProtocolCodecFilter$ProtocolDecoderOutputImpl) > at > org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:417) > at > org.apache.mina.core.filterchain.DefaultIoFilterChain.access$1200(DefaultIoFilterChain.java:47) > at > org.apache.mina.core.filterchain.DefaultIoFilterChain$EntryImpl$1.messageReceived(DefaultIoFilterChain.java:765) > at > org.apache.mina.core.filterchain.IoFilterAdapter.messageReceived(IoFilterAdapter.java:109) > at > org.apache.mina.core.filterchain.DefaultIoFilterChain.callNextMessageReceived(DefaultIoFilterChain.java:417) > at > org.apache.mina.core.filterchain.DefaultIoFilterChain.fireMessageReceived(DefaultIoFilterChain.java:410) > at > org.apache.mina.core.polling.AbstractPollingConnectionlessIoAcceptor.readHandle(AbstractPollingConnectionlessIoAcceptor.java:701) > at > org.apache.mina.core.polling.AbstractPollingConnectionlessIoAcceptor.processReadySessions(AbstractPollingConnectionlessIoAcceptor.java:670) > at > org.apache.mina.core.polling.AbstractPollingConnectionlessIoAcceptor.access$800(AbstractPollingConnectionlessIoAcceptor.java:61) > at > org.apache.mina.core.polling.AbstractPollingConnectionlessIoAcceptor$Acceptor.run(AbstractPollingConnectionlessIoAcceptor.java:607) > at > org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:64) > at > java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) > at java.lang.Thread.run(Thread.java:662) > > Emre > > -----Original Message----- > From: Emmanuel Lécharny [mailto:[email protected]] > Sent: Friday, February 14, 2014 3:53 PM > To: [email protected] > Subject: Re: Mina 2.0.7 UDP Issue > > Le 2/14/14 2:27 PM, Emre Baykal a écrit : >> Hi everyone, >> >> I have recently migrated my application to Mina 2.0.7 and since then I am >> having trouble with UDP connections. It seems like NioDatagramAcceptor is >> not functioning well and sometimes it ends up with deadlock. Besides, this >> deadlock causes high CPU consumption. Does anyone know anything about this >> issue, or has it been fixed before? > Can you be a bit more explicit ? Sentences like "NioDatagramAcceptor is not > functioning well" are not exactly helping us helping you... > > Have you some stack trace when your application deadlocks ?Also what version > of MINA where you using before ? > > > -- > Regards, > Cordialement, > Emmanuel Lécharny > www.iktek.com > -- Regards, Cordialement, Emmanuel Lécharny www.iktek.com
