OutOfMemoryError in Cassandra

Question

Zu viele OutOfMemoryError ist aufgetreten und Cassandra-Dienst beendet.

 WARN [New I/O worker #22] 2016-11-03 10:38:15,083 Slf4JLogger.java (line 76) Unexpected exception in the selector loop. 
java.lang.OutOfMemoryError: Direct buffer memory 
     at java.nio.Bits.reserveMemory(Bits.java:658) 
     at java.nio.DirectByteBuffer.<init>(DirectByteBuffer.java:123) 
     at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:306) 
     at org.jboss.netty.channel.socket.nio.SocketReceiveBufferAllocator.newBuffer(SocketReceiveBufferAllocator.java:64) 
     at org.jboss.netty.channel.socket.nio.SocketReceiveBufferAllocator.get(SocketReceiveBufferAllocator.java:44) 
     at org.jboss.netty.channel.socket.nio.NioWorker.read(NioWorker.java:62) 
     at org.jboss.netty.channel.socket.nio.AbstractNioWorker.process(AbstractNioWorker.java:109) 
     at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:312) 
     at org.jboss.netty.channel.socket.nio.AbstractNioWorker.run(AbstractNioWorker.java:90) 
     at org.jboss.netty.channel.socket.nio.NioWorker.run(NioWorker.java:178) 
     at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
     at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
     at java.lang.Thread.run(Thread.java:745) 

Kann mir jemand helfen, rootcause zu finden? Ich benutze Cassandra-2.0.9 und netty-3.6.6.Final.jar.

Answer 1

Sie müssen einen Heap-Dump anfordern und ihn überprüfen.