Zero-divide ArithmeticException in org.infinispan.interceptors.CacheMgmtInterceptor.getAverageWriteTime() --------------------------------------------------------------------------------------------------------- Key: ISPN-5089 URL: https://issues.jboss.org/browse/ISPN-5089 Project: Infinispan Issue Type: Bug Components: Core Environment: JDG 6.3.1 (Infinispan 6.1.1.Final) and the current master seems the same. Reporter: Osamu Nagano Assignee: Tristan Tarrant Fix For: 7.1.0.Beta1 There are occasional {{java.lang.ArithmeticException: / by zero}} in server.log. It seems a part collecting statistics for MBean and they were actually collecting such data by JMX. {noformat} 2014-12-15 12:32:00.283 ERROR [org.infinispan.server.hotrod.HotRodDecoder] (HotRodServerWorker-491) ISPN005009: Unexpected error before any request parameters read: io.netty.handler.codec.DecoderException: org.infinispan.server.hotrod.HotRodException: java.lang.ArithmeticException: / by zero at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:417) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:141) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at org.infinispan.server.core.AbstractProtocolDecoder.channelRead(AbstractProtocolDecoder.scala:471) [infinispan.jar:6.1.1.Final-redhat-5] at io.netty.channel.DefaultChannelHandlerContext.invokeChannelRead(DefaultChannelHandlerContext.java:341) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.DefaultChannelHandlerContext.fireChannelRead(DefaultChannelHandlerContext.java:327) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:785) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:116) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:494) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:461) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:378) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:350) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:116) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] at java.lang.Thread.run(Thread.java:744) [rt.jar:1.7.0_55] Caused by: org.infinispan.server.hotrod.HotRodException: java.lang.ArithmeticException: / by zero at org.infinispan.server.hotrod.HotRodDecoder.createServerException(HotRodDecoder.scala:206) [infinispan.jar:6.1.1.Final-redhat-5] at org.infinispan.server.core.AbstractProtocolDecoder.decodeDispatch(AbstractProtocolDecoder.scala:77) [infinispan.jar:6.1.1.Final-redhat-5] at org.infinispan.server.core.AbstractProtocolDecoder.decode(AbstractProtocolDecoder.scala:61) [infinispan.jar:6.1.1.Final-redhat-5] at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:362) [netty-all-4.0.18.Final-redhat-1.jar:4.0.18.Final-redhat-1] ... 12 more Caused by: java.lang.ArithmeticException: / by zero at org.infinispan.interceptors.CacheMgmtInterceptor.getAverageWriteTime(CacheMgmtInterceptor.java:294) [infinispan-core-6.1.1.Final-redhat-5.jar:6.1.1.Final-redhat-5] at org.infinispan.stats.StatsImpl.<init>(StatsImpl.java:48) [infinispan-core-6.1.1.Final-redhat-5.jar:6.1.1.Final-redhat-5] at org.infinispan.CacheImpl.getStats(CacheImpl.java:884) [infinispan-core-6.1.1.Final-redhat-5.jar:6.1.1.Final-redhat-5] at org.infinispan.AbstractDelegatingAdvancedCache.getStats(AbstractDelegatingAdvancedCache.java:173) [infinispan-core-6.1.1.Final-redhat-5.jar:6.1.1.Final-redhat-5] at org.infinispan.server.hotrod.HotRodDecoder.createStatsResponse(HotRodDecoder.scala:161) [infinispan.jar:6.1.1.Final-redhat-5] at org.infinispan.server.core.AbstractProtocolDecoder.decodeHeader(AbstractProtocolDecoder.scala:147) [infinispan.jar:6.1.1.Final-redhat-5] at org.infinispan.server.core.AbstractProtocolDecoder.decodeDispatch(AbstractProtocolDecoder.scala:70) [infinispan.jar:6.1.1.Final-redhat-5] ... 14 more {noformat}