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Keith Wall edited comment on QPID-8130 at 3/15/18 8:54 AM: ----------------------------------------------------------- As we are on Java 8, we can use: {noformat} Comparator.comparingLong(LogFileDetails::getLastModified){noformat} For the record, I checked elsewhere in the Broker-J code base and did not find other occasions where the same mistake is made. was (Author: k-wall): As we are on Java 8, we can use: {noformat} Comparator.comparingLong(LogFileDetails::getLastModified){noformat} > [Broker-J] IAE "Comparison method violates its general contract!" can be > thrown whilst comparing log file details of file logger > -------------------------------------------------------------------------------------------------------------------------------- > > Key: QPID-8130 > URL: https://issues.apache.org/jira/browse/QPID-8130 > Project: Qpid > Issue Type: Bug > Components: Broker-J > Affects Versions: qpid-java-broker-7.0.2, qpid-java-6.0.8, > qpid-java-broker-7.0.0, qpid-java-6.1.5, qpid-java-broker-7.0.1 > Reporter: Alex Rudyy > Assignee: Alex Rudyy > Priority: Minor > Fix For: qpid-java-6.1.6, qpid-java-broker-7.0.3 > > > IllegalArgumentException "Comparison method violates its general contract!" > can be thrown whilst comparing log file details of BrokerFileLogger or > ViortualHostFileLogger > {noformat} > 2018-03-14 13:06:57,951 DEBUG [qtp127624166-218] > (o.a.q.s.m.p.s.r.RestServlet) - IllegalArgumentException processing request > java.lang.IllegalArgumentException: Comparison method violates its general > contract! > at java.util.TimSort.mergeHi(TimSort.java:899) > at java.util.TimSort.mergeAt(TimSort.java:516) > at java.util.TimSort.mergeForceCollapse(TimSort.java:457) > at java.util.TimSort.sort(TimSort.java:254) > at java.util.Arrays.sort(Arrays.java:1512) > at java.util.ArrayList.sort(ArrayList.java:1454) > at java.util.Collections.sort(Collections.java:175) > at > org.apache.qpid.server.logging.logback.RolloverWatcher.getLogFileDetails(RolloverWatcher.java:130) > at > org.apache.qpid.server.logging.logback.BrokerFileLoggerImpl.getLogFiles(BrokerFileLoggerImpl.java:156) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) > at java.lang.reflect.Method.invoke(Method.java:498) > at > org.apache.qpid.server.model.ConfiguredObjectMethodAttributeOrStatistic.getValue(ConfiguredObjectMethodAttributeOrStatistic.java:68) > at > org.apache.qpid.server.model.ConfiguredObjectMethodAttribute.getValue(ConfiguredObjectMethodAttribute.java:26) > at > org.apache.qpid.server.model.AbstractConfiguredObject.getAttribute(AbstractConfiguredObject.java:1856) > at > org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.incorporateAttributesIntoMap(ConfiguredObjectToMapConverter.java:86) > at > org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.convertObjectToMap(ConfiguredObjectToMapConverter.java:64) > at > org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.incorporateChildrenIntoMap(ConfiguredObjectToMapConverter.java:271) > at > org.apache.qpid.server.management.plugin.servlet.rest.ConfiguredObjectToMapConverter.convertObjectToMap(ConfiguredObjectToMapConverter.java:69) > at > org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.doGet(RestServlet.java:247) > at > org.apache.qpid.server.management.plugin.servlet.rest.AbstractServlet.doGet(AbstractServlet.java:128) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:687) > at > org.apache.qpid.server.management.plugin.servlet.rest.RestServlet.service(RestServlet.java:341) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) > at > org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:841) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1634) > at > org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter$1.run(AuthenticationCheckFilter.java:157) > at > org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter$1.run(AuthenticationCheckFilter.java:153) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:422) > at > org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilterChainAs(AuthenticationCheckFilter.java:152) > at > org.apache.qpid.server.management.plugin.filter.AuthenticationCheckFilter.doFilter(AuthenticationCheckFilter.java:122) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) > at > org.apache.qpid.server.management.plugin.filter.LoggingFilter.doFilter(LoggingFilter.java:63) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) > at > org.apache.qpid.server.management.plugin.filter.ForbiddingTraceFilter.doFilter(ForbiddingTraceFilter.java:65) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) > at > org.eclipse.jetty.servlets.CrossOriginFilter.handle(CrossOriginFilter.java:308) > at > org.eclipse.jetty.servlets.CrossOriginFilter.doFilter(CrossOriginFilter.java:262) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) > at > org.apache.qpid.server.management.plugin.filter.ExceptionHandlingFilter.doFilter(ExceptionHandlingFilter.java:59) > at > org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1621) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:541) > at > org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1593) > at > org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:188) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1239) > at > org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:168) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:481) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1562) > at > org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:166) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1141) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) > at org.eclipse.jetty.server.Server.handle(Server.java:564) > at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320) > at > org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251) > at > org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:279) > at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:110) > at > org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:124) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:672) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:590) > at > org.apache.qpid.server.bytebuffer.QpidByteBufferFactory.lambda$null$0(QpidByteBufferFactory.java:464) > at java.lang.Thread.run(Thread.java:745) > {noformat} > The exception can be thrown on attempt to get value of derived attribute > {{logFiles}} in {{FileLoger}}. As result, REST calls to {{FileLoger}} can > end-up in error as below > {code:java} > { > "errorMessage" : "Comparison method violates its general contract!" > } > {code} > Broker REST service call can be affected if depth parameter value is 1 or > greater. > The Web Management Console invokes broker REST service with depth=1 and on > running into the issue the information on Broker tab is not rendered. > Otherwise the operation of the Broker is not affected. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@qpid.apache.org For additional commands, e-mail: dev-h...@qpid.apache.org