Exception during sketch aggregations while using Result level cache

[swapnilpandit]

As part of #4843 proposal Result level cache was introduced in durid with #5028. When a theta sketch is used in a metric, druid broker attempts to deserialize a precomputed sketch result stored in a result level cache and fails with an exception from SketchAggregatorFactory. This error is thrown in TopN, GroupBy and Time series queries.

Exception stack trace:
2018-10-16 18:33:31.866 [qtp1084339924-262[timeseries_[audience_insights_theta]_a1e1363b-e0d5-48f3-8732-9341e2d7fdf1]] ERROR org.apache.druid.java.util.common.logger.Logger.error(Logger.java:123)o - Exception handling request: {class=org.apache.druid.server.QueryResource, exceptionType=class org.apache.druid.java.util.common.ISE, exceptionMessage=Object is not of a type[class java.lang.Double] that can be deserialized to sketch., exception=org.apache.druid.java.util.common.ISE: Object is not of a type[class java.lang.Double] that can be deserialized to sketch. at org.apache.druid.query.aggregation.datasketches.theta.SketchHolder.deserialize(SketchHolder.java:219) ~[?:?] at org.apache.druid.query.aggregation.datasketches.theta.SketchAggregatorFactory.deserialize(SketchAggregatorFactory.java:83) ~[?:?] at org.apache.druid.query.timeseries.TimeseriesQueryQueryToolChest$4$1.apply(TimeseriesQueryQueryToolChest.java:322) ~[druid-processing-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.query.timeseries.TimeseriesQueryQueryToolChest$4$1.apply(TimeseriesQueryQueryToolChest.java:306) ~[druid-processing-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.java.util.common.guava.MappingYieldingAccumulator.accumulate(MappingYieldingAccumulator.java:61) ~[java-util-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.java.util.common.guava.BaseSequence.makeYielder(BaseSequence.java:88) ~[java-util-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.java.util.common.guava.BaseSequence.toYielder(BaseSequence.java:67) ~[java-util-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.java.util.common.guava.MappedSequence.toYielder(MappedSequence.java:49) ~[java-util-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.java.util.common.guava.Yielders.each(Yielders.java:32) ~[java-util-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.server.QueryResource.doPost(QueryResource.java:201) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at sun.reflect.GeneratedMethodAccessor161.invoke(Unknown Source) ~[?:?] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[?:1.8.0_60] at java.lang.reflect.Method.invoke(Method.java:497) ~[?:1.8.0_60] at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$ResponseOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:205) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:302) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1542) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1473) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1419) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1409) [jersey-server-1.19.3.jar:1.19.3] at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:409) [jersey-servlet-1.19.3.jar:1.19.3] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:558) [jersey-servlet-1.19.3.jar:1.19.3] at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:733) [jersey-servlet-1.19.3.jar:1.19.3] at javax.servlet.http.HttpServlet.service(HttpServlet.java:790) [javax.servlet-api-3.1.0.jar:3.1.0] at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:286) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:276) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:181) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.FilterChainInvocation.doFilter(FilterChainInvocation.java:85) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:120) [guice-servlet-4.1.0.jar:?] at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:135) [guice-servlet-4.1.0.jar:?] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.apache.druid.server.security.PreResponseAuthorizationCheckFilter.doFilter(PreResponseAuthorizationCheckFilter.java:84) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.apache.druid.server.security.AllowOptionsResourceFilter.doFilter(AllowOptionsResourceFilter.java:76) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.apache.druid.server.security.AllowAllAuthenticator$1.doFilter(AllowAllAuthenticator.java:85) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.apache.druid.server.security.AuthenticationWrappingFilter.doFilter(AuthenticationWrappingFilter.java:60) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.apache.druid.server.security.SecuritySanityCheckFilter.doFilter(SecuritySanityCheckFilter.java:88) [druid-server-0.13.0-incubating-rc1.jar:0.13.0-incubating-rc1] at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1642) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:533) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1595) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:255) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1253) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:203) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:473) [jetty-servlet-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1564) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:201) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1155) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:144) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.gzip.GzipHandler.handle(GzipHandler.java:724) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:61) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.StatisticsHandler.handle(StatisticsHandler.java:169) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:132) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.Server.handle(Server.java:531) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:352) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:260) [jetty-server-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:281) [jetty-io-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:102) [jetty-io-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.io.ChannelEndPoint$2.run(ChannelEndPoint.java:118) [jetty-io-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:333) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:310) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:168) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:126) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:366) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:760) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:678) [jetty-util-9.4.10.v20180503.jar:9.4.10.v20180503] at java.lang.Thread.run(Thread.java:745) [?:1.8.0_60]