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java.lang.OutOfMemoryError: Java heap space	at java.util.HashMap.(HashMap.java:187)	at java.util.LinkedHashMap.(LinkedHashMap.java:160)	at java.util.HashSet.(HashSet.java:142)	at java.util.LinkedHashSet.(LinkedHashSet.java:129)	at com.datastax.driver.core.TypeCodec$SetCodec.deserialize(TypeCodec.java:1073)	at com.datastax.driver.core.TypeCodec$SetCodec.deserialize(TypeCodec.java:1001)	at com.datastax.driver.core.DataType.deserialize(DataType.java:606)	at com.datastax.driver.core.Responses$Result$Rows.toString(Responses.java:427)	at org.slf4j.helpers.MessageFormatter.safeObjectAppend(MessageFormatter.java:305)	at org.slf4j.helpers.MessageFormatter.deeplyAppendParameter(MessageFormatter.java:277)	at org.slf4j.helpers.MessageFormatter.arrayFormat(MessageFormatter.java:231)	at ch.qos.logback.classic.spi.LoggingEvent.getFormattedMessage(LoggingEvent.java:298)	at ch.qos.logback.classic.spi.LoggingEvent.prepareForDeferredProcessing(LoggingEvent.java:208)	at ch.qos.logback.core.OutputStreamAppender.subAppend(OutputStreamAppender.java:212)	at ch.qos.logback.core.OutputStreamAppender.append(OutputStreamAppender.java:103)	at ch.qos.logback.core.UnsynchronizedAppenderBase.doAppend(UnsynchronizedAppenderBase.java:88)	at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:48)	at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:273)	at ch.qos.logback.classic.Logger.callAppenders(Logger.java:260)	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:442)	at ch.qos.logback.classic.Logger.filterAndLog_2(Logger.java:433)	at ch.qos.logback.classic.Logger.trace(Logger.java:454)	at com.datastax.driver.core.Connection$Dispatcher.messageReceived(Connection.java:671)	at com.datastax.shaded.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(SimpleChannelUpstreamHandler.java:70)	at com.datastax.shaded.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)	at com.datastax.shaded.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)	at com.datastax.shaded.netty.channel.Channels.fireMessageReceived(Channels.java:296)	at com.datastax.shaded.netty.handler.codec.oneone.OneToOneDecoder.handleUpstream(OneToOneDecoder.java:70)	at com.datastax.shaded.netty.channel.DefaultChannelPipeline.sendUpstream(DefaultChannelPipeline.java:564)	at com.datastax.shaded.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(DefaultChannelPipeline.java:791)	at com.datastax.shaded.netty.channel.Channels.fireMessageReceived(Channels.java:296)	at com.datastax.shaded.netty.handler.codec.frame.FrameDecoder.unfoldAndFireMessageReceived(FrameDecoder.java:462)