Debug Output from Logstash for Grok Exception

Debug.out

{:timestamp=>"2016-01-09T22:32:28.528000-0500", :message=>"Using milestone 1 filter plugin 'seq'. This plugin should work, but would benefit from use by folks like you. Please let us know if you find bugs or have suggestions on how to improve this plugin.  For more information on plugin milestones, see http://logstash.net/docs/1.4.2/plugin-milestones", :level=>:warn}
{:timestamp=>"2016-01-09T22:32:28.580000-0500", :message=>"Using milestone 2 output plugin 'file'. This plugin should be stable, but if you see strange behavior, please let us know! For more information on plugin milestones, see http://logstash.net/docs/1.4.2/plugin-milestones", :level=>:warn}
{:timestamp=>"2016-01-09T22:32:28.871000-0500", :message=>"Grok regexp threw exception", :exception=>"63", :level=>:warn}
{:timestamp=>"2016-01-09T22:32:28.876000-0500", :message=>["org.jcodings.specific.UTF8Encoding.length(UTF8Encoding.java:35)", "org.jcodings.specific.BaseUTF8Encoding.mbcToCode(BaseUTF8Encoding.java:91)", "org.jcodings.specific.UTF8Encoding.mbcToCode(UTF8Encoding.java:24)", "org.jcodings.Encoding.isMbcWord(Encoding.java:459)", "org.joni.ByteCodeMachine.opWordBound(ByteCodeMachine.java:1054)", "org.joni.ByteCodeMachine.matchAt(ByteCodeMachine.java:239)", "org.joni.Matcher.matchCheck(Matcher.java:304)", "org.joni.Matcher.searchInterruptible(Matcher.java:457)", "org.jruby.RubyRegexp$SearchMatchTask.run(RubyRegexp.java:291)", "org.jruby.RubyThread.executeBlockingTask(RubyThread.java:1065)", "org.jruby.RubyRegexp.matcherSearch(RubyRegexp.java:253)", "org.jruby.RubyRegexp.search19(RubyRegexp.java:1797)", "org.jruby.RubyRegexp.matchPos(RubyRegexp.java:1737)", "org.jruby.RubyRegexp.match19Common(RubyRegexp.java:1718)", "org.jruby.RubyRegexp.match_m19(RubyRegexp.java:1697)", "org.jruby.RubyRegexp$INVOKER$i$match_m19.call(RubyRegexp$INVOKER$i$match_m19.gen)", "org.jruby.internal.runtime.methods.JavaMethod$JavaMethodOneOrNBlock.call(JavaMethod.java:350)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:168)", "org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)", "org.jruby.ast.LocalAsgnNode.interpret(LocalAsgnNode.java:123)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:198)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:168)", "org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)", "org.jruby.ast.DAsgnNode.interpret(DAsgnNode.java:110)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)", "org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206)", "org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:157)", "org.jruby.runtime.Block.yield(Block.java:142)", "org.jruby.RubyArray.eachCommon(RubyArray.java:1606)", "org.jruby.RubyArray.each(RubyArray.java:1613)", "org.jruby.RubyArray$INVOKER$i$0$0$each.call(RubyArray$INVOKER$i$0$0$each.gen)", "org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:143)", "org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:154)", "org.jruby.ast.CallNoArgBlockNode.interpret(CallNoArgBlockNode.java:64)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:182)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:198)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:168)", "org.jruby.ast.CallOneArgNode.interpret(CallOneArgNode.java:57)", "org.jruby.ast.MultipleAsgn19Node.interpret(MultipleAsgn19Node.java:104)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.IfNode.interpret(IfNode.java:118)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.RescueNode.executeBody(RescueNode.java:221)", "org.jruby.ast.RescueNode.interpret(RescueNode.java:116)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:268)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:230)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:236)", "org.jruby.ast.FCallThreeArgNode.interpret(FCallThreeArgNode.java:40)", "org.jruby.ast.IfNode.interpret(IfNode.java:110)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)", "org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206)", "org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:157)", "org.jruby.runtime.Block.yield(Block.java:142)", "org.jruby.RubyHash$13.visit(RubyHash.java:1352)", "org.jruby.RubyHash.visitLimited(RubyHash.java:643)", "org.jruby.RubyHash.visitAll(RubyHash.java:629)", "org.jruby.RubyHash.iteratorVisitAll(RubyHash.java:1303)", "org.jruby.RubyHash.each_pairCommon(RubyHash.java:1348)", "org.jruby.RubyHash.each19(RubyHash.java:1339)", "org.jruby.RubyHash$INVOKER$i$0$0$each19.call(RubyHash$INVOKER$i$0$0$each19.gen)", "org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:143)", "org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:154)", "org.jruby.ast.CallNoArgBlockNode.interpret(CallNoArgBlockNode.java:64)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:204)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:206)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:336)", "org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:179)", "org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:188)", "org.jruby.ast.CallOneArgBlockNode.interpret(CallOneArgBlockNode.java:60)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.IfNode.interpret(IfNode.java:116)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.IfNode.interpret(IfNode.java:116)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.IfNode.interpret(IfNode.java:116)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.IfNode.interpret(IfNode.java:116)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)", "org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206)", "org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:194)", "org.jruby.runtime.Interpreted19Block.call(Interpreted19Block.java:125)", "org.jruby.runtime.Block.call(Block.java:101)", "org.jruby.RubyProc.call(RubyProc.java:290)", "org.jruby.RubyProc.call19(RubyProc.java:271)", "org.jruby.RubyProc$INVOKER$i$0$0$call19.call(RubyProc$INVOKER$i$0$0$call19.gen)", "org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:210)", "org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:177)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:183)", "org.jruby.ast.CallOneArgBlockPassNode.interpret(CallOneArgBlockPassNode.java:60)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:204)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:206)", "org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:177)", "org.jruby.runtime.callsite.CachingCallSite.callIter(CachingCallSite.java:188)", "org.jruby.ast.FCallOneArgBlockNode.interpret(FCallOneArgBlockNode.java:34)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.ast.WhileNode.interpret(WhileNode.java:131)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.RescueNode.executeBody(RescueNode.java:221)", "org.jruby.ast.RescueNode.interpret(RescueNode.java:116)", "org.jruby.ast.BeginNode.interpret(BeginNode.java:83)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.ast.BlockNode.interpret(BlockNode.java:71)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_METHOD(ASTInterpreter.java:74)", "org.jruby.internal.runtime.methods.InterpretedMethod.call(InterpretedMethod.java:139)", "org.jruby.internal.runtime.methods.DefaultMethod.call(DefaultMethod.java:182)", "org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:306)", "org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:136)", "org.jruby.ast.VCallNode.interpret(VCallNode.java:88)", "org.jruby.ast.NewlineNode.interpret(NewlineNode.java:105)", "org.jruby.evaluator.ASTInterpreter.INTERPRET_BLOCK(ASTInterpreter.java:112)", "org.jruby.runtime.Interpreted19Block.evalBlockBody(Interpreted19Block.java:206)", "org.jruby.runtime.Interpreted19Block.yield(Interpreted19Block.java:194)", "org.jruby.runtime.Interpreted19Block.call(Interpreted19Block.java:125)", "org.jruby.runtime.Block.call(Block.java:101)", "org.jruby.RubyProc.call(RubyProc.java:290)", "org.jruby.RubyProc.call(RubyProc.java:228)", "org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:99)", "java.lang.Thread.run(Thread.java:745)"], :level=>:warn}