# Logstash multiline codec makes logstash unresponsive! **URL:** \ **Category:** Logstash\ **Created:** [July 26, 2018, 6:45am UTC](https://discuss.elastic.co/t/logstash-multiline-codec-makes-logstash-unresponsive/141703 "2018-07-26T06:45:10Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![shahrukhkhan](https://avatars.discourse-cdn.com/v4/letter/s/d07c76/32.png) [@shahrukhkhan](https://discuss.elastic.co/u/shahrukhkhan)\ **Post date:** [July 26, 2018, 6:45am UTC](https://discuss.elastic.co/t/logstash-multiline-codec-makes-logstash-unresponsive/141703/1 "2018-07-26T06:45:10Z")
Hey, so i had written an input configuration for reading GC log files(which are actually on size based rolling) and used multiline codec with auto\_flush\_interval set to 1.I am using logstash version 6.1.1. It works and everything but eventually logstash becomes unresponsive. It stops sending any data to elasticsearch. I have to restart it for it to work again. I took a thread dump of logstash in it's unresponsive state. There were 2 threads in blocking state. Here's the thread dump - > Ruby-0-Thread-35: path/to/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/filewatch-0.9.0/lib/filewatch/watch.rb:176 - priority:5 - threadId:0x00007f57fc01a800 - nativeId:0x1edc - state:BLOCKED > stackTrace: > java.lang.Thread.State: BLOCKED (on object monitor) > at org.jruby.internal.runtime.methods.SynchronizedDynamicMethod.call(SynchronizedDynamicMethod.java:47) > > - waiting to lock \<0x00000000ddbb0110\> (a org.jruby.RubyHash) > at java.lang.invoke.LambdaForm$DMH/1858609436.invokeVirtual\_L5\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$BMH/22069592.reinvoke(LambdaForm$BMH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1957502751.linkToCallSite(LambdaForm$MH) > at CLPPRDWEB014.home.webprd01.tmon.tmon\_minus\_agent\_minus\_3\_dot\_4\_dot\_1.logstash\_minus\_6\_dot\_1\_dot\_1.vendor.bundle.jruby.$2\_dot\_3\_dot\_0.gems.logstash\_minus\_codec\_minus\_multiline\_minus\_3\_dot\_0\_dot\_8.lib.logstash.codecs.identity\_map\_codec.RUBY$method$identity\_count$0(/CLPPRDWEB014/home/webprd01/tmon/tmon-agent-3.4.1/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/logstash-codec-multiline-3.0.8/lib/logstash/codecs/identity\_map\_codec.rb:241) > at java.lang.invoke.LambdaForm$DMH/2061475679.invokeStatic\_L6\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$BMH/1485697819.reinvoke(LambdaForm$BMH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1957502751.linkToCallSite(LambdaForm$MH) > at CLPPRDWEB014.home.webprd01.tmon.tmon\_minus\_agent\_minus\_3\_dot\_4\_dot\_1.logstash\_minus\_6\_dot\_1\_dot\_1.vendor.bundle.jruby.$2\_dot\_3\_dot\_0.gems.logstash\_minus\_codec\_minus\_multiline\_minus\_3\_dot\_0\_dot\_8.lib.logstash.codecs.identity\_map\_codec.RUBY$method$map\_cleanup$0(/CLPPRDWEB014/home/webprd01/tmon/tmon-agent-3.4.1/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/logstash-codec-multiline-3.0.8/lib/logstash/codecs/identity\_map\_codec.rb:249) > at java.lang.invoke.LambdaForm$DMH/92523742.invokeStatic\_L6\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$MH/1027007693.invokeExact\_MT(LambdaForm$MH) > at org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:90) > at org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:128) > at org.jruby.RubyClass.finvoke(RubyClass.java:512) > at org.jruby.RubyBasicObject.send19(RubyBasicObject.java:1664) > at org.jruby.RubyKernel.send19(RubyKernel.java:1982) > at java.lang.invoke.LambdaForm$DMH/1247233941.invokeStatic\_L4\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$BMH/209833425.reinvoke(LambdaForm$BMH) > at java.lang.invoke.LambdaForm$MH/603742814.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1154002927.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/603742814.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1154002927.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1615056168.linkToCallSite(LambdaForm$MH) > at CLPPRDWEB014.home.webprd01.tmon.tmon\_minus\_agent\_minus\_3\_dot\_4\_dot\_1.logstash\_minus\_6\_dot\_1\_dot\_1.vendor.bundle.jruby.$2\_dot\_3\_dot\_0.gems.logstash\_minus\_codec\_minus\_multiline\_minus\_3\_dot\_0\_dot\_8.lib.logstash.codecs.identity\_map\_codec.RUBY$block$start$1(/CLPPRDWEB014/home/webprd01/tmon/tmon-agent-3.4.1/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/logstash-codec-multiline-3.0.8/lib/logstash/codecs/identity\_map\_codec.rb:55) > at java.lang.invoke.LambdaForm$DMH/1804094807.invokeStatic\_L8\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$MH/1095293768.invokeExact\_MT(LambdaForm$MH) > at org.jruby.runtime.CompiledIRBlockBody.callDirect(CompiledIRBlockBody.java:145) > at org.jruby.runtime.IRBlockBody.call(IRBlockBody.java:71) > at org.jruby.runtime.Block.call(Block.java:124) > at org.jruby.RubyProc.call(RubyProc.java:289) > at org.jruby.RubyProc.call(RubyProc.java:246) > at org.jruby.internal.runtime.RubyRunnable.run(RubyRunnable.java:104) > at java.lang.Thread.run(Thread.java:745) > > Ruby-0-Thread-33: path/to/logstash-6.1.1/vendor/bundle/jruby/2.3.0/gems/filewatch-0.9.0/lib/filewatch/observing\_tail.rb:79 - priority:5 - threadId:0x00007f57f4056000 - nativeId:0x1eda - state:BLOCKED > stackTrace: > java.lang.Thread.State: BLOCKED (on object monitor) > at org.jruby.internal.runtime.methods.SynchronizedDynamicMethod.call(SynchronizedDynamicMethod.java:47) > > - waiting to lock \<0x00000000de51a1c0\> (a org.jruby.RubyHash) > at java.lang.invoke.LambdaForm$DMH/1858609436.invokeVirtual\_L5\_L(LambdaForm$DMH) > at java.lang.invoke.LambdaForm$BMH/22069592.reinvoke(LambdaForm$BMH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1160460865.delegate(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1725017993.guard(LambdaForm$MH) > at java.lang.invoke.LambdaForm$MH/1957502751.linkToCallSite(LambdaForm$MH) > ..... Here's my logstash configuration - ``` input { file { path => "path/to/logs/gc*" sincedb_path => "path/to/gc.db" start_position => "end" type => "GC_Data" codec => multiline { pattern => "^%{TIMESTAMP_ISO8601}:" negate => true what => "previous" auto_flush_interval => 1 } } } ``` Could you please help me out in this? I can't seem to pinpoint the issue. Is it an error in the plugin? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [August 23, 2018, 6:56am UTC](https://discuss.elastic.co/t/logstash-multiline-codec-makes-logstash-unresponsive/141703/2 "2018-08-23T06:56:40Z")
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