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Exception java.lang.Error thrown while initializing thread_safe ConcurrentHashMapV8 #2596

donv opened this issue Feb 13, 2015 · 1 comment


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donv commented Feb 13, 2015


We are upgrading to ActiveRecord 4.0.13 which requires ActiveSupport 4.0.13 which requires thread_safe 0.1.0 or later. The Ruboto tooling unpacks the gem files from thread_safe into our app and expands the included jar from the gem into our app. The tooling also adds an initialization script to activate the JRuby extention service:

require 'jruby'

This runs OK, but later we get this exception:

20150213 175947.511756 W/dalvikvm( 1459): Exception Ljava/lang/Error; thrown while initializing Lorg/jruby/ext/thread_safe/jsr166e/ConcurrentHashMapV8;
20150213 175947.515924 W/dalvikvm( 1459): Exception Ljava/lang/NullPointerException; thrown while initializing Lorg/jruby/ext/thread_safe/JRubyCacheBackendLibrary$JRubyCacheBackend;
20150213 175947.515949 I/System.out( 1459): Exception in load active support: load error: active_support/inflector/inflections -- java.lang.ExceptionInInitializerError: null
20150213 175947.517934 I/System.out( 1459): org/jruby/ `require'
20150213 175947.519291 I/System.out( 1459): file:/data/app/no.datek.nettbuss.operator-1.apk!/active_support/inflector/methods.rb:3:in `(root)'
20150213 175947.539166 I/System.out( 1459): org/jruby/ `require'
20150213 175947.561805 I/System.out( 1459): file:/data/app/no.datek.nettbuss.operator-1.apk!/active_support/dependencies/autoload.rb:1:in `(root)'
20150213 175947.561911 I/System.out( 1459): org/jruby/ `require'
20150213 175947.561927 I/System.out( 1459): file:/data/app/no.datek.nettbuss.operator-1.apk!/active_support/dependencies/autoload.rb:1:in `(root)'
20150213 175947.561939 I/System.out( 1459): org/jruby/ `require'
20150213 175947.562762 I/System.out( 1459): file:/data/app/no.datek.nettbuss.operator-1.apk!/active_support.rb:1:in `(root)'
20150213 175947.562783 I/System.out( 1459): org/jruby/ `call'
20150213 175947.563837 I/System.out( 1459): file:/data/app/no.datek.nettbuss.operator-1.apk!/active_support.rb:25:in `(root)'
20150213 175947.563860 I/System.out( 1459): org/jruby/ `call'
20150213 175947.563873 I/System.out( 1459): /data/app/no.datek.nettbuss.operator-1.apk!/setup_load_path.rb:1:in `(root)'

I am not sure where to start debugging this. Our app runs well with ActiveRecord 3.2.x, but with ActiveRecord 5 coming this year, version 3.2 is getting really old, and we need to upgrade.

Any help is appreciated.

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donv commented Feb 16, 2015

Found and fixed here: ruby-concurrency/thread_safe#4

@donv donv closed this as completed Feb 16, 2015
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