cannot load Java class kafka.consumer.ConsumerIterator about jruby-kafka

[joekiller]

Are you using the latest gemfile?
On May 10, 2015 6:11 AM, "alexphys" [email protected] wrote:

Hi , I have the following error after I have a successful bundle and try
to execute my app

NameError: cannot load Java class kafka.consumer.ConsumerIterator
for_name at org/jruby/javasupport/JavaClass.java:1286
get_proxy_class at org/jruby/javasupport/JavaUtilities.java:34
java_import at
file:/home/user/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:27
map at org/jruby/RubyArray.java:2412
java_import at
file:/home/user/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:22
Consumer at
/home/user/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-1.4.0-java/lib/jruby-kafka/consumer.rb:6
(root) at
/home/user/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-1.4.0-java/lib/jruby-kafka/consumer.rb:5
require at org/jruby/RubyKernel.java:1071
require at
/home/user/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:69
(root) at
/home/user/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-1.4.0-java/lib/jruby-kafka.rb:1
require at org/jruby/RubyKernel.java:1071
require at
/home/user/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:128
require at
/home/user/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:121
(root) at app.rb:4

Any suggestions?

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#28.

[alexphys]

Sorry for the late responce.
In the end it wasn't gem's problem but the way I had jruby installed through rvm.
I went on and uninstalled it and reinstalled jruby specifying the ruby api

rvm install jruby --1.9

and when I bundle installed the gem again it fetched the jars as it should.

[daluu]

I got similar error:

NameError: cannot load Java class kafka.consumer.ConsumerIterator
for_name at org/jruby/javasupport/JavaClass.java:1286
get_proxy_class at org/jruby/javasupport/JavaUtilities.java:34
java_import at file:/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:27
map at org/jruby/RubyArray.java:2412
java_import at file:/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:22
(root) at /Users/daluu/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-0.1.0/lib/jruby-kafka/consumer.rb:4
require at org/jruby/RubyKernel.java:1071
(root) at /Users/daluu/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:1
require at /Users/daluu/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:54
require at org/jruby/RubyKernel.java:1071
(root) at /Users/daluu/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-0.1.0/lib/jruby-kafka.rb:1
(root) at kafka_readj.rb:1

Is there a certain sequence of steps involved?

I didn't build from source per Github readme, but just only added the gem in Gemfile for using the RubyGem version, is that not latest or I need to force latest version? It's installed in list of gems

I had jruby installed originally with "rvm install jruby" then I uninstalled with "rvm uninstall jruby" and reinstalled with suggestion here. Still have issue.

I'm connecting to an existing Kafka server remotely (not localhost installation). Do I still need some Java JARs or setting path?

I have Kafka installed locally via brew . Have a bunch of shell scripts under /usr/local/bin. But I don't know where any matching JARs and path are.

Do I need to set path to anything under

/usr/local/Cellar/kafka/0.8.2.1/libexec/bin
/usr/local/Cellar/kafka/0.8.2.1/libexec/clients

[joekiller]

If you are using rvm do a rvm list and make sure jruby is being used.
Try rvm use jruby and then gem install jruby-kafka
On Jun 15, 2015 5:56 PM, "David Luu" [email protected] wrote:

I got similar error:

NameError: cannot load Java class kafka.consumer.ConsumerIterator
for_name at org/jruby/javasupport/JavaClass.java:1286
get_proxy_class at org/jruby/javasupport/JavaUtilities.java:34
java_import at
file:/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:27
map at org/jruby/RubyArray.java:2412
java_import at
file:/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/jruby.jar!/jruby/java/core_ext/object.rb:22
(root) at
/Users/daluu/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-0.1.0/lib/jruby-kafka/consumer.rb:4
require at org/jruby/RubyKernel.java:1071
(root) at
/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:1
require at
/Users/daluu/.rvm/rubies/jruby-1.7.19/lib/ruby/shared/rubygems/core_ext/kernel_require.rb:54
require at org/jruby/RubyKernel.java:1071
(root) at
/Users/daluu/.rvm/gems/jruby-1.7.19/gems/jruby-kafka-0.1.0/lib/jruby-kafka.rb:1
(root) at kafka_readj.rb:1

Is there a certain sequence of steps involved?

I didn't build from source per Github readme, but just only added the gem
in Gemfile for using the RubyGem version, is that not latest or I need to
force latest version? It's installed in list of gems

I had jruby installed originally with "rvm install jruby" then I
uninstalled with "rvm uninstall jruby" and reinstalled with suggestion
here. Still have issue.

I'm connecting to an existing Kafka server remotely (not localhost
installation). Do I still need some Java JARs or setting path?

I have Kafka installed locally via brew . Have a bunch of shell scripts
under /usr/local/bin. But I don't know where any matching JARs and path are.

Do I need to set path to anything under

/usr/local/Cellar/kafka/0.8.2.1/libexec/bin
/usr/local/Cellar/kafka/0.8.2.1/libexec/clients

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#28 (comment)
.

[joekiller]

Looks like you are using jruby-kakfa 0.1.0 which is quite old. Install the latest instead.

[daluu]

Can I install latest via rubygems.org or need to build from source? The default install doesn't give you the latest? What's the latest version?

[joekiller]

Try version 1.4.0. I'm not sure why it does 0.1.0

On Tue, Jun 16, 2015 at 12:10 AM, David Luu [email protected]
wrote:

Can I install latest via rubygems.org or need to build from source? The
default install doesn't give you the latest? What's the latest version?

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#28 (comment)
.