[jira] [Commented] (FLINK-6302) Documentation build error on ruby 2.4

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-6302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16074345#comment-16074345 ] 

ASF GitHub Bot commented on FLINK-6302:
---------------------------------------

Github user zentol commented on the issue:

    https://github.com/apache/flink/pull/3720
  
    merging.


> Documentation build error on ruby 2.4
> -------------------------------------
>
>                 Key: FLINK-6302
>                 URL: https://issues.apache.org/jira/browse/FLINK-6302
>             Project: Flink
>          Issue Type: Bug
>          Components: Documentation
>            Reporter: Tao Meng
>            Assignee: Tao Meng
>            Priority: Trivial
>
> {code}
> /usr/local/Cellar/ruby/2.4.1_1/include/ruby-2.4.0/ruby/ruby.h:981:28: note: expanded from macro 'RSTRING_LEN'
>      RSTRING(str)->as.heap.len)
>      ~~~~~~~~~~~~~~~~~~~~~~^~~
> yajl_ext.c:881:22: error: use of undeclared identifier 'rb_cFixnum'
>     rb_define_method(rb_cFixnum, "to_json", rb_yajl_json_ext_fixnum_to_json, -1);
>                      ^
> 17 warnings and 1 error generated.
> make: *** [yajl_ext.o] Error 1
> make failed, exit code 2
> {code}
> We should update Gemfile.lock.



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