Thank you for your comments.
> create a wiki account then ask for write access & we'll set you up
I created a wiki account. (https://wiki.apache.org/hadoop/AkiraAjisaka)
Would you set up for write access?
Now I know HADOOP-9346 and HADOOP-9440 for enabling protobuf 2.5.0, but
these issues have been left for months.
Have you seen the reason why these issues have not been fixed; see -
https://issues.apache.org/jira/browse/HADOOP-9346?focusedCommentId=13657835&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13657835
If you have a solution for that issue, I am glad to commit that patch.
I've seen it, but I don't have any solution now.
I'll try to find.
Regards,
Akira