SVN RA layer request failed
is unable to connect to a repository

solution:
1, delete AppData\ Subversion\auth folder, or go TortoiseSVN to save data in order to clear authentication data
2, go to eclipse-> preference-> team-> svn-> SVN interface – & gt; Switch to another SVNKit (if you do not have this option refer to the end of the reference file)

reference reading:

eclipse install SVN plug-in the two ways of

https://www.cnblogs.com/alamps/p/6155963.html you will be best subclipse and SVNKit are set on the
subclipse 1.8
subclipse.tigris.org/update_1.8.x

Other reading:

https://stackoverflow.com/questions/8990544/cannot-connect-to-repo-with-tortoisesvn http://bbs.csdn.net/topics/390951109?page=1