Comment 1 for bug 1444255

Verified with XB 2.2.10. It should not encrypt xtrabackup_checkpoints file.

root@desktop:/home/nilnandan/backup/2015-04-27_12-14-24# xtrabackup --version
xtrabackup version 2.2.10 based on MySQL server 5.6.22 Linux (x86_64) (revision id: )
root@desktop:/home/nilnandan/backup/2015-04-27_12-14-24#
root@desktop:/home/nilnandan/backup/2015-04-27_12-14-24# ll
total 350668
drwxr-xr-x 7 root root 4096 Apr 27 12:14 ./
drwxrwxr-x 4 nilnandan nilnandan 4096 Apr 27 12:14 ../
-rw-r--r-- 1 root root 395 Apr 27 12:14 backup-my.cnf
-rw-r----- 1 root root 52476800 Apr 27 12:14 ibdata1.xbcrypt
-rw-r----- 1 root root 253987712 Apr 27 12:14 ibdata2.xbcrypt
-rw-r----- 1 root root 52476800 Apr 27 12:14 ibdata3.xbcrypt
drwx------ 2 root root 20480 Apr 27 12:14 mysql/
drwx------ 2 root root 4096 Apr 27 12:14 nil/
drwx------ 2 root root 4096 Apr 27 12:14 nil@002dtest/
drwxr-xr-x 2 root root 12288 Apr 27 12:14 performance_schema/
drwx------ 2 root root 4096 Apr 27 12:14 test/
-rw-r--r-- 1 root root 21 Apr 27 12:14 xtrabackup_binlog_info
-rw-r----- 1 root root 149 Apr 27 12:14 xtrabackup_checkpoints.xbcrypt
-rw-r--r-- 1 root root 606 Apr 27 12:14 xtrabackup_info
-rw-r----- 1 root root 2680 Apr 27 12:14 xtrabackup_logfile.xbcrypt
root@desktop:/home/nilnandan/backup/2015-04-27_12-14-24#