For upgrade testing, I've deployed HDP2.6.5.0-292 (w/ Ambari 2.6.2.2) from Cloubreak and followed the documentation to upgrade to Ambari 2.7.1.0.
It fails during the "ambari-server upgrade " process
# ambari-server upgrade
Using python /usr/bin/python
Upgrading ambari-server
INFO: Upgrade Ambari Server
INFO: Updating Ambari Server properties in ambari.properties ...
INFO: Updating Ambari Server properties in ambari-env.sh ...
INFO: Original file ambari-env.sh kept
WARNING: Original file krb5JAASLogin.conf kept
INFO: File krb5JAASLogin.conf updated.
INFO: Fixing database objects owner
Ambari Server configured for Postgres. Confirm you have made a backup of the Ambari Server database [y/n] (n)? y
INFO: Upgrading database schema
ERROR: Unexpected ValueError: No JSON object could be decoded
Traceback (most recent call last):
File "/usr/sbin/ambari-server.py", line 1060, in <module>
mainBody()
File "/usr/sbin/ambari-server.py", line 1030, in mainBody
main(options, args, parser)
File "/usr/sbin/ambari-server.py", line 980, in main
action_obj.execute()
File "/usr/sbin/ambari-server.py", line 79, in execute
self.fn(*self.args, **self.kwargs)
File "/usr/lib/ambari-server/lib/ambari_server/serverUpgrade.py", line 262, in upgrade
retcode = run_schema_upgrade(args)
File "/usr/lib/ambari-server/lib/ambari_server/serverUpgrade.py", line 162, in run_schema_upgrade
upgrade_response = json.loads(stdout)
File "/usr/lib/ambari-server/lib/ambari_simplejson/__init__.py", line 307, in loads
return _default_decoder.decode(s)
File "/usr/lib/ambari-server/lib/ambari_simplejson/decoder.py", line 335, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/ambari-server/lib/ambari_simplejson/decoder.py", line 353, in raw_decode
raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded
