HDF 3.0.1 to HDF 3.1.2 express upgrade fails?

[#1]

I am upgrading HDF 3.0.1 to HDF 3.1.2 with ambari 2.6.2.0

But it fails with the error :

 raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded

Right now I have upgraded ambari sucessfully from 2.5.1 to 2.6.2 and ran the mpack to register the version into ambari I could do that and when I trying install it its throwing error like above.

Could someone give any suggestions?

[#2]

@Veerendra Nath Jasthi

Can you tell at which operation are you seeing that error? also provide full trace of the error.

[#3]

Hi @amarnath reddy pappu thanks for quick response.

I could see this error after I was trying to install new version from ambari.

Here is full trace from one of ambari agent (all agents are reporting same).

Traceback (most recent call last): File "/var/lib/ambari-agent/cache/custom_actions/scripts/install_packages.py", line 487, in <module> InstallPackages().execute() File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 375, in execute method(env) File "/var/lib/ambari-agent/cache/custom_actions/scripts/install_packages.py", line 93, in actionexecute self.stack_root_folder = Script.get_stack_root() File "/usr/lib/ambari-agent/lib/resource_management/libraries/script/script.py", line 667, in get_stack_root stack_root = json.loads(stack_root_json) File "/usr/lib/ambari-agent/lib/ambari_simplejson/__init__.py", line 307, in loads return _default_decoder.decode(s) File "/usr/lib/ambari-agent/lib/ambari_simplejson/decoder.py", line 335, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/ambari-agent/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

[#4]

@Veerendra Nath Jasthi

If you have Ambari Database backup then restore it first - then attempt to upgrade again and see if that helps. please take current DB backup as well in case of any issues.

[#5]

@Veerendra Nath Jasthi

Did you follow correct order while upgrading? As per this document https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.1.2/bk_ambari-upgrade/content/preparing_to_upgr...

1. First Ambari binary upgrade ( yum upgrade ambari-server)

2. apply mpack

3. Ambari DB upgrade.( ambari-server upgrade)

[#6]

@Veerendra Nath Jasthi

Did you apply 3.1.2 mpack before attempting 3rd step?

[#7]

@amarnath reddy pappu Hi amar,

I did not do in the way you mentioned If I want to proceed in the correct way what would be steps should I follow ?

Should I uninstall everything or any other workaround ?

[#8]

As you said I followed the steps but when I do ambari-server upgrade its showing below :

Using python /usr/bin/python Upgrading ambari-server INFO: Upgrade Ambari Server INFO: Updating Ambari Server properties in ambari.properties ... WARNING: Can not find ambari.properties.rpmsave file from previous version, skipping import of settings INFO: Updating Ambari Server properties in ambari-env.sh ... INFO: Can not find ambari-env.sh.rpmsave file from previous version, skipping restore of environment settings. ambari-env.sh may not include any user customization. ERROR: No management packs found that can be upgraded! ERROR: Exiting with exit code -1. REASON: No management packs found that can be upgraded!

I tried to start ambari server but its showing below:

ERROR [main] AmbariServer:1078 - Failed to run the Ambari Server org.apache.ambari.server.AmbariException: Current database store version is not compatible with current server version, serverVersion=2.6.2.0, schemaVersion=2.5.1 at org.apache.ambari.server.checks.DatabaseConsistencyCheckHelper.checkDBVersionCompatible(DatabaseConsistencyCheckHelper.java:245) at org.apache.ambari.server.controller.AmbariServer.main(AmbariServer.java:1063)