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From "Dmitro Lisnichenko" <>
Subject Review Request 35140: [PREVIEW] Upgrade Ambari from 1.7 to Ambari 2.0. I'm on HDP, but the version is not showing up in the Stacks and Versions page.
Date Fri, 05 Jun 2015 16:19:33 GMT

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Review request for Ambari, Alejandro Fernandez, Jonathan Hurley, Sid Wagle, and Tom Beerbower.

Bugs: AMBARI-11728

Repository: ambari


I've upgraded from Ambari 1.7 to 2.0 on my own cluster and I'm seeing the same problem
Under ‘stacks and versions’, versions gives no information.
After going through a number of troubleshooting steps, such as refreshing browser cache, restarting
services, datanodes, rebooting etc, I think we can come to the conclusion that this is a bug.
The upgrade document mentions this, however the advised actions don’t work. 

We decided to make requirements for initial bootstrap more loose:
- at least one component should be upgraded on each non-client host
- any client-only/unhealthy host is skipped in checks
- at least one healthy/non-client host should be in a cluster during initial bootstrap
So customer should be able to get to CURRENT version in most cases and solve any existing
issues after that

Server side should look good, still working on an agent side (not reporting component version
until agent restart). 

Current agent changes should be safe (removal of a lot of dead component status/version related
code), but I realized that agent side refactor may be too agressive for 2.1, so I'll probably
create a separate jira and move non-critical refactors out to 2.2. Removed code used to be
useful before adding v2 services (with python scripts) and now does nothing.


  ambari-agent/src/main/python/ambari_agent/ d48c965 
  ambari-agent/src/main/python/ambari_agent/ 0354225 
  ambari-agent/src/main/python/ambari_agent/ 8afb140 
  ambari-agent/src/main/python/ambari_agent/ 5231f72 
  ambari-agent/src/test/python/ambari_agent/ 59e01a6 
  ambari-agent/src/test/python/ambari_agent/ 831ecce 
  ambari-agent/src/test/python/ambari_agent/ 0c78fdb 
  ambari-agent/src/test/python/ambari_agent/ e9bb776 
  ambari-agent/src/test/python/ambari_agent/ f01fd3e 
  ambari-agent/src/test/python/ambari_agent/ 32be4a8 
  ambari-server/src/main/java/org/apache/ambari/server/agent/ d5847fc

  ambari-server/src/main/java/org/apache/ambari/server/state/cluster/ 8fdc160



As of now, agent tests pass, did not check server tests yet.
Also, E2E live testing is still pending


Dmitro Lisnichenko

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