[AMBARI-15589] Stack Advisor Recommendation overrides installed slave components topology

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.3.0, 2.2.2
• Component/s: stacks
• Assignee: Matt
• Reporter: Matt
• Due: 28/Mar/16
• Created: 25/Mar/16 20:43
• Updated: 08/Apr/16 22:59
• Resolved: 27/Mar/16 22:12

Description

Stack Advisor recommendation overrides installed slaves topology of installed services when a new service is added.
Steps to reproduce:

• Install a cluster with HDFS and HAWQ select HAWQSEGMENTs on hosts different from the recommended set of hosts
• Install any other service (HBASE). Error: On the assign slaves page, the HAWQSEGMENTs are checked according to recommendations and not according to the current host topology.

The patch attached to this JIRA would fix the following issues:

• Recommendation given during Add Service wizard should be a combination of current topology for installed services and recommendation for service that is to be installed.
• Adding a new service after adding HAWQ or PXF would checkbox the HAWQSEGMENTs and PXFs correctly even if the user has placed these components different from the layout provided by the recommendation.

Issue Links

• relates to: AMBARI-15783 Assign Slaves and Clients Page: Incorrect validation error shown