[ https://issues.apache.org/jira/browse/AMBARI-18619?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alejandro Fernandez updated AMBARI-18619: ----------------------------------------- Status: Open (was: Patch Available) > Optimize Service Checks to it picks a random host and prefers hosts with 0 > active commands > ------------------------------------------------------------------------------------------ > > Key: AMBARI-18619 > URL: https://issues.apache.org/jira/browse/AMBARI-18619 > Project: Ambari > Issue Type: Bug > Components: ambari-server > Affects Versions: 2.4.0 > Reporter: Alejandro Fernandez > Assignee: Alejandro Fernandez > Priority: Critical > Fix For: 2.5.0 > > Attachments: AMBARI-18619.branch-2.5.patch, AMBARI-18619.trunk.patch > > > STR: > * Deploy a 3-node cluster with Ambari 2.4 and HDP 2.5 with clients on every > host. > * Run multiple service checks in parallel, but notice that they typically run > on the same 1 or 2 hosts. > Currently, Ambari relies on getting the list of candidate hosts from the DB > and excludes all hosts that are in maintenance mode. From that list, it picks > the first host that is healthy (i.e., heartbeating). This means that the > logic does not pick a random host. > Instead, Ambari should always pick a random host and prefer to schedule on > hosts that have 0 in-progress commands. -- This message was sent by Atlassian JIRA (v6.3.4#6332)