Robert Nettleton created AMBARI-23397:
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Summary: Blueprint deployments for NameNode Federation Fail
Key: AMBARI-23397
URL: https://issues.apache.org/jira/browse/AMBARI-23397
Project: Ambari
Issue Type: Bug
Components: ambari-sever
Affects Versions: 2.7.0
Reporter: Robert Nettleton
Assignee: Robert Nettleton
Fix For: 2.7.0
Ambari 2.7.0 will include support for HDFS NameNode Federation deployments, as
detailed in:
AMBARI-22916
Blueprint deployments that attempt to use NameNode Federation currently fail
with the following exception:
{code:java}
{u'status': 400, u'message': u'Topology validation failed:
org.apache.ambari.server.topology.InvalidTopologyException: NAMENODE HA
requires exactly 2 hosts running NAMENODE but there are: 4 Hosts:
[ctr-e138-1518143905142-139109-01-000005.hwx.site,
ctr-e138-1518143905142-139109-01-000006.hwx.site,
ctr-e138-1518143905142-139109-01-000003.hwx.site,
ctr-e138-1518143905142-139109-01-000004.hwx.site]'}{code}
The Blueprint configuration processor needs to be updated in order to properly
handle HDFS HA deployments that include Federated nameservices. This will
generally mean that HA deployments can now support more than 2 NameNode
instances.
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