Antonenko Alexander created AMBARI-10219:
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Summary: Ambari should very explicitly show in a globally visible
area when config form validation errors occurred
Key: AMBARI-10219
URL: https://issues.apache.org/jira/browse/AMBARI-10219
Project: Ambari
Issue Type: Task
Components: ambari-web
Affects Versions: 1.7.0
Reporter: Antonenko Alexander
Assignee: Antonenko Alexander
Priority: Critical
Fix For: 2.1.0
PROBLEM: If a validation error occurs in a configuration field which is
currently not visible because the group it's part of (e.g. "Advanced
yarn-site") is rolled-up, the save button won't be enabled and it won't be
obvious as to why this is the case.
In the cause which led me to file this request, customer did an upgrade to
Ambari 1.7/HDP 2.2. During the upgrade, he did not set the value of
{{yarn.resourcemanager.fs.state-store.uri}}. Subsequently, since Ambari
expects this value to be ' ' (single space), the YARN configuration form would
never pass validation, so he could not change YARN for no obvious reason.
Since he never expanded the "Advanced yarn-site" group, he never saw this,
leading to wasted time. If Ambari would have put something next to the Save
button indicating there was an error, and maybe even linked to it, this could
have been avoided.
BUSINESS IMPACT: Since it's not clear why the form won't save, this results in
wasted time and unnecessary support cases.
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