[jira] [Updated] (AMBARI-14207) Web Client Does Not Display Errors When Creating Upgrade

["Xi Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-14207?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Xi Wang updated AMBARI-14207:
-----------------------------
    Attachment: popup.png

> Web Client Does Not Display Errors When Creating Upgrade
> --------------------------------------------------------
>
>                 Key: AMBARI-14207
>                 URL: https://issues.apache.org/jira/browse/AMBARI-14207
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-web
>    Affects Versions: 2.2.0
>            Reporter: Xi Wang
>            Assignee: Xi Wang
>            Priority: Critical
>             Fix For: 2.2.0
>
>         Attachments: popup.png
>
>
> When creating an upgrade, an HTTP error returned (such as a 500 error) is never propagated up to the end user. 
> STR:
> - Setup a 4-host cluster with ZK, Yarn, HDFS
> - Install clients only on the 4th host
> - Place the 4th host into maintenance mode
> - Start an upgrade
> The server will correctly throw an exception since service checks cannot be scheduled since 4th host in maintenance mode is excluded. The error is propagated up as an HTTP 500 error:
> {code:title=HTTP/500}
> While building a service check command for YARN, there were no healthy eligible hosts: unhealthy[], maintenance[c6404.ambari.apache.org]
> {code}
> This message should be shown to the end user. Otherwise, nothing happens in the UI and there is no indication of an error.



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