[jira] [Reopened] (AMBARI-22387) Create a Pre-Upgrade Check Warning About LZO

["Doroszlai, Attila (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-22387?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doroszlai, Attila reopened AMBARI-22387:
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Hi [~dmitriusan], unused import causes build failure on trunk, can you please remove?

{noformat}
[INFO] --- maven-checkstyle-plugin:2.17:check (checkstyle) @ ambari-server ---
[INFO] Starting audit...
[ERROR] ambari-server/src/main/java/org/apache/ambari/server/checks/LZOCheck.java:22:8: Unused import - java.util.Set. [UnusedImports]
Audit done.
{noformat}

> Create a Pre-Upgrade Check Warning About LZO
> --------------------------------------------
>
>                 Key: AMBARI-22387
>                 URL: https://issues.apache.org/jira/browse/AMBARI-22387
>             Project: Ambari
>          Issue Type: Bug
>          Components: ambari-server
>    Affects Versions: 2.6.1
>            Reporter: Dmitry Lysnichenko
>            Assignee: Dmitry Lysnichenko
>            Priority: Blocker
>             Fix For: 2.6.1
>
>         Attachments: AMBARI-22387.patch
>
>
> Ambari has removed its native support of distributing and installing LZO when the LZO codecs are enabled in {{core-site}}. For existing clusters where LZO is enabled, this means that performing an upgrade will now require manual user intervention to get the LZO packages installed.
> A pre-upgrade check should be created which checks to see if LZO is enabled in the cluster and then produces a {{WARNING}} to the user letting them know that before upgrading, they'd need to distribute the appropriate LZO packages.



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