Jonathan Hurley created AMBARI-24768:
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Summary: Load Upgrade Checks Dynamically From Stacks
Key: AMBARI-24768
URL: https://issues.apache.org/jira/browse/AMBARI-24768
Project: Ambari
Issue Type: Task
Affects Versions: 2.8.0
Reporter: Jonathan Hurley
Assignee: Jonathan Hurley
Fix For: 2.8.0
Stack-provided upgrade checks need to be loaded from a provided JAR when Ambari
Server starts up. Currently, upgrade checks are loaded synchronously, scanning
the entire classpath for classes matching {{UpgradeCheck}} in the package
{{org.apache.ambari.server.checks}}. This can be extremely slow and cause
Ambari Server to fail to start within a reasonable amount of time. The proposed
changes for this issue are as follows:
- Move to an asynchronous model for scanning the classpath for instances of
{{UpgradeCheck}}
- Allow stacks to provide their own plugin directory & JAR for loading SPI
implementations of {{UpgradeCheck}}
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