Philipp Dallig created ZEPPELIN-5999:
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Summary: Remove instance Objects out of Zeppelin
Key: ZEPPELIN-5999
URL: https://issues.apache.org/jira/browse/ZEPPELIN-5999
Project: Zeppelin
Issue Type: Task
Reporter: Philipp Dallig
Assignee: Philipp Dallig
Currently Zeppelin has some static instance objects (PluginManager,
ZeppelinConfiguration, ConfigStorage) which can lead to strange behavior when
we change the objects during tests.
Zeppelin has some workarounds:
- ZeppelinConfiguration.reset();
- PluginManager.reset();
But these workarounds are not thread-safe and we cannot start multiple
ZeppelinServers at once.
We should also not use `System.setProperty(..., ...)` to change the
configuration during the test runtime. This has an effect on other tests
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