Saisai Shao created LIVY-411:
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Summary: Session cannot be started when Python or R package is
missing
Key: LIVY-411
URL: https://issues.apache.org/jira/browse/LIVY-411
Project: Livy
Issue Type: Bug
Components: REPL
Affects Versions: 0.5.0
Reporter: Saisai Shao
Assignee: Saisai Shao
In Livy 0.5.0, we supported multiple languages in one session, but it requires
one the packages be available, such as R package and Python package, otherwise
session will be failed to create. But in some cases python or R package may be
missing in Spark distro, this will make us fail to use Livy's interactive
session.
To fix this issue, we should not force such restriction on session creation,
but delay the check until related interpreter is used. If such packaging is
missing, we should make the related execution failure and return user the cause
of issue, but don't affect other correctly started interpreters.
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