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https://issues.apache.org/jira/browse/LIVY-454?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16421902#comment-16421902
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Saisai Shao commented on LIVY-454:
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No, I don't think your problem can be solved with sync or async launch of
Spark applications, or it is related to sync or async.
> Creating batch sessions seems to be synchronous. Is there any plan to make it
> asynchronous ?
> --------------------------------------------------------------------------------------------
>
> Key: LIVY-454
> URL: https://issues.apache.org/jira/browse/LIVY-454
> Project: Livy
> Issue Type: Question
> Components: Batch, Server
> Affects Versions: 0.4.0, 0.5.0
> Reporter: kondziolka
> Priority: Minor
>
> Creating batch sessions seems to be synchronous, below one line from
> _BatchSession.scala_ which is executed during creating batch session request.
> {code:java}
> sessionStore.save(BatchSession.RECOVERY_SESSION_TYPE,
> s.recoveryMetadata){code}
> In case of session storage basing on HDFS, time of creating batch session
> (so waiting for answer from server) can be quite long, for example during
> failover of some node in Hadoop cluster. It can lead to some integration
> issues.
> Therefore, the question is are you going to provide asynchronous approach to
> creating batch session ?
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