[jira] [Commented] (SPARK-19182) Optimize the lock in StreamingJobProgressListener to not block UI when generating Streaming jobs

["Apache Spark (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-19182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15823663#comment-15823663 ] 

Apache Spark commented on SPARK-19182:
--------------------------------------

User 'uncleGen' has created a pull request for this issue:
https://github.com/apache/spark/pull/16601

> Optimize the lock in StreamingJobProgressListener to not block UI when generating Streaming jobs
> ------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-19182
>                 URL: https://issues.apache.org/jira/browse/SPARK-19182
>             Project: Spark
>          Issue Type: Improvement
>          Components: DStreams
>            Reporter: Shixiong Zhu
>            Priority: Minor
>
> When DStreamGraph is generating a job, it will hold a lock and block other APIs. Because StreamingJobProgressListener (numInactiveReceivers, streamName(streamId: Int), streamIds) needs to call DStreamGraph's methods to access some information, the UI may hang if generating a job is very slow (e.g., talking to the slow Kafka cluster to fetch metadata).
> It's better to optimize the locks in DStreamGraph and StreamingJobProgressListener to make the UI not block by job generation.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org