[jira] [Commented] (SPARK-19977) Scheduler Delay (in UI Advanced Metrics) for a task gradually increases from 5 ms to 30 seconds in Spark Streaming application

["Sean Owen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-19977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928043#comment-15928043 ] 

Sean Owen commented on SPARK-19977:
-----------------------------------

That doesn't sound like a bug. It sounds like your batches can't be processed in the time you've allotted.

> Scheduler Delay (in UI Advanced Metrics) for a task gradually increases from 5 ms to 30 seconds in Spark Streaming application
> ------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SPARK-19977
>                 URL: https://issues.apache.org/jira/browse/SPARK-19977
>             Project: Spark
>          Issue Type: Bug
>          Components: Scheduler
>    Affects Versions: 2.1.0
>            Reporter: Ray Qiu
>
> Scheduler Delay (in UI Advanced Metrics) for a task gradually increases from 5 ms to 30+ seconds in a Spark Streaming application, where multiple Kafka direct streams are processed.  These kafka streams are processed separately (not combined via union).  
> It causes the task processing time to increase greatly and eventually stops working.



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