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https://issues.apache.org/jira/browse/SPARK-30576?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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liushuo updated SPARK-30576:
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    Attachment:     (was: pr-30576.patch)

> Whether to block streaming batch commit, merge all blocking batchs as one 
> batch commit
> --------------------------------------------------------------------------------------
>
>                 Key: SPARK-30576
>                 URL: https://issues.apache.org/jira/browse/SPARK-30576
>             Project: Spark
>          Issue Type: New Feature
>          Components: DStreams
>    Affects Versions: 2.4.4
>            Reporter: liushuo
>            Priority: Major
>
> When the current job is not completed block streaming batch commit, until 
> completed。The next job will merge all batch which  during the blocking.
> for example:
>  the input seq [1, 2, 3, 4, 5, 6]。 
> batch duration: 1s。
> The 3th batch will take a long time。Normally the other batches will be 
> completed quickly.
> We expect:
>       1. the 4th batch will not be commited during the 3th batch computing, 
> and 4th batch will be merge in the next batch. So that
> the size of jobSets  is always less than 1。
>       2. the num completedBatches less than the size of seq。
>       3. the data is not lost
>  
>  



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