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Posted to issues@spark.apache.org by "Kangtian (Jira)" <ji...@apache.org> on 2019/10/05 04:43:00 UTC
[jira] [Commented] (SPARK-29267) rdd.countApprox should stop when
'timeout'
[ https://issues.apache.org/jira/browse/SPARK-29267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16944984#comment-16944984 ]
Kangtian commented on SPARK-29267:
----------------------------------
[~hyukjin.kwon]
Just finish when timeout, we don't need final value ~
In my case, i used *partly partitions* to get approximate counting, without timeout param. (in my case, more then 100 partitions)
!image-2019-10-05-12-38-26-867.png!
!image-2019-10-05-12-38-52-039.png!
> rdd.countApprox should stop when 'timeout'
> ------------------------------------------
>
> Key: SPARK-29267
> URL: https://issues.apache.org/jira/browse/SPARK-29267
> Project: Spark
> Issue Type: Improvement
> Components: Spark Core
> Affects Versions: 3.0.0
> Reporter: Kangtian
> Priority: Minor
> Attachments: image-2019-10-05-12-37-22-927.png, image-2019-10-05-12-38-26-867.png, image-2019-10-05-12-38-52-039.png
>
>
> {{The way to Approximate counting: org.apache.spark.rdd.RDD#countApprox}}
> +countApprox(timeout: Long, confidence: Double = 0.95)+
>
> But:
> when timeout comes, the job will continue run until really finish.
>
> We Want:
> *When timeout comes, the job will finish{color:#FF0000} immediately{color}*, without FinalValue
>
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