[jira] [Commented] (SPARK-3625) In some cases, the RDD.checkpoint does not work

["Guoqiang Li (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/SPARK-3625?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14395492#comment-14395492 ] 

Guoqiang Li commented on SPARK-3625:
------------------------------------

When we run the machine learning and graph algorithms, this feature is very necessary, I think we should merge this PR 2480  to master .

> In some cases, the RDD.checkpoint does not work
> -----------------------------------------------
>
>                 Key: SPARK-3625
>                 URL: https://issues.apache.org/jira/browse/SPARK-3625
>             Project: Spark
>          Issue Type: Improvement
>          Components: Spark Core
>    Affects Versions: 1.0.2, 1.1.0
>            Reporter: Guoqiang Li
>            Assignee: Guoqiang Li
>
> The reproduce code:
> {code}
>     sc.setCheckpointDir(checkpointDir)
>     val c = sc.parallelize((1 to 1000)).map(_ + 1)
>     c.count
>     val dep = c.dependencies.head.rdd
>     c.checkpoint()
>     c.count
>     assert(dep != c.dependencies.head.rdd)
> {code}
> This limit is too strict , This makes it difficult to implement SPARK-3623 .



--
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