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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2015/04/26 21:30:38 UTC

[jira] [Commented] (SPARK-7135) Expression for monotonically increasing IDs

    [ https://issues.apache.org/jira/browse/SPARK-7135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14513210#comment-14513210 ] 

Apache Spark commented on SPARK-7135:
-------------------------------------

User 'rxin' has created a pull request for this issue:
https://github.com/apache/spark/pull/5709

> Expression for monotonically increasing IDs
> -------------------------------------------
>
>                 Key: SPARK-7135
>                 URL: https://issues.apache.org/jira/browse/SPARK-7135
>             Project: Spark
>          Issue Type: Sub-task
>          Components: SQL
>            Reporter: Reynold Xin
>
> Seems like a common use case that users might want a unique ID for each row. It is more expensive to have consecutive IDs, since that'd require two pass over the data. However, many use cases can be satisfied by just having unique ids.



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