[jira] [Assigned] (KUDU-2250) Document odd interaction between upserts and Spark Datasets

["Fengling Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KUDU-2250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Fengling Wang reassigned KUDU-2250:
-----------------------------------

    Assignee: Fengling Wang

> Document odd interaction between upserts and Spark Datasets
> -----------------------------------------------------------
>
>                 Key: KUDU-2250
>                 URL: https://issues.apache.org/jira/browse/KUDU-2250
>             Project: Kudu
>          Issue Type: Task
>          Components: spark
>    Affects Versions: 1.6.0
>            Reporter: Jean-Daniel Cryans
>            Assignee: Fengling Wang
>            Priority: Major
>              Labels: newbie
>
> We need to document a specific behavior of Spark Datasets that runs contrary to how Kudu works.
> Say you have 3 columns "k, x, y" where k is the primary key.
> You run a first insert on a row "k=1, x=2, y=3".
> Now you upsert "k=1, y=4".
> Using any Kudu API, the full row would now be "k=1, x=2, y=4" but with Datasets you have "k=1, x=*NULL*, y=4". This means that Datasets put a null value when some columns aren't specified.



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)