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Posted to issues@spark.apache.org by "Apache Spark (JIRA)" <ji...@apache.org> on 2017/11/06 13:36:00 UTC
[jira] [Commented] (SPARK-21640) Method mode with String parameters
within DataFrameWriter is error prone
[ https://issues.apache.org/jira/browse/SPARK-21640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16240298#comment-16240298 ]
Apache Spark commented on SPARK-21640:
--------------------------------------
User 'HyukjinKwon' has created a pull request for this issue:
https://github.com/apache/spark/pull/19673
> Method mode with String parameters within DataFrameWriter is error prone
> ------------------------------------------------------------------------
>
> Key: SPARK-21640
> URL: https://issues.apache.org/jira/browse/SPARK-21640
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.2.0
> Reporter: Alberto
> Assignee: Alberto
> Priority: Trivial
> Fix For: 2.3.0
>
>
> The following method:
> {code:java}
> def mode(saveMode: String): DataFrameWriter[T]
> {code}
> sets the SaveMode of the DataFrameWriter depending on the string that is pass-in as parameter.
> There is a java Enum with all the save modes which are Append, Overwrite, ErrorIfExists and Ignore. In my current project I was writing some code that was using this enum to get the string value that I use to call the mode method:
> {code:java}
> private[utils] val configModeAppend = SaveMode.Append.toString.toLowerCase
> private[utils] val configModeErrorIfExists = SaveMode.ErrorIfExists.toString.toLowerCase
> private[utils] val configModeIgnore = SaveMode.Ignore.toString.toLowerCase
> private[utils] val configModeOverwrite = SaveMode.Overwrite.toString.toLowerCase
> {code}
> The configModeErrorIfExists val contains the value "errorifexists" and when I call the saveMode method using this string it does not match. I suggest to include "errorifexists" as a right match for the ErrorIfExists SaveMode.
> Will create a PR to address this issue ASAP.
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