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https://issues.apache.org/jira/browse/SPARK-50894?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-50894:
-----------------------------------
Labels: pull-request-available (was: )
> Upgrade postgresql driver to properly connect to Redshift
> ---------------------------------------------------------
>
> Key: SPARK-50894
> URL: https://issues.apache.org/jira/browse/SPARK-50894
> Project: Spark
> Issue Type: Bug
> Components: Build, Spark Core
> Affects Versions: 4.0.0
> Reporter: Vladan Vasić
> Priority: Major
> Labels: pull-request-available
>
> In this [PR|https://github.com/apache/spark/pull/47810] the version of
> `postgresql` driver was upgraded to {{{}42.7.4{}}}. However, this caused one
> major regression:
> {{Postgres}} driver was not compatible for connection to the {{Redshift}}
> Data Source. This happened because the {{42.7.4}} driver version
> unnecessarily sent {{SET extra_float_digits = 3}} queries to the destination
> data source when establishing the connection. However, the upper limit for
> {{extra_float_digits}} parameter in Redshift is 2.
> The driver version should be upgraded, because this behavior of sending
> unnecessary queries which set the {{extra_float_digits}} when establishing
> connection is fixed in the
> [42.7.5|https://github.com/pgjdbc/pgjdbc/releases/tag/REL42.7.5] driver
> version.
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