KB4530468 - FIX: PolyBase Hadoop queries may fail when the launchpadd service is restarted or killed in SQL Server 2019

Symptoms

Assume that you use PolyBase to run queries in Hadoop in SQL Server 2019. You may notice that the queries are unresponsive or receive an error message that resembles "The Remote Java Bridge has not been attached yet" when the launchpadd service is restarted or killed.

Note The issue exists only in SQL Server for Linux and Big Data Cluster.

Cause

This issue may occur because Remote Hadoop bridge process is not closed correctly.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Resolution

This issue is fixed in the following cumulative update for SQL Server:

About cumulative updates for SQL Server:

Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

More information

Learn about the terminology that Microsoft uses to describe software updates.

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