Intermittent Error "Internet communication error: Transferred a partial file" When Running Extract Refresh Tasks

Published: 22 Jan 2020
Last Modified Date: 10 Jul 2020


When running parallel refreshes of workbooks that contain extracts of published extracts in 2019.1 and later versions, the following error might occur: 

‘Internet communication error: transferred a partial file’


  • Tableau Server versions:
    • 2019.1.0 - 2019.1.11
    • 2019.2.0 - 2019.2.7
    • 2019.3.0 - 2019.3.3
    • 2019.4.0 - 2019.4.2


Option 1

Upgrade to Tableau Server 2019.1.12, 2019.2.8, 2019.3.4, 2019.4.3 or a newer version. Click here for downloads of current and previous versions of Tableau Server: Tableau Server Downloads and Release Notes. For more information on current releases, see Upgrade Tableau Server and Server Upgrade.

Option 2

If you are not able to update to the newest version, the below commands will manually update the Tableau Server settings.   
  1. Determine Tableau Server's default session timeout value:
    tsm configuration get -k dataserver.session.expiry.timeout
    • This value is displayed in minutes. Default is 30.
  2. Use the following commands to update the connection timeout value to match the timeout value configured in step #1.  This value is displayed in milliseconds:
    tsm stop
    tsm configuration set -k dataserver.tomcat.connection_timeout_ms -v 1800000 \\(30 minutes is the default value, but this value should match the value found for dataserver timeout in step #1.)
    tsm pending-changes apply
    tsm start


The value of dataserver.tomcat.connection_timeout_ms is set too low by default in the affected versions above. 

This issue has been resolved in the newest maintenance releases of Tableau Server.
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