Tableau .hyper extract format

Beginning in version 10.5, when you create a new extract, it uses the .hyper format instead of the .tde format. Extracts in the .hyper format take advantage of the improved data engine, which supports the same fast analytical and query performance as the data engine before it, but for even larger extracts.

Although there are many benefits of using .hyper extracts, the primary benefits include the following:

Create larger extracts: You can create extracts with billions of rows of data. Because .hyper extracts can support more data, you can consolidate .tde extracts that you previously had to create separately into a single .hyper extract.
Create and refresh extracts faster: While Tableau has always optimized performance for creating and refreshing extracts, version 2019.1 supports faster extract creation and refreshes for even larger data sets.
Experience better performance when interacting with views that use extract data sources: Although smaller extracts continue to perform efficiently, larger extracts perform more efficiently.

What causes an extract upgrade?

Although you can continue to open and interact with .tde extracts in version 2019.1, when you perform an extract task on a .tde extract, the .tde extract is upgraded to a .hyper extract. After the extract is upgraded, you should be aware of the following backward limitations:

You can't convert the upgraded extract back to a .tde extract.
You can't open the upgraded extract in an earlier version of Tableau Desktop. This might affect how you and other users might interact with .tde extracts.
You can't use the Export as Version in Tableau Desktop to downgrade a workbook that contains a .hyper extract.
You can't publish the extract as an older version from Tableau Desktop to Tableau Server.
You can't open a workbook in Tableau Desktop 10.4 and earlier that is downloaded from Tableau Server or Tableau Online using the Download Tableau Workbook option if the workbook contains a .hyper extract.

Tasks that cause an extract upgrade

There are three distinct ways a .tde extract can get upgraded to a .hyper extract: 1.) during an extract refresh (full or incremental), 2.) when appending data to an extract, and 3.) when an extract is upgraded manually. After an extract has been upgraded using Tableau Desktop, it's not automatically removed in case the .tde extract is being referenced by other workbooks.

In addition to the tasks that upgrade an extract, extract tasks performed outside of Tableau Desktop can cause an extract upgrade to the .tde extract you interact with. This includes the following tasks:

Manual refresh (Tableau Server and Tableau Online)

Incremental refresh on a published extract data source from Tableau Bridge (Tableau Online)

A scheduled full or incremental extract refresh data source (Tableau Server and Tableau Online)
A scheduled incremental extract refresh from Tableau Bridge (Tableau Online)

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