Max Versions

Last Updated: Jan 29, 2018

Max Versions is a data table attribute used to indicate the maximum number of data versions in each attribute column of a data table. When the number of data versions in an attribute column exceeds the value of Max Versions, the earliest versions are deleted asynchronously.

After creating a data table, you can use the UpdateTable operation to dynamically change the value of Max Versions.

Data that exceeds the value of Max Versions is cleared asynchronously. When dynamically modifying the value of Max Versions, the following conditions apply:

  • Data that exceeds the value of Max Versions is invalid and cannot be viewed or accessed, even though it is not deleted.

  • If you reduce the value of Max Versions, data that exceeds the new value is deleted asynchronously.

  • If you increase the value of Max Versions, data that had exceeded the previous Max Version limit, and has not been deleted, can be accessed.

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