Summary

On March 15th 2026, an issue affecting Delta Share was identified. The issue was caused by a change in how timestamp values were stored. This change was introduced as part of an infrastructure upgrade on March 13, 2026. The incident was limited in scope and, based on our investigations, only one tenant/partner was affected.

Customer impact

One tenants/partners Delta Share integration failed when loading data containing timestamp fields. This meant that some shared data could not be processed correctly in their integration. At this time, no other Delta Share users have been identified as affected.

Root cause

As part of an upgrade, the infrastructure used to prepare shared data was moved to a newer cluster setup. Following this change, timestamp values were written in a different format than before. While the data itself remained correct and available, one partner integration was not able to handle the new timestamp format.

Mitigation

We worked directly with the partner that was affected by the issue after the issue was reported. The partner updated their integration to support the new timestamp format, which resolved the issue. We also evaluated whether to revert to the previous format, but decided not to do so since no other users appeared to be affected and a rollback would have required significant additional work for the impacted partner.

Next steps

To reduce the risk of similar issues in the future, we are taking the following actions:

• Evaluating validation of data types when making infrastructure changes

We are sorry for the inconvenience this caused.