Firebase BigQuery导出架构变更：previous_timestamp参数是否会移除？

Hey Thomas,

Thanks for reaching out with this question—let’s walk through what we know and what steps you can take:

• Based on your observation that previous_timestamp is no longer present in the official Firebase event parameters list for the new architecture, this is a clear sign that the parameter is slated for removal as part of the upcoming update. Firebase’s official documentation only includes parameters that will be supported in the current or upcoming active system versions, so missing entries here usually mean deprecation or removal.
• Start by revisiting the email notification you received about the architecture change. Firebase’s official communications for such updates almost always include explicit details about which features or parameters are being removed, along with timelines and any migration guidance. That’s going to be your most direct source of confirmed info.
• If the email doesn’t answer this question clearly, don’t hesitate to reach out via Firebase’s official support (you can find access to this through your Firebase Console’s help menu). The support team will have insider knowledge about the exact scope of the changes and can give you a definitive answer.
• To prepare for the transition, I’d suggest updating your code to handle the absence of previous_timestamp now. Adding a simple check like if ('previous_timestamp' in eventData) before accessing the parameter will let your implementation work smoothly with both the current setup and the new architecture once it rolls out.

内容的提问来源于stack exchange，提问作者Thomas Schepp