[philip1209]

They erase their own history: https://groups.google.com/g/comp.lang.java/c/aSPAJO05LIU/m/u...

[Thorrez]

From the top of the page:

>Viewing and searching of historical data will still be supported as it is done today.

Disclosure: I work at Google (or at least I hope I still do), but not on this.