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The most impressive part about Google is how its emphasis on internal standards has allowed it to build some really impressive stuff.

Eg, You can do a sql join on any dataset, in any datacenter. You can turn any query into a hosted visualization.

Every test invocation is streamed to a central server and results can be shared with a url.

There’s more, but those are my two favorites.

Is the join a Spanner query, or is there a system on top of a Spanner that federates/aggregates databases?

Most of adhoc analysis don’t even need Spanner. With Dremel, you can simply define a table on bunch of sharded files and do a SQL query on them.

yeah the TAP/Forge testing infra is pretty gnarly

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