fnordig/blog
1
Fork 0
Code Activity

Explain the underscore difference

Browse source
This commit is contained in:
Jan-Erik Rediger 2019-11-29 18:25:56 +01:00
parent 029b7b4b8f
commit fc4a20329a
1 changed files with 5 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
_posts/2019-11-29-this-week-in-glean.md
View file

@ -28,6 +28,11 @@ The biggest difference?
It's called `deletion_request` ping instead.
On ingestion data from a ping is decoded from its JSON form and put into tables on BigQuery
(in our documentation you can find [an overview of the data pipeline](https://docs.telemetry.mozilla.org/concepts/pipeline/gcp_data_pipeline.html#an-overview-of-mozillas-data-pipeline) if you are interested).
BigQuery table names can only contain alphanumeric characters and underscores (see ["Table naming"](https://cloud.google.com/bigquery/docs/tables#table_naming) in the BigQuery documentation).
We avoid any translation in the pipeline by just enforcing this directly on ping names.
Glean also enforces the payload schema of pings.
Glean itself controls portion of the data, including a sequence number, date field
and a bit of metadata about the application its running in (see [the ping sections](https://mozilla.github.io/glean/book/user/pings/index.html#ping-sections)).