Update the SQL script used for generating latest snapshot.

[sophie4869]

The old script uses FIRST_VALUE and OVER, which sorts the entire changelog and finds the first record for each document. It can result in a memory issue when running BigQuery reading from the latest snapshot. (Resources exceeded during query execution: The query could not be executed in the allotted memory. Peak usage: 110% of limit. Top memory consumer(s): sort operations used for analytic OVER() clauses: 96%)

The updated script selects the maximum timestamp for each document_id, and joins back with the table by the latest timestamp instead.

[dackers86]

Thanks @sophie4869.

This will be tested internally and has been added to the tracker for reviewing.

[dackers86]

@sophie4869 There is a slight delay for reviewing this, I am currently experiencing installation issues...

ext-firestore-bigquery-export-fsexportbigquery
{"@type":"type.googleapis.com/google.cloud.audit.AuditLog","status":{"code":3,"message":"Build failed: npm ERR! cipm can only install packages when your package.json and package-lock.json or npm-shrinkwrap.json are in sync. Please update your lock file with `npm install` before continuing.\nnpm ERR! \nnpm ERR! \nnpm ERR! Missing: @firebaseextensions/firestore-bigquery-change-tracker@^1.1.10\nnpm ERR! \n\nnpm ERR! A complete log of this run can be found in:\nnpm ERR! /www-data-home/.npm/_logs/2021-08-10T12_35_21_209Z-debug.log; Error ID: beaf8772"},"authenticationInfo":{"principalEmail":"[email protected]"},"serviceName":"cloudfunctions.googleapis.com","methodName":"google.cloud.functions.v1.CloudFunctionsService.CreateFunction","resourceName":"projects/extensions-testing/locations/us-central1/functions/ext-firestore-bigquery-export-fsexportbigquery"}

This is perhaps related to https://github.com/firebase/extensions/pull/701

[dackers86]

Hi @sophie4869.

The latest updates from the next branch will now fix npm errors when installing locally.

With these updates, CI should also now run the tests which also need to be updated to match the changes you have made.

The updates look great after reviewing on a test installation - If you can update the above we can look at getting this approved. Any questions, let me know!

[dgilperez]

+1 to solving this problem. I could work on this if a hand is required

[dackers86]

Thanks @dgilperez. We are appreciate prs/updates from the community (and provide credit for contributions).

Otherwise this is still in our backlog to update/complete.

[dgilperez]

Thanks for the quick reply @dackers86. Shall I open a new PR as a fork from this one, or @sophie4869 do you want me to work on your fork (I guess you'll need to grant me permissions). I will do the former if there is no quick response from Sophie, if that's OK

[sophie4869]

I can take a look by the end of the week. Does that work for you?

On Mon, 14 Mar 2022, 16:32 David Gil, @.***> wrote:

Thanks for the quick reply @dackers86 https://github.com/dackers86. Shall I open a new PR as a fork from this one, or @sophie4869 https://github.com/sophie4869 do you want me to work on your fork (I guess you'll need to grant me permissions). I will do the former if there is no quick response from Sophie, if that's OK

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[dgilperez]

@sophie4869 I created a new PR at https://github.com/firebase/extensions/pull/915, with your changes rebased. I could not run the test suite (did not know how) and did not hook the extension to a real Firebase project either.

But I am running your queries in my BigQuery views with good results 👍

[meyerovb]

Will this cover if there are null time stamps or the latest entry for a document has two entries with the same timestamp?

[cabljac]

Closing this as reopened (these commits rebased on next) and tracked in a PR here: https://github.com/firebase/extensions/pull/1288