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Firebase Cloud Function with Firestore returning “Deadline Exceeded”

I took one of the sample functions from the Firestore documentation and was able to successfully run it from my local firebase environment. However, once I deployed to my firebase server, the function completes, but no entries are made in the firestore database. The firebase function logs show "Deadline Exceeded." I'm a bit baffled. Anyone know why this is happening and how to resolve this?

Here is the sample function:

exports.testingFunction = functions.https.onRequest((request, response) =>
var data =
name: 'Los Angeles',
state: 'CA',
country: 'USA'
;

// Add a new document in collection "cities" with ID 'DC'
var db = admin.firestore();
var setDoc = db.collection('cities').doc('LA').set(data);

response.status(200).send();
);


doc(...).set(data)

return db.collection('cities').doc('LA').set(data).then(result => response.status(200))

2 Answers
2

Firestore has limits.

Probably “Deadline Exceeded” happens because of its limits.

See this. https://firebase.google.com/docs/firestore/quotas

Maximum write rate to a document 1 per second

https://groups.google.com/forum/#!msg/google-cloud-firestore-discuss/tGaZpTWQ7tQ/NdaDGRAzBgAJ

I have written this little script which uses batch writes (max 500) and only write one batch after the other.

use it by first creating a batchWorker let batch: any = new FbBatchWorker(db);
Then add anything to the worker batch.set(ref.doc(docId), MyObject);. And finish it via batch.commit().
The api is the same as for the normal Firestore Batch (https://firebase.google.com/docs/firestore/manage-data/transactions#batched-writes) However, currently it only supports set.

let batch: any = new FbBatchWorker(db);

batch.set(ref.doc(docId), MyObject);

batch.commit()

set

import firestore from "firebase-admin";


export default class FbBatchWorker

db: firestore.Firestore;
batchList: FirebaseFirestore.WriteBatch = ;
elemCount: number = 0;

constructor(db: firestore.Firestore)
this.db = db;
this.batchList.push(this.db.batch());


async commit(): Promise<any>
let batchProms: Promise<any> = ;

for (let _batch of this.batchList)
(await _batch.commit());
console.log("finished writing batch");
// batchProms.push(_batch.commit());


// return Promise.all(batchProms);
return Promise.resolve("yeah");


set(dbref: FirebaseFirestore.DocumentReference, data: any): void
this.elemCount = this.elemCount + 1;
if (this.elemCount % 490 === 0)
this.batchList.push(this.db.batch());

this.batchList[this.batchList.length - 1].set(dbref, data);





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