Firestore take long time to retrieve data after reconnecting to the Internet (Android)

[marm...@gmail.com]

Application take long time to retrieve any data from firestore in android application after disconnect internet and reconnect it. could i get any help

[Michael Lehenbauer]

You'll need to provide more details about how you're disconnecting / reconnecting and the delays you're seeing. Most helpful would be if you can capture logs after call FirebaseFirestore.setLoggingEnabled(true).

On Sun, Jan 28, 2018 at 5:51 AM, <marm...@gmail.com> wrote:

Application take long time to retrieve any data from firestore in android application after disconnect internet and reconnect it. could i get any help

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[ism...@humbike.com]

Hi Michael,

I'm facing the same problem and can add some detail. I've enabled Firestore logging to see the issue.

Let's say I turn all network connections off on my phone. Then, Firestore will throw this error:

Stream closed with status: zzfof{code=UNAVAILABLE, description=null, cause=java.net.UnknownHostException: Unable to resolve host "firestore.googleapis.com": No address associated with hostname

(full stack trace omitted)

This is followed by:

Backing off for 31774ms (base delay: 25624ms)

This is to be expected: Firestore is disconnected, so the underlying gRPC stream is UNAVAILABLE.

The problem is when I turn mobile data on again. Ever other network-reliant service starts working within ~3s. However, Firestore continues to throw the above error for ~1min (this varies) at a regular interval. During this time, if I try to run a Firestore transaction, I get the following error...:

com.google.firebase.firestore.FirebaseFirestoreException: Transaction failed all retries.

...with the same "UnknownHostException" stack trace as described above. I can trigger the transaction as many times as I like, but it will still fail with this error even though all other network-reliant services are working just fine, and my device is connected to the internet.

Eventually (after ~1min), the logs will show:

[FirestoreCallCredentials]: Successfully fetched token.

After I see this in the logs, I can now successfully execute the Firestore transaction.

This is a really big problem, especially for users in developing markets. There, internet connections are spotty, and users toggle mobile data on/off regularly to conserve data. In these conditions, it is imperative that Firestore handle connectivity interruptions gracefully and speedily. Having to wait 1 whole minute to run a Firestore transaction is extremely disappointing, and forces me to switch to using Cloud Functions with HTTP Triggers as a stopgap solution.

Would be great to see if anyone else has found a solution to this... perhaps we can force Firestore to reconnect somehow? 

On Thursday, February 1, 2018 at 4:23:11 AM UTC+5, Michael Lehenbauer wrote:

You'll need to provide more details about how you're disconnecting / reconnecting and the delays you're seeing. Most helpful would be if you can capture logs after call FirebaseFirestore.setLoggingEnabled(true).

On Sun, Jan 28, 2018 at 5:51 AM, <marm...@gmail.com> wrote:

Application take long time to retrieve any data from firestore in android application after disconnect internet and reconnect it. could i get any help

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