Firebase Cloud Messaging (FCM) - problem with delivery when using multiple topics in condition

Michał Machniak

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Jun 30, 2021, 4:53:34 AM6/30/21

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I'm facing a problem with Firebase Cloud Messaging for some time. My Android application can be subscribed to one of two topic (either AtopicA or BtopicB).

I used to send messages through Firebase API. There I used combined condition to send notification to both groups at once:

"condition": "'AtopicA' in topics || 'BtopicB' in topics",

However, it stopped working some time ago.

What is more, I I've figured out, that when using just one topic in the condition - e.g. using just "condition": "'AtopicA' in topics" - it works ok and messages are being delivered. However, when using combined condition, it fails.

I've contacted Firebase Support, which confirmed an issue at Firebase's end here. Unfortunately, there wasn't able to share any timeline for fixing that isssue. I also cannot see any outage reported at Firebase status webpage.

Do you encounter the same problems with FCM?

Is there somebody from Firebase Dev Team here, who could actualy say what's going on? :)

Kato Richardson

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Jul 2, 2021, 12:29:16 PM7/2/21

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Michael, do you have the case id (found in the auto reply subject) you submitted?

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Michał Machniak

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Jul 2, 2021, 11:50:50 PM7/2/21

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Kato, sure - that would be: 00142535.

Michał Machniak

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Jul 6, 2021, 5:14:37 AM7/6/21

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Hello,

Did you manage to find some informations about that case?

I would appreciate an answer. Thanks!

Kato Richardson

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Jul 7, 2021, 11:35:56 AM7/7/21

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Looks like an issue was identified with OR queries returning a 200 status code but not being delivered. Investigation is ongoing (slow due to holiday weekend). Impact is unclear and fairly difficult to measure. Expect updates through the support case going forward.

Note that there is a workaround mentioned here.

☼, Kato

To view this discussion on the web visit https://groups.google.com/d/msgid/firebase-talk/cfdf1e86-878b-4f01-93a5-b2c7e28b37c3n%40googlegroups.com.

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