Unable to resolve host firestore.googleapis.com (due to grpc?)

[RohovDmytro]

[READ] Step 1: Are you in the right place?

[REQUIRED] Step 2: Describe your environment

For the last 1.5 I have a problem that creates errors in logs.

Unable to resolve host firestore.googleapis.com

[REQUIRED] Step 3: Describe the problem

The error happns when the app goes background.

Steps to reproduce:

Open app, press "Home".

Relevant

I've noticed we are using the 1.62.2 version of grpc. Version 1.65.0

services: restore //services:binarylog bazel target (grpc/grpc-java#11292) (grpc/grpc-java@d57f271). This fixes a regression introduced in 1.62.2

THis might be a relevant bug fix.

[google-oss-bot]

I couldn't figure out how to label this issue, so I've labeled it for a human to triage. Hang tight.

[RohovDmytro]

The logs:

(25.1.2) [WatchStream]: (58c753a) Stream closed with status: Status{code=UNAVAILABLE, description=Unable to resolve host firestore.googleapis.com, cause=java.lang.RuntimeException: java.net.UnknownHostException: Unable to resolve host "firestore.googleapis.com": No address associated with hostname
                                                                                                    	at io.grpc.internal.DnsNameResolver.resolveAddresses(DnsNameResolver.java:222)
                                                                                                    	at io.grpc.internal.DnsNameResolver.doResolve(DnsNameResolver.java:281)
                                                                                                    	at io.grpc.internal.DnsNameResolver$Resolve.run(DnsNameResolver.java:318)
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
                                                                                                    	at java.lang.Thread.run(Thread.java:1012)
                                                                                                    Caused by: java.net.UnknownHostException: Unable to resolve host "firestore.googleapis.com": No address associated with hostname
                                                                                                    	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:156)
                                                                                                    	at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
                                                                                                    	at java.net.InetAddress.getAllByName(InetAddress.java:1152)
                                                                                                    	at io.grpc.internal.DnsNameResolver$JdkAddressResolver.resolveAddress(DnsNameResolver.java:642)
                                                                                                    	at io.grpc.internal.DnsNameResolver.resolveAddresses(DnsNameResolver.java:218)
                                                                                                    	at io.grpc.internal.DnsNameResolver.doResolve(DnsNameResolver.java:281) 
                                                                                                    	at io.grpc.internal.DnsNameResolver$Resolve.run(DnsNameResolver.java:318) 
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) 
                                                                                                    	at java.lang.Thread.run(Thread.java:1012) 
                                                                                                    Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
                                                                                                    	at libcore.io.Linux.android_getaddrinfo(Native Method)
                                                                                                    	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
                                                                                                    	at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:222)
                                                                                                    	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
                                                                                                    	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)
                                                                                                    	at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103) 
                                                                                                    	at java.net.InetAddress.getAllByName(InetAddress.java:1152) 
                                                                                                    	at io.grpc.internal.DnsNameResolver$JdkAddressResolver.resolveAddress(DnsNameResolver.java:642) 
                                                                                                    	at io.grpc.internal.DnsNameResolver.resolveAddresses(DnsNameResolver.java:218) 
                                                                                                    	at io.grpc.internal.DnsNameResolver.doResolve(DnsNameResolver.java:281) 
                                                                                                    	at io.grpc.internal.DnsNameResolver$Resolve.run(DnsNameResolver.java:318) 
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
                                                                                                    	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644) 
                                                                                                    	at java.lang.Thread.run(Thread.java:1012) 
                                                                                                    }.

[lehcar09]

Hi @RohovDmytro, thank you for reaching out and reporting the issue. I was able to reproduce the issue. Let me raise this to our engineers and see what we can do here. Thanks!

[wu-hui]

Hi @RohovDmytro

May I ask what makes you think this is the fix to the issue?

[RohovDmytro]

@wu-hui That's the best guess. It took me a while to investigate without any good solutions. The closest is grpc. I was checking the changelog and there were mentions of stability of connection while going background (1.65.* version).

[wu-hui]

I have created a PR to upgrade: #6744

Would you give it a try to see if this fixes your problem?