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https://issues.apache.org/jira/browse/CAMEL-15320?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17162211#comment-17162211
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Andrea Cosentino commented on CAMEL-15320:
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There are other issues reported about this component. [~oalsafi] is working on
this
> grpc errors on camel-google-pubsub with apache camel 3.2.0 or higher
> ---------------------------------------------------------------------
>
> Key: CAMEL-15320
> URL: https://issues.apache.org/jira/browse/CAMEL-15320
> Project: Camel
> Issue Type: Bug
> Components: examples
> Affects Versions: 3.2.0
> Reporter: SAILOKESH DIVI
> Priority: Minor
>
> 1) The current camel examples utilize GooglePubsubConnectionFactory to
> connect to pubsub till 3.1.0
>
> [https://github.com/apache/camel/blob/camel-2.25.2/examples/camel-example-google-pubsub/src/main/java/org/apache/camel/example/google/pubsub/PubsubUtil.java#L36]
>
> This has been removed from camel 3.2 and above and camel can't connect to
> pubsub with grpc errors
>
>
> WARNING: [Channel<1>:
> (<topicName>?maxMessagesPerPoll=10&concurrentConsumers=1)] Failed to resolve
> name. status=Status{code=UNAVAILABLE, description=Unable to resolve host
> <topicName>, cause=java.lang.RuntimeException: java.net.UnknownHostException:
> <topicName>: Name or service not known at
> io.grpc.internal.DnsNameResolver.resolveAll(DnsNameResolver.java:436) at
> io.grpc.internal.DnsNameResolver$Resolve.resolveInternal(DnsNameResolver.java:272)
> at io.grpc.internal.DnsNameResolver$Resolve.run(DnsNameResolver.java:228) at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> at java.lang.Thread.run(Thread.java:748) Caused by:
> java.net.UnknownHostException: <topicName>: Name or service not known at
> java.net.Inet4AddressImpl.lookupAllHostAddr(Native Method) at
> java.net.InetAddress$2.lookupAllHostAddr(InetAddress.java:929) at
> java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1324) at
> java.net.InetAddress.getAllByName0(InetAddress.java:1277) at
> java.net.InetAddress.getAllByName(InetAddress.java:1193) at
> java.net.InetAddress.getAllByName(InetAddress.java:1127) at
> io.grpc.internal.DnsNameResolver$JdkAddressResolver.resolveAddress(DnsNameResolver.java:646)
> at io.grpc.internal.DnsNameResolver.resolveAll(DnsNameResolver.java:404) ...
> 5 more
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