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https://issues.apache.org/jira/browse/NIFI-9530?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17468693#comment-17468693
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David Handermann commented on NIFI-9530:
----------------------------------------
Thanks for reporting this issue [~comtef]. It appears that the problem was
introduced in NiFi 1.15.2 as a result of bringing in some changes for
NIFI-9491, which excluded commons-logging in many places. Those changes ended
up bringing in an unintentional dependency on
google-cloud-pubsublite-1.3.0.jar, which referenced newer versions of the
underlying GRPC libraries, causing the runtime class conflict. This should be
working as expected on the current main branch with additional changes part of
NIFI-9304, so adjustments to the patch release version still need to be
evaluated.
> ConsumeGCPubSub not working in Nifi 1.15.2
> ------------------------------------------
>
> Key: NIFI-9530
> URL: https://issues.apache.org/jira/browse/NIFI-9530
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.15.2
> Reporter: Fabien Comte
> Priority: Blocker
> Labels: GCP, pubsub
>
> After upgrading to Nifi 1.15.2 processor ConsumeGCPubSub fails with the
> following error :
> {noformat}
> ConsumeGCPubSub[id=25584328-017e-1000-1436-ae76db147150] Failed to properly
> initialize Processor. If still scheduled to run, NiFi will attempt to
> initialize and run the Processor again after the 'Administrative Yield
> Duration' has elapsed. Failure is due to java.lang.NoClassDefFoundError:
> io/grpc/internal/ManagedChannelImplBuilder$ChannelBuilderDefaultPortProvider:
> java.lang.ClassNotFoundException:
> io.grpc.internal.ManagedChannelImplBuilder$ChannelBuilderDefaultPortProvider
> ↳ causes: java.lang.NoClassDefFoundError:
> io/grpc/internal/ManagedChannelImplBuilder$ChannelBuilderDefaultPortProvider{noformat}
> Processor was working successfully in previous versions (1.13.2 / 1.14.0 /
> 1.15.0 / 1.15.1)
> Steps to reproduce :
> * Launch Nifi 1.15.2
> ** Used docker : docker run --name nifi -p 8443:8443 -d apache/nifi:1.15.2
> * Connect to Nifi instance
> * Create a processor ConsumeGCPubSub and configure it with minimal settings
> ** Credentials Provider Service
> ** Project and suscription
> * Link it to another created processor (used DebugFlow)
> * Start processors
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