[GitHub] [beam] kennknowles opened a new issue, #18476: GCP IO exposes protobuf on its API surface, causing user pain

[GitBox <gi...@apache.org>]

kennknowles opened a new issue, #18476:
URL: https://github.com/apache/beam/issues/18476

   Putting the SDK, DataflowRunner, and GCP IO on the same classpath, results in (at least) three versions of protobuf getting pulled in. These should be made to converge. We should consider using maven enforcer, which I think can check this.
   
   ```
   
   [INFO] com.example:foo:jar:0.1
   [INFO] +- org.apache.beam:beam-sdks-java-core:jar:2.0.0:compile
   [INFO]
   +- org.apache.beam:beam-sdks-java-io-google-cloud-platform:jar:2.0.0:compile
   [INFO] |  +- org.apache.beam:beam-sdks-java-extensions-protobuf:jar:2.0.0:compile
   [INFO]
   |  |  \- (com.google.protobuf:protobuf-java:jar:3.2.0:compile - omitted for duplicate)
   [INFO] |  +-
   com.google.api.grpc:grpc-google-pubsub-v1:jar:0.1.0:compile
   [INFO] |  |  +- (com.google.protobuf:protobuf-java:jar:3.0.0:compile
   - omitted for conflict with 3.2.0)
   [INFO] |  |  \- com.google.api.grpc:grpc-google-iam-v1:jar:0.1.0:compile
   [INFO]
   |  |     \- (com.google.protobuf:protobuf-java:jar:3.0.0:compile - omitted for conflict with 3.2.0)
   [INFO]
   |  +- com.google.cloud.datastore:datastore-v1-proto-client:jar:1.4.0:compile
   [INFO] |  |  +- (com.google.cloud.datastore:datastore-v1-protos:jar:1.3.0:compile
   - omitted for duplicate)
   [INFO] |  |  +- (com.google.http-client:google-http-client:jar:1.20.0:compile
   - omitted for conflict with 1.22.0)
   [INFO] |  |  +- com.google.http-client:google-http-client-protobuf:jar:1.20.0:compile
   [INFO]
   |  |  |  +- (com.google.http-client:google-http-client:jar:1.20.0:compile - omitted for conflict with
   1.22.0)
   [INFO] |  |  |  \- (com.google.protobuf:protobuf-java:jar:2.4.1:compile - omitted for conflict
   with 3.2.0)
   [INFO] |  +- com.google.cloud.datastore:datastore-v1-protos:jar:1.3.0:compile
   [INFO] | 
   |  +- (com.google.protobuf:protobuf-java:jar:3.0.0:compile - omitted for conflict with 3.2.0)
   [INFO]
   |  +- com.google.cloud.bigtable:bigtable-protos:jar:0.9.6.2:compile
   [INFO] |  |  +- (com.google.code.findbugs:jsr305:jar:3.0.1:compile
   - omitted for duplicate)
   [INFO] |  |  +- (com.google.protobuf:protobuf-java:jar:3.2.0:compile - omitted
   for duplicate)
   
   ```
   
   
   Incidentally, the dependency plugin stopped supporting the verbose tree, so we can't even visually inspect this except by downgrading.
   
   Imported from Jira [BEAM-2523](https://issues.apache.org/jira/browse/BEAM-2523). Original Jira may contain additional context.
   Reported by: kenn.


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