Datastore emulator message type mismatch

[Jagath Weerasinghe]

Hello, 

I tried to start the datastore emulator in my local dev environment (Java 8) and got the following error. Looks to me it happens because of a mismatch of protobuf versions. It would be great if you know of any workaround for this. Thanks. 

Jagath

Cloud SDK Version: 313. 

OS: macOS

$ gcloud beta emulators datastore start

Executing: /Users/w/Work/google-cloud/google-cloud-sdk/platform/cloud-datastore-emulator/cloud_datastore_emulator create --project_id=<aaaa> /Users/w/.config/gcloud/emulators/datastore

[datastore] Oct 09, 2020 12:28:45 PM com.google.cloud.datastore.emulator.CloudDatastore$CreateAction$1 apply

[datastore] INFO: Provided project_id to Cloud Datastore emulator create command, which is no longer necessary.

[datastore] Created new Cloud Datastore project in '/Users/w/.config/gcloud/emulators/datastore'.

Executing: /Users/w/Work/google-cloud/google-cloud-sdk/platform/cloud-datastore-emulator/cloud_datastore_emulator start --host=localhost --port=8081 --store_on_disk=True --consistency=0.9 --allow_remote_shutdown /Users/w/.config/gcloud/emulators/datastore

[datastore] Oct 09, 2020 12:28:45 PM com.google.cloud.datastore.emulator.CloudDatastore$FakeDatastoreAction$9 apply

[datastore] INFO: Provided --allow_remote_shutdown to start command which is no longer necessary.

[datastore] Oct 09, 2020 12:28:45 PM com.google.cloud.datastore.emulator.impl.LocalDatastoreFileStub <init>

[datastore] INFO: Local Datastore initialized:

[datastore] Type: High Replication

[datastore] Storage: /Users/w/.config/gcloud/emulators/datastore/WEB-INF/appengine-generated/local_db.bin

[datastore] Exiting due to exception: java.lang.IllegalArgumentException: Extension is for type "proto2.MethodOptions" which does not match message type "google.protobuf.MethodOptions".

[barrado]

Could you retry the command with the --log-http and --verbosity=DEBUG wide flags enabled to see if it gives more information about the error?

[Jagath Weerasinghe]

Unfortunately, not much data shown with the added flags. 

$ gcloud beta emulators datastore start --log-http --verbosity=debug

DEBUG: Running [gcloud.beta.emulators.datastore.start] with arguments: [--log-http: "true", --verbosity: "debug"]

WARNING: Reusing existing data in [/Users/w/.config/gcloud/emulators/datastore].

DEBUG: Found Cloud SDK root: /Users/w/Work/google-cloud/google-cloud-sdk

Executing: /Users/w/Work/google-cloud/google-cloud-sdk/platform/cloud-datastore-emulator/cloud_datastore_emulator start --host=localhost --port=8081 --store_on_disk=True --consistency=0.9 --allow_remote_shutdown /Users/w/.config/gcloud/emulators/datastore

[datastore] Oct 12, 2020 4:44:33 PM com.google.cloud.datastore.emulator.CloudDatastore$FakeDatastoreAction$9 apply

[datastore] INFO: Provided --allow_remote_shutdown to start command which is no longer necessary.

[datastore] Oct 12, 2020 4:44:33 PM com.google.cloud.datastore.emulator.impl.LocalDatastoreFileStub <init>

[datastore] INFO: Local Datastore initialized:

[datastore] Type: High Replication

[datastore] Storage: /Users/w/.config/gcloud/emulators/datastore/WEB-INF/appengine-generated/local_db.bin

[datastore] Exiting due to exception: java.lang.IllegalArgumentException: Extension is for type "proto2.MethodOptions" which does not match message type "google.protobuf.MethodOptions".

INFO: Display format: "default"

[barrado]

Hi,

I recommend you to post this question in StackOverflow as it will have greater visibility and other user might be able to help you. 

[Jagath Weerasinghe]

Done. Thanks.

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