Issue Summary

When pushing to a pull requests' from branch, push activities might not show up and the pull request might remain un-mergeable if there are a lot of rescope requests in the database.

Steps to Reproduce

1. Pause rescoping or delay rescoping through any means.
2. Have at least 3000 open pull requests and perform 3-4 separate pushes to each of them.
3. Un-pause rescoping or let rescoping resume.

Expected Results

Rescoping continues and push activities show up on the pull requests, making them mergeable.

Actual Results

The below exception is thrown in the atlassian-mesh.log file:

io.grpc.netty.NettyServerStream Exception processing message
io.grpc.StatusRuntimeException: RESOURCE_EXHAUSTED: gRPC message exceeds maximum size XXXXXXX: YYYYYYYYY

Workaround

Temporarily change this config property in bitbucket.properties:

plugin.bitbucket-git.mesh.grpc.max-message-size=YYYYYYYYY

where YYYYYYYYY is bigger than in the error message above, with some safety margin.