Ack fails, with "Failed to acknowledge" or Failed to "modifyAckDeadline"

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Environment details

• OS: Ubuntu 18.04
• Node.js version: 11.15
• npm version: 6.11.2
• @google-cloud/pubsub version: 32.0

Steps to reproduce

1. Use version 0.31 or 0.32

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Thanks!

80 % of messages fails to ack. Going back to version 0.22.2 the Ack errors disappears.

[gberth]

No, native Node with project reference. As errors disappeared after deploying to the cloud, I think you can close this, and keep it as a reference that something is different (probably some network thing) between 0.22 and 1.0.

Regards Gunnar

[callmehiphop]

@gberth thanks! You might try increasing the request timeout for acks/modacks. You can do it like so

const sub = topic.subscription('my-sub', {
  batching: {
    callOptions: {
      timeout: 60000
    }
  }
});

It might also be worth noting that other users have reported similar issues when they create a lot of Subscription objects. The gRPC channel can only handle so many concurrent streams, so if you do have a lot of Subscription objects, I might suggest trying to either cache and re-use them where possible OR lower the number of streams created per Subscription object.

const sub = topic.subscription('my-sub', {
  streamingOptions: {
    maxStreams: 1
  }
});