How do I fix client errors saying "Received message larger than max"?

I have a client query that gives an error Received message larger than max. How can I fix this?

gRPC has a default maximum message size of 4MB, but Deephaven clients have a default maximum size of 100MB. Attempting to send messages larger than 100MB will result in an error. To fix this, you should either:

  • Reduce message sizes by breaking them into smaller chunks.
  • Increase the maximum message size on both the client and server.

For the latter, refer to Grpc_arg_keys for available options. The relevant keys are:

  • GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH
  • GRPC_ARG_MAX_SEND_MESSAGE_LENGTH

For the Groovy client, you can set these options when constructing the session via the maxInboundMessageSize method:

import io.deephaven.client.ClientConfig
import io.deephaven.uri.DeephavenTarget

def target = DeephavenTarget.of(URI.create("dh://localhost:10000"))
def clientConfig = ClientConfig.builder()
    .target(target)
    .maxInboundMessageSize(200 * 1024 * 1024) // Increases limit from 100MB to 200MB
    .build()

:::note

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