Retrieving metadata for large workflows

When requesting metadata for large workflows (thousands of executions), I'm repeatedly getting server timeouts after 20s. I believe this is a server-side timeout from cromwell and it seems likely that the workflow is too large to be effectively returned after the 20s timeout. I've found which suggests that this is a known problem. However, I'm curious if there are settings that can be manipulated to extend the 20s timeout and allow metadata to be returned if I'm patient?

Specifically, would adding something like this to my cromwell configuration be a good idea? Or is there a better way to retrieve the metadata? (Found this at:

spray.can {
  server {
    request-timeout = 40s
  client {
    request-timeout = 40s
    connecting-timeout = 40s

Compute Resources

  • Platform: Google Cloud Platform
  • Cromwell (version: "26-22fe860-SNAP") VM: 4 core, 26GB VM (n1-highmem-4) running Ubuntu 14.04.5 LTS.
  • Mysql VM: 2 core, 7.5GB VM (n1-standard-2) for mysql running Ubuntu 16.04.2 LTS.

Best Answer


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