Error: connect ETIMEDOUT 13.107.42.20:443 when working with a large number (about 450) of work items

[jwang242]

The task works fine with a query which returns less than 100 work items.

However, for a query that returns about 450 work items, the task always fails with the following errors:
Error: connect ETIMEDOUT 13.107.42.20:443

When system diagnostics is enabled
##[debug]Caught an error in main: Error: read ECONNRESET
##[debug]task result: Failed
##[error]Error: read ECONNRESET
##[debug]Processed: ##vso[task.issue type=error;]Error: read ECONNRESET
##[debug]Processed: ##vso[task.complete result=Failed;]Error: read ECONNRESET

The task is set to retry 10 times and all failed. Sometimes it timed out when processing 100 items, sometimes it was able to process more items... So it's not consistent as to when it times out.

I set the 'workItemLimit' to 500. Is there an upper limit?