customer runs a replication job that replicates 600 tables with 10 tasks instance, they got below error :

From the BQ doc in the error message,

• rateLimitExceeded. This value indicates a short-term limit. To resolve these limit issues, retry the operation after few seconds. Use exponential backoff between retry attempts. That is, exponentially increase the delay between each retry

So I think we need to handle that in below line