zhaijack opened a new pull request #1538: Add rate limit for client lookup request URL: https://github.com/apache/incubator-pulsar/pull/1538 ### Motivation Currently broker side has config `maxConcurrentLookupRequest`, and client side has config `concurrentLookupRequest `. If client side send too much lookup request, broker will fail the lookup request with `ServerError.TooManyRequests`. This change try to make rate limit of lookup request from client side. ### Modifications Add new parameter `maxLookupRequest` in clientConfiguration, and do rate limit in ClientCnx. ### Result Client side lookup could be rate-limited, and avoid server side return error.
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