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Oran Agra authored
This PR handles several aspects 1. Calls to RM_ReplyWithError from thread safe contexts don't violate thread safety. 2. Errors returning from RM_Call to the module aren't counted in the statistics (they might be handled silently by the module) 3. When a module propagates a reply it got from RM_Call to it's client, then the error statistics are counted. This is done by: 1. When appending an error reply to the output buffer, we avoid updating the global error statistics, instead we cache that error in a deferred list in the client struct. 2. When creating a RedisModuleCallReply object, the deferred error list is moved from the client into that object. 3. when a module calls RM_ReplyWithCallReply we copy the deferred replies to the dest client (if that's a real client, then that's when the error statistics are updated to the server) Note about RM_ReplyWithCallReply: if the original reply had an array with errors, and the module replied with just a portion of the original reply, and not the entire reply, the errors are currently not propagated and the errors stats will not get propagated. Fix #10180 (cherry picked from commit b099889a)
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