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Set the basic QOS on a channel to avoid infinite prefetching. #55
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dadoonet
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Aug 19, 2014
Setting `qos_prefetch_size` will define maximum amount of content (measured in octets) that the server will deliver (0 if unlimited - default). Setting `qos_prefetch_count` will define maximum number of messages that the server will deliver (0 if unlimited). Default to `bulk_size*2`. Closes #38. Closes #55.
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Without executing
Channel.basicQos(), ElasticSearch's RabbitMQ client will prefetch an infinite number of messages from the queue and eventually run out of heap space.This patch limits the prefetched messages to twice the amount specified by the river's
bulk_size.It might make sense to make this a configuration option as either an absolute number or multiple.