Simplify Distributor.push #4240
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Instead of creating another goroutine to wait for the background `sendSamples()` to finish, give the channels it is sending on a buffer so that they can send without a listener. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
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Alternative to #4238, fixing #4169 in a simpler way. This is how it was done in Cortex cortexproject/cortex#1641
Instead of creating another goroutine to wait for the background
sendSamples()to finish, give the channels it is sending on a buffer so that they can send without a listener.