Commits on Jan 23, 2020

1. Added support for dynamic queue sizes. …

   * Introduces the new flags: collector.dyn-queue-size-warmup and collector.dyn-queue-size-memory.
   * When the warm-up flag is set, the span processor starts a new background process to recalculate the queue capacity at regular intervals.
   * The span processor now keeps track of the number of spans it has seen, as well as the total bytes it processed. That information allows to derive the average spans size that the collector has processed. Along with the memory to allocate, we can come up with the ideal queue size.
   * New metrics: jaeger_collector_queue_capacity and jaeger_collector_spans_bytes.
   
   This commit shouldn't cause performance degradation for instances not using the new options, except for a small memory overhead due to the new span tracker (quantity/size) and the new metrics.
   
   Signed-off-by: Juraci Paixão Kröhling <juraci@kroehling.de>

   

   jpkrohling committed Jan 23, 2020
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