hi I am using ES5.5
failed to execute pipeline for a bulk request,butiostat ,iotop,loadavage,cpu is low, what is es doing,?
[2017-09-11T00:50:54,198][ERROR][o.e.a.b.TransportBulkAction] [tVsCQ08] failed to execute pipeline for a bulk request
org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution of org.elasticsearch.ingest.PipelineExecutionService$2@67694a40 on EsThreadPoolExecutor[bulk, queue capacity = 200, org.elasticsearch.common.util.concurrent.EsThreadPoolExecutor@f6f4880[Running, pool size = 24, active threads = 24, queued tasks = 200, completed tasks = 86725255]]