our's es' version is 1.7.4 ,today es-6 is down and is unavailable ,es-6'shard move to es-7 ,at this moment ,
[es-m-7] [14297421] Failed to execute fetch phase
org.elasticsearch.common.util.concurrent.EsRejectedExecutionException: rejected execution (queue capacity 1000)
es-7' load is high but other node is normal and search queue is low
i think maybe is a bug,