gc warn

[2017-10-11T03:36:54,235][WARN ][o.e.m.j.JvmGcMonitorService] [es02_client] [gc][young][2223526][3673] duration [4.5s], collections [1]/[5.1s], total [4.5s]/[2.5m], memory [951.9mb]->[435.4mb]/[4.9gb], all_pools {[young] [530.8mb]->[820.7kb]/[532.5mb]}{[survivor] [16.7mb]->[30.1mb]/[66.5mb]}{[old] [404.3mb]->[404.4mb]/[4.3gb]}
[2017-10-11T03:36:54,236][WARN ][o.e.m.j.JvmGcMonitorService] [es02_client] [gc][2223526] overhead, spent [4.5s] collecting in the last [5.1s]
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一般是堆内存不足导致的,或者是很复杂的查询、聚合操作,或者批量插入、更新操作

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