es索引查询结果不一致，每次查询结果在返回1条和返回5条间进行切换

主要问题：es中索引查询结果不一致，每次查询结果在返回1条和返回5条(返回5条时结果包含返回一条时的数据)间进行切换。ES索引的配置为3个shard，1个replica，具体setting如下：

"settings": {

"index": {

"refresh_interval": "1s",

"number_of_shards": "3",

"provided_name": "events-history-thumb451201265-2020070915",

"creation_date": "1595301025420",

"analysis": {

"analyzer": {

"default": {

"type": "ik_max_word"

}

}

},

"number_of_replicas": "1",

"uuid": "GEYOmAevQ9OEck87Ti2U2g",

"version": {

"created": "5061699"

}

}

通过es-head插件查看索引状态，发现primaries中的doc个数为1，而total中的doc是6，结果不一致(在两个副本场景下，total中的doc个数应该是primaries的2倍，具体如下：

"primaries": {

"docs": {

"count": 1,

"deleted": 9

},

"store": {

"size_in_bytes": 149316,

"throttle_time_in_millis": 0

}



-------------------------------------------------------



"total": {

"docs": {

"count": 6,

"deleted": 55

},

"store": {

"size_in_bytes": 182359,

"throttle_time_in_millis": 0

},

通过执行/_cat/shard发现该索引中有个shard副本4条数据，但主副本没有数据，如下所示：

index                                    shard prirep state   docs  store ip              node

events-history-thumb451201265-2020070915 1     p      STARTED    0 46.3kb 192.168.77.181  cdh-worker-1

events-history-thumb451201265-2020070915 1     r      STARTED    0   191b 192.168.146.247 cdh-worker-3

events-history-thumb451201265-2020070915 2     r      STARTED    4 12.7kb 192.168.164.71  cdh-worker-2

events-history-thumb451201265-2020070915 2     p      STARTED    0 53.2kb 192.168.77.181  cdh-worker-1

events-history-thumb451201265-2020070915 0     p      STARTED    1 19.2kb 192.168.164.71  cdh-worker-2

events-history-thumb451201265-2020070915 0     r      STARTED    1 19.7kb 192.168.146.247 cdh-worker-3

不清楚是什么原因会导致es中数据出现不同步？