1.数据转移，数据复制
amazon_base_listing为新的索引，amazon_base_listing_1为旧的索引.
把amazon_base_listing_1的数据复制到amazon_base_listing中
_reindex
{"source":{"index":"amazon_base_listing"},"dest":{"index":"amazon_base_listing_1"}}
2.删除字段
_update
{"script":"ctx._source.remove(\"amazonBaseListing\")"}
3.查找重复的数据
buckets里面如果有值则证明有重复的数据，如果为空则没有重复的数据
http://192.168.3.93:9200/es_operation_log/esOperationLog/
_search
{"size":0,"aggs":{"duplicateCount":{"terms":{"script":"doc['operationType'].value + doc['operator'].value","min_doc_count":2},"aggs":{"duplicateDocuments":{"top_hits":{}}}}}}