thanks again for the reply magnusbaeck.
i searched logstash_jdbc_last_run file, find it in (c:/users/user), and i deleted it. it s OK 
i have 5 records in my table products, when i go to : http://localhost:9200/products/product/_search
i have just the last record as result:
{"took":29,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":1.0,"hits":[{"_index":"products","_type":"product","_id":"%{ProductID}","_score":1.0,"_source":{"productid":991,"productsku":"00035","productname":"Ampoule","productprice":10.0,"productweight":10.0,"productcartdesc":"Ampoule","productshortdesc":"AmpouleAmpoule","productlongdesc":"AmpouleAmpouleAmpouleAmpoule","productthumb":"","productimage":"","productcategoryid":null,"productupdatedate":"2017-01-18T15:03:40.000Z","productstock":100.0,"productlive":false,"productunlimited":true,"productlocation":null,"@version":"1","@timestamp":"2017-01-24T10:18:00.318Z"}}]}}
any idea please ?