# ES 1.7 data loss **URL:** https://discuss.elastic.co/t/es-1-7-data-loss/61755 **Category:** Elasticsearch **Created:** [September 29, 2016, 1:22am UTC](https://discuss.elastic.co/t/es-1-7-data-loss/61755 "2016-09-29T01:22:50Z") **Posts on this page:** 3 **Page:** 1
### Author: ![Gunho\_Shin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/gunho_shin/32/12210_2.png) [@Gunho\_Shin](https://discuss.elastic.co/u/Gunho_Shin) #### Post date: [September 29, 2016, 1:22am UTC](https://discuss.elastic.co/t/es-1-7-data-loss/61755/1 "2016-09-29T01:22:50Z")
Hello, I using ES 1.7 for log storage. I have 1 master(no data) & 1 data nodes. My app has been separated for write and search. Today, I found something strange. Data has been loss depend on writing position. case 1 - Writing app send bulk request to master node (Java API). - Searching app send search request to master node (REST API). = data loss occurred (few hundred per minute). case 1 - Writing app send bulk request to data node (Java API). - Searching app send search request to master node (REST API). = data loss not occurred. I using default config for my cluster. I'm confused this situation. somebody help? ---
### Author: ![dadoonet](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/dadoonet/32/137187_2.png) [@dadoonet](https://discuss.elastic.co/u/dadoonet) #### Post date: [September 29, 2016, 6:23am UTC](https://discuss.elastic.co/t/es-1-7-data-loss/61755/2 "2016-09-29T06:23:15Z")
I'm pretty sure you have something in logs. That being said, why this architecture? I'd go either with one node only (no redundancy no HA) or 3 nodes (2 data and one master only). ---
### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system) #### Post date: [July 5, 2017, 10:16pm UTC](https://discuss.elastic.co/t/es-1-7-data-loss/61755/3 "2017-07-05T22:16:15Z")