# Cat shards API return different size on a same shard **URL:** \ **Category:** Elasticsearch\ **Created:** [February 19, 2018, 4:46am UTC](https://discuss.elastic.co/t/cat-shards-api-return-different-size-on-a-same-shard/120394 "2018-02-19T04:46:17Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![James\_Yin](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/james_yin/32/17428_2.png) [@James\_Yin](https://discuss.elastic.co/u/James_Yin)\ **Post date:** [February 19, 2018, 4:46am UTC](https://discuss.elastic.co/t/cat-shards-api-return-different-size-on-a-same-shard/120394/1 "2018-02-19T04:46:18Z")
I used Elasticsearch 5.2.2 in a cluster. We found sometimes the cart shards API return different size on a same shard, but there are not any documents to add and delete. We use cat shards API to get the shard size 4 times, at 1st, 2nd and 4th, The API all return 79853341543 , but at 3rd call, the shard size is 159725282695. http://${host}/\_cat/shards/index\_001?v&s=shard:desc,prirep:desc&bytes=b index shard prirep state docs store ip node index\_001 4 r STARTED 526340015 79853341543 163.59.123.56 es\_data\_node\_055 index\_001 4 r STARTED 526340015 79853341543 163.59.123.56 es\_data\_node\_055 index\_001 4 r STARTED 526340015 159725282695 163.59.123.56 es\_data\_node\_055 index\_001 4 r STARTED 526340015 79853341543 163.59.123.56 es\_data\_node\_055 Why? what store size is the real size? ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [March 19, 2018, 4:46am UTC](https://discuss.elastic.co/t/cat-shards-api-return-different-size-on-a-same-shard/120394/2 "2018-03-19T04:46:20Z")
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