# Elastic to provide active primary shards percent metric **URL:** \ **Category:** Elasticsearch\ **Created:** [March 23, 2018, 12:33am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285 "2018-03-23T00:33:10Z")\ **Posts on this page:** 5\ **Page:** 1
**Author:** ![fhalde](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fhalde/32/21419_2.png) [@fhalde](https://discuss.elastic.co/u/fhalde)\ **Post date:** [March 23, 2018, 12:33am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285/1 "2018-03-23T00:33:10Z")
We are trying to show metrics such as yield & harvest. Yield is basically how much of data is available for searching. The problem with active\_shards\_percent\_as\_num is that it considers both primary and replica. But let's say there are no replica assigned for a index. Then the active\_shards\_percent\_as\_num is 50%. We can't use this number for denoting the yield since we have all the primaries hence the yield should be 100% I don't see a way of calculating the percentage purely based on active\_primary\_shard count [how do I know how many primary shards are there in the cluster when things are messy] ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 23, 2018, 12:46am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285/2 "2018-03-23T00:46:41Z")
`active_shards_percent_as_num` gives you an accurate number of all the data that is searchable. It doesn't consider indices with 0 replicas into account, because as long as the primary shards are available what's the concern? What's the perceived value in this metric you want to calculate? ---
**Author:** ![fhalde](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/fhalde/32/21419_2.png) [@fhalde](https://discuss.elastic.co/u/fhalde)\ **Post date:** [March 23, 2018, 12:53am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285/3 "2018-03-23T00:53:13Z")
Here is the thing Let's say I have an index foo with 5 primary shards with 1 replica. Now if the replicas are not assigned, the active\_shards\_percent will be 50%. But since all the primaries are there, we basically have all the data hence the yield is 100% [yield = available available / total data] Now let's say there was one primary missing, then the active\_shard\_percent would be around 90-99%. Even in this case the yield should be 100%. Basically I wouldnt want to consider replicas for calculating the yield With 0 replica yes we can directly use the active\_shards\_percent value. active\_primary\_shard\_percentage = available primaries / total primaries So whenever a cluster is RED, we want to tell our clients how much of data is available. If we display active\_shards\_percent, then when no replicas are assigned, it will show 50% but that's not the case afterall [all the primaries will still provide you all the data you need] @warkolm ---
**Author:** ![warkolm](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/warkolm/32/39224_2.png) [@warkolm](https://discuss.elastic.co/u/warkolm)\ **Post date:** [March 23, 2018, 1:01am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285/4 "2018-03-23T01:01:21Z")
Ok that makes sense. I can't think of anything off the top of my head, but let me think about it. Someone else might also have an idea. ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [April 20, 2018, 1:01am UTC](https://discuss.elastic.co/t/elastic-to-provide-active-primary-shards-percent-metric/125285/5 "2018-04-20T01:01:35Z")
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