# Writing map reduce with painless with scripted metric aggregation

**URL:** https://discuss.elastic.co/t/writing-map-reduce-with-painless-with-scripted-metric-aggregation/83098
**Category:** Elasticsearch
**Created:** [April 20, 2017, 5:44pm UTC](https://discuss.elastic.co/t/writing-map-reduce-with-painless-with-scripted-metric-aggregation/83098 "2017-04-20T17:44:16Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![ajay78](https://avatars.discourse-cdn.com/v4/letter/a/c37758/32.png) [@ajay78](https://discuss.elastic.co/u/ajay78)
#### Post date: [April 20, 2017, 5:44pm UTC](https://discuss.elastic.co/t/writing-map-reduce-with-painless-with-scripted-metric-aggregation/83098/1 "2017-04-20T17:44:16Z")

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i have written a painless script for map reduce. can someone share examples for aggregation on nested documents or parent child.

Thanks

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### Author: ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)
#### Post date: [May 18, 2017, 5:52pm UTC](https://discuss.elastic.co/t/writing-map-reduce-with-painless-with-scripted-metric-aggregation/83098/2 "2017-05-18T17:52:44Z")

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