# Metricbeat breaks with Mapping Exception Error

**URL:** <https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118>\
**Category:** Beats\
**Tags:** metricbeat\
**Created:** [March 20, 2019, 10:43am UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118 "2019-03-20T10:43:28Z")\
**Posts on this page:** 5\
**Page:** 1

<div class="post-metadata">

**Author:** ![paul1243](https://avatars.discourse-cdn.com/v4/letter/p/e99b99/32.png) [@paul1243](https://discuss.elastic.co/u/paul1243)\
**Post date:** [March 20, 2019, 10:43am UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118/1 "2019-03-20T10:43:28Z")

</div>

Hi-  
I hit the below error, when I run the windows metricset:

```auto
Failed to connect to backoff(elasticsearch(http://172.20.23.100:9200)): Connection marked as failed because the onConnect callback failed: Error loading Elasticsearch template: could not load template. Elasticsearch returned: couldn't load template: couldn't load json. Error: 400 Bad Request: {"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"No handler for type [alias] declared on field [hostname]"}],"type":"mapper_parsing_exception","reason":"Failed to parse mapping [_default_]: No handler for type [alias] declared on field [hostname]","caused_by":{"type":"mapper_parsing_exception","reason":"No handler for type [alias] declared on field [hostname]"}},"status":400}

```

Here is the yml config:

```auto
metricbeat.config.modules:
  path: ${path.config}/modules.d/*.yml
  reload.enabled: false

#==================== Elasticsearch template setting ==========================
setup.template.settings:
  index.number_of_shards: 1
  index.codec: best_compression
#================================ Outputs =====================================
output.elasticsearch:
  hosts: ["172.20.23.100:9200"]

```

Could someone please let me know what could be the issue. Thanks !

---

<div class="post-metadata">

**Author:** ![pmercado](https://avatars.discourse-cdn.com/v4/letter/p/59ef9b/32.png) [@pmercado](https://discuss.elastic.co/u/pmercado)\
**Post date:** [March 20, 2019, 2:16pm UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118/2 "2019-03-20T14:16:01Z")

</div>

Hi @paul1243 ,

can you check ElasticSearch version, and make sure the Alias field for the index is supported?  
[https://www.elastic.co/guide/en/elasticsearch/reference/current/alias.html](https://www.elastic.co/guide/en/elasticsearch/reference/current/alias.html)

---

<div class="post-metadata">

**Author:** ![paul1243](https://avatars.discourse-cdn.com/v4/letter/p/e99b99/32.png) [@paul1243](https://discuss.elastic.co/u/paul1243)\
**Post date:** [March 21, 2019, 8:17am UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118/3 "2019-03-21T08:17:24Z")

</div>

Hi @pmercado  
I use elasticsearch version 6.2, yes, it supports the Alias field.  
I just tried adding the below line in the metribeats.yml and ran the beats again

```auto
index.mapping.single_type: true

```

but, this time its a different error:

```auto
WARN	elasticsearch/client.go:531	Cannot index event publisher.Event{Content:beat.Event{Timestamp:time.Time{wall:0xbf1cf9811a6b0020, ext:2196858201, loc:(*time.Location)(0x2b83b20)}, Meta:common.MapStr(nil), Fields:common.MapStr{"agent":common.MapStr{"hostname":"win7prox68", "type":"metricbeat", "version":"7.0.0"}, "ecs":common.MapStr{"version":"1.0.0-beta2"}, "event":common.MapStr{"dataset":"windows.perfmon", "duration":5000300, "module":"windows"}, "host":common.MapStr{"name":"win7prox68"}, "metricset":common.MapStr{"name":"perfmon"}, "service":common.MapStr{"type":"windows"}, "windows":common.MapStr{"perfmon":common.MapStr{"process":common.MapStr{"handle":common.MapStr{"count":73}}, "process_handle_count":"csrss#2"}}}, Private:interface {}(nil)}, Flags:0x0} (status=400): {"type":"illegal_argument_exception","reason":"Rejecting mapping update to [test_counters-2019.03.21] as the final mapping would have more than 1 type: [_doc, doc]"}

```

---

<div class="post-metadata">

**Author:** ![paul1243](https://avatars.discourse-cdn.com/v4/letter/p/e99b99/32.png) [@paul1243](https://discuss.elastic.co/u/paul1243)\
**Post date:** [March 25, 2019, 3:28pm UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118/4 "2019-03-25T15:28:28Z")

</div>

@pmercado-  
Any help on my issue ? Thanks !

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<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [April 22, 2019, 3:28pm UTC](https://discuss.elastic.co/t/metricbeat-breaks-with-mapping-exception-error/173118/5 "2019-04-22T15:28:34Z")

</div>

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