# Nullpointerexception on has\_child query

**URL:** <https://discuss.elastic.co/t/nullpointerexception-on-has-child-query/32977>\
**Category:** Elasticsearch\
**Created:** [October 26, 2015, 10:58am UTC](https://discuss.elastic.co/t/nullpointerexception-on-has-child-query/32977 "2015-10-26T10:58:26Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![markusahlstrand](https://avatars.discourse-cdn.com/v4/letter/m/ecccb3/32.png) [@markusahlstrand](https://discuss.elastic.co/u/markusahlstrand)\
**Post date:** [October 26, 2015, 10:58am UTC](https://discuss.elastic.co/t/nullpointerexception-on-has-child-query/32977/1 "2015-10-26T10:58:26Z")

</div>

We running this query and get the error below even though both documents exists and are stored in the same shard. Any idea on why this doesn't work?

```auto
GET an-alias/a-type/_search
{
"query": {
   "has_child": {
        "type": "xxx",
        "query": {
            "term": {
                "id": "123456"
            }
        }
    }
},
 "fields": [
    "id"
 ]
}

```

````auto
{
   "error": "SearchPhaseExecutionException[Failed to execute phase [query], all shards failed; shardFailures {[xxx][an-alias][0]: RemoteTransportException[[instance-0000000015][inet[/xxx.xxx.xxx.xxx:19081]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[an-alias][0]: query[filtered(child_filter[acast/channel](filtered(id:123456)->cache(_type:acast)))->cache(+_type:channel +org.elasticsearch.index.search.nested.NonNestedDocsFilter@2c2a7c93)],from[0],size[10]: Query Failed [Failed to execute main query]]; nested: RuntimeException[java.lang.NullPointerException]; nested: NullPointerException; }{[UpUal0ttSG2Vcn_GKRDM4g][an-alias][1]: RemoteTransportException[[instance-0000000013][inet[/xxx.xxx.xxx.xxx:xxxx]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[an-alias[1]: query[filtered(child_filter[acast/channel](filtered(id:123456)->cache(_type:acast)))->cache(+_type:channel +org.elasticsearch.index.search.nested.NonNestedDocsFilter@a1bb26e0)],from[0],size[10]: Query Failed [Failed to execute main query]]; nested: RuntimeException[java.lang.NullPointerException]; nested: NullPointerException; }{[UpUal0ttSG2Vcn_GKRDM4g][an-alias][2]: RemoteTransportException[[instance-0000000013][inet[/xxx.xxx.xxx.xxx:xxxxx]][indices:data/read/search[phase/query]]]; nested: QueryPhaseExecutionException[[an-alias6][2]: query[filtered(child_filter[acast/channel](filtered(id:123456)->cache(_type:acast)))->cache(+_type:channel +org.elasticsearch.index.search.nested.NonNestedDocsFilter@a1bb26e0)],from[0],size[10]: Query Failed [Failed to execute main query]]; nested: RuntimeException[java.lang.NullPointerException]; nested: NullPointerException; }]",
   "status": 500
}
```

It works just fine with the same dataset on other clusters with the same version of elasticsearch.

Kind regards,
Markus
````

---

<div class="post-metadata">

**Author:** ![javanna](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/javanna/32/4698_2.png) [@javanna](https://discuss.elastic.co/u/javanna)\
**Post date:** [October 28, 2015, 8:44am UTC](https://discuss.elastic.co/t/nullpointerexception-on-has-child-query/32977/2 "2015-10-28T08:44:01Z")

</div>

Hi Markus,  
could you please post a complete recreation that includes your mappings and documents?

Thanks  
Luca

---

<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:** [July 5, 2017, 11:42pm UTC](https://discuss.elastic.co/t/nullpointerexception-on-has-child-query/32977/3 "2017-07-05T23:42:11Z")

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