# Mapping a nested field in Hive table properties

**URL:** <https://discuss.elastic.co/t/mapping-a-nested-field-in-hive-table-properties/61121>\
**Category:** Elasticsearch\
**Tags:** es-hadoop\
**Created:** [September 21, 2016, 11:57am UTC](https://discuss.elastic.co/t/mapping-a-nested-field-in-hive-table-properties/61121 "2016-09-21T11:57:23Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![gowthamsadasivam](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/gowthamsadasivam/32/9043_2.png) [@gowthamsadasivam](https://discuss.elastic.co/u/gowthamsadasivam)\
**Post date:** [September 21, 2016, 11:57am UTC](https://discuss.elastic.co/t/mapping-a-nested-field-in-hive-table-properties/61121/1 "2016-09-21T11:57:23Z")

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Hello,

I'm pushing my documents in HDFS to ElasticSearch using Hive, (ES-Hadoop connector). My HDFS has documents in the following structure,

```
{
    "app":{
        "id":"5320614578",
        "name":"WhatsApp"
    },
    "clientid":"XXXXXX-888E-XXXXXXX-F7E1XXXX900RTY",
    "anotherid":"14378452369947",
    "istdt":"2016-09-21 00:10:34",
    "anothervalue":{
        "goo":"This is a string",
        "foo":"Foo foo FoO FOo FOO"
    },
    "cize":"72E90v",
    "devid":"C7E1R7X1R0G5b"
}

```

I would like to map the field "[app.name](http://app.name)" to a new field "application" using Hive table properties. The documentation page here ([https://www.elastic.co/guide/en/elasticsearch/hadoop/current/hive.html#hive-alias](https://www.elastic.co/guide/en/elasticsearch/hadoop/current/hive.html#hive-alias)) shows mapping a simple field, But I couldn't find a way to map a nested field like "app" shown in the above document structure. I tried the following methods but none of them worked.

```
TBLPROPERTIES (
    'es.nodes'='xx.xxx.xxx.xx',
    'es.mapping.names' = 'date:@timestamp, app.name:application',
    'es.batch.write.retry.count' = '-1',
    'es.batch.size.bytes' = '10mb',
    'es.batch.size.entries' = '10000',
    'es.resource'='{logname}-{date:YYYY.MM.dd}/{logtype}'
);

```

^ In the above syntax I tried to map the field "**[app.name](http://app.name)**" to a new field " **application**". But this doesn't work.

```
TBLPROPERTIES (
    'es.nodes'='xx.xxx.xxx.xx',
    'es.mapping.names' = 'date:@timestamp, app[name]:application',
    'es.batch.write.retry.count' = '-1',
    'es.batch.size.bytes' = '10mb',
    'es.batch.size.entries' = '10000',
    'es.resource'='{logname}-{date:YYYY.MM.dd}/{logtype}'
);

```

^ In the above syntax I tried to map the field "**app[name]**" to the new field " **application**" using Hive's way of specifying nested fields with "[]" square brackets, But this never works too.

This being said, the simple mapping from the field " **date**" to " **@timestamp**" works well, but not the field "[app.name](http://app.name)" or any nested field for that case.

I would like to know, is there a way/syntax that I can map/access the nested values to a new field in Hive.

Thanks in advance.

---

<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 6, 2017, 1:23pm UTC](https://discuss.elastic.co/t/mapping-a-nested-field-in-hive-table-properties/61121/2 "2017-07-06T13:23:10Z")

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