# Wrong analyser used when indexing dynamic property

**URL:** https://discuss.elastic.co/t/wrong-analyser-used-when-indexing-dynamic-property/13208
**Category:** Elasticsearch
**Created:** [August 13, 2013, 10:12pm UTC](https://discuss.elastic.co/t/wrong-analyser-used-when-indexing-dynamic-property/13208 "2013-08-13T22:12:24Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![paulmclellan\_00](https://avatars.discourse-cdn.com/v4/letter/p/58f4c7/32.png) [@paulmclellan\_00](https://discuss.elastic.co/u/paulmclellan_00)
#### Post date: [August 13, 2013, 10:12pm UTC](https://discuss.elastic.co/t/wrong-analyser-used-when-indexing-dynamic-property/13208/1 "2013-08-13T22:12:24Z")

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Hi,

I'm seeing some unusual behaviour when indexing documents in Elasticsearch  
and am hoping someone here might be able to help me solve the problem. So...

I have a unit test that's failing intermittently. The flow of the test is  
as follows:

1. Initiailise in-memory Elasticsearch cluster (one local node, no  
replicas)
2. Create new index
3. Create new type mapping
4. Index some documents
5. Refresh index and wait for all documents to be processed
6. Query Elasticsearch for documents

The type mapping I'm using includes the following dynamic template  
definition:

```
{
    "participants": {
        "path_match": "participants.*",
        "mapping": {
            "type": "string",
            "store": "yes",
            "index": "analyzed",
            "analyzer": "whitespace"
        }
    }
}

```

This template is intended to produce fields of the form:

```
participants.new = ['user1@some.domain.com', 'user2@some.domain.com']
participants.removed = ['user3@some.domain.com']

```

The problem I have is that occasionally (perhaps once in every ten runs)  
the test will fail because step 6 does not return all the expected  
documents. When I check the indexed terms for the missing documents I see  
that the 'participants' field has been split into separate tokens on the  
'@' character. This seems to suggest that the default analyzer is being  
used for indexing instead of the whitespace one.

So far I haven't been able to detect any pattern to the failures. The  
unexpected tokenisation only affects a portion of the indexed documents and  
can occur at any point in the indexing process (i.e. it isn't always the  
first or last document that has problems).

Let me know if I can provide any additional information to help diagnose  
this issue. Any help you can provide will be much appreciated as I'm not  
sure what to try next.

Cheers,  
Paul

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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: [July 6, 2017, 2:21am UTC](https://discuss.elastic.co/t/wrong-analyser-used-when-indexing-dynamic-property/13208/2 "2017-07-06T02:21:15Z")

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