# Why was the "tokenizer" parameter to the synonymTokenFilter and synonymGraphTokenFilter deprecated with ES 6.x?

**URL:** <https://discuss.elastic.co/t/why-was-the-tokenizer-parameter-to-the-synonymtokenfilter-and-synonymgraphtokenfilter-deprecated-with-es-6-x/143763>\
**Category:** Elasticsearch\
**Created:** [August 9, 2018, 8:01pm UTC](https://discuss.elastic.co/t/why-was-the-tokenizer-parameter-to-the-synonymtokenfilter-and-synonymgraphtokenfilter-deprecated-with-es-6-x/143763 "2018-08-09T20:01:58Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Elizabeth\_Haubert](https://sea2.discourse-cdn.com/elastic/user_avatar/discuss.elastic.co/elizabeth_haubert/32/34355_2.png) [@Elizabeth\_Haubert](https://discuss.elastic.co/u/Elizabeth_Haubert)\
**Post date:** [August 9, 2018, 8:01pm UTC](https://discuss.elastic.co/t/why-was-the-tokenizer-parameter-to-the-synonymtokenfilter-and-synonymgraphtokenfilter-deprecated-with-es-6-x/143763/1 "2018-08-09T20:01:58Z")

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Per:  
[The Elastic Documentation](https://www.elastic.co/guide/en/elasticsearch/reference/6.0/analysis-synonym-graph-tokenfilter.html) the "tokenizer" parameter is officially deprecated, but from a functionality perspective, it seems to have been completely removed as the parameter is ignored in new indices.

This is a pretty drastic change. For the normal case, that saves a lot of pre-processing on the synonyms file that most people probably weren't doing. However, manipulating punctuation has been a historical work-around to assorted problems that pop up with phrasing, and there are plugins that depend on this behavior.

I'm not asking about new workarounds to a specific problem, just curious about the reasoning behind disabling the functionality entirely, rather than changing the default behavior.

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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:** [September 6, 2018, 8:02pm UTC](https://discuss.elastic.co/t/why-was-the-tokenizer-parameter-to-the-synonymtokenfilter-and-synonymgraphtokenfilter-deprecated-with-es-6-x/143763/2 "2018-09-06T20:02:04Z")

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Closed on September 6, 2018, 8:02pm UTC

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