Adding Elasticsearch connector. Please check and suggest improvements.

[sumanth232]

I have written a basic connector using scan and scroll on the basis of Example-http connector.
It reads the schema and the table names from the elasticsearch-metadata.json through http.

The columns of a table are dynamically listed on the fly based on the sources of the table provided in the elasticsearch-metadata.json file. The columns are obtained from the mapping of the index/type provided in the source

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[chinaworld]

hi! sumanth232
Could you write a brief document for elasticsearch connector? I'm now testing the connector. Thank you!

[albertocsm]

+1

[albertocsm]

having a good look at this one. haven't gone all the way yet but it looks a reasonable starting point.
the schema retrieval based on the "elasticsearch-metadata.json" is not clear to me.
@sumanth232, can u plz clarify which ES endpoint are u refering to?

or is this "elasticsearch-metadata.json" supposed to be assembled manually?

[mateilucianstefan]

Hi all!
@sumanth232 are you still developing this?
@cberner did you start work on another implementation?

[albertocsm]

i've made a few changes and fixes over @sumanth232 work and currently have a working experimental version of the plugin on https://github.com/albertocsm/presto (master)
any input would be appreciated

[cberner]

I haven't no. Unfortunately, it doesn't look like I'm going to have time to work on one in the near future

[mateilucianstefan]

Thanks guys for the quick replies.
@albertocsm looks like we've taken the same path:) I will take a look at your repo soon and let you know.

[chinaworld]

https://github.com/albertocsm/presto/tree/master/presto-elasticsearch

[cberner]

@sumanth232 looks like you're not working on this anymore. If you still are please re-open! If someone else has finished an ES connector please open a separate PR.

[rohanarora0921]

@albertocsm I was going through your version of this on : https://github.com/albertocsm/presto and was wondering:

1. If you could provide a basic example of DDL to create something in ElasticSearch using this connector through Presto.
2. If you could explain the mapping between Presto Mapping->Java API for ES (QueryBuilder).

Would really appreciate your help!

[albertocsm]

What are you trying to accomplish?
What is the current status? Are you having trouble configuring the connector?

It's probably best if you open an issue in my fork.

[linqer]

hi albertocsm:
could you tell me what is the right "metadata-uri" of ES connector?

[albertocsm]

Hi. Check albertocsm#30

…

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