Allow for definition of pathPrefix for ElasticSearch rest client
Open
elasticsearch
improvement
io
java
P3
- Dominant language
- Java
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Description
When using ElasticSearchIO, need the ability to specify the pathPrefix for the ElasticSearch Rest Client. ElasticSearch may not always be running at the `/` root path, for example, if it is deployed behind a proxy it may be at [http://host/path/to/index](http://host/path/to/index) - currently it is not possible to connect to that instance because there isn't a way to configure the `/path/to/index` on the ElasticSearch Rest Client in ElasticSearchIO
Imported from Jira [BEAM-10525](https://issues.apache.org/jira/browse/BEAM-10525). Original Jira may contain additional context.
Reported by: mjhugo.
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