Headers for the Java REST Client

Elastic Stack Elasticsearch
1

I understand that in elasticsearch 6 the content type header is mandatory. I get a nice exception when omitting it when connecting using the low level rest client.

{"error":"Content-Type header [text/plain; charset=ISO-8859-1] is not supported","status":406}

Is there a good reason not to include it by default? I know I can do this myself when creating the client using the default headers, but I would like to understand why this is not the default out of the box as almost all request will need it

Thanks

2

as almost all request will need it

Sometimes if you want to use something like _bulk you are probably going to use another content-type than application/json. That's probably why.
Some people also want to provide yaml instead of json.

Note that the High Level client hides all that "complexity".

3

Ah good point, did not thing about those two usecases. Thanks.

I know about the high level client, I use it in projects already. I also like to use the low level client with a custom wrapper sometimes.

4

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