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https://issues.apache.org/jira/browse/CALCITE-780?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697458#comment-14697458
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Nick Dimiduk commented on CALCITE-780:
--------------------------------------

What [~lukaslalinsky] said -- I'm all for simple things like having a query 
exposed via url, but for all the years i've putzed with HTML, i actually have 
no idea how to build an anchor tag that includes a header. Maybe you're 
thinking of the request parameters passed in the [query 
string|https://en.wikipedia.org/wiki/Query_string]? This is not the same as 
request headers.

> HTTP error 413 when sending a long string to the Avatica server
> ---------------------------------------------------------------
>
>                 Key: CALCITE-780
>                 URL: https://issues.apache.org/jira/browse/CALCITE-780
>             Project: Calcite
>          Issue Type: Bug
>          Components: avatica
>            Reporter: Lukas Lalinsky
>            Assignee: Julian Hyde
>             Fix For: 1.4.0-incubating
>
>
> When I try to execute a query with a very long string, the server returns 
> error 413 "entity too large". My assumption is that this happens, because the 
> RPC uses a HTTP header to pass the RPC request data and most HTTP parsers do 
> not like long headers. The best solution would be to use the body of the HTTP 
> request. It could be made backward-compatible, by checking the header first 
> and if it's missing, then read the body.



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