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https://issues.apache.org/jira/browse/SOLR-6369?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14095732#comment-14095732
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Yonik Seeley commented on SOLR-6369:
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It does bring up an question of why the key was repeated though.
This doesn't seem to happen for "normal" request handlers... is it something
specific to the ping request handler?
example:
http://localhost:8983/solr/query?q=*:*&fq=inStock:true&fq=popularity:10&echoParams=all
{code}
{
"responseHeader":{
"status":0,
"QTime":1,
"params":{
"echoParams":"all",
"df":"text",
"indent":"true",
"wt":"json",
"fq":["inStock:true",
"popularity:10"],
"q":"*:*"}},
"response":{"numFound":0,"start":0,"docs":[]
}}
{code}
Actually, I can't duplicate the double "echoParams" with the /admin/ping
handler either...
> duplicate json key "echoParams" should be removed in ping-response
> ------------------------------------------------------------------
>
> Key: SOLR-6369
> URL: https://issues.apache.org/jira/browse/SOLR-6369
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.9
> Environment: testing on ubuntu 14.04
> version: 4.9.0 1604085 - rmuir - 2014-06-20 06:34:03
> Reporter: Marc Portier
> Priority: Trivial
>
> Apparently the /admin/ping handler will duplicate the echoParams key in the
> json-response.
> $ curl -s http://localhost:8983/solr/test-node-client/admin/ping?wt=json
> {"responseHeader":{"status":0,"QTime":2,"params":{"df":"text","echoParams":"all","rows":"10","echoParams":"all","wt":"json","q":"solrpingquery","distrib":"false"}},"status":"OK"}
> Having "echoParams":"all" twice in that response doesn't really make sense?
> Strictly speaking this is allowed in the json spec, so it is not a violation
> in principle
> http://stackoverflow.com/questions/21832701/does-json-syntax-allow-duplicate-keys-in-an-object
> However there are some json-parse implementations out there that want to map
> this into hashtables and are not silently overwriting the key with the last
> seen value, but are throwing errors in the process.
> To those a cleanup of the json response would make life somewhat easier.
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