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https://issues.apache.org/jira/browse/SOLR-17221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17834127#comment-17834127
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David Smiley commented on SOLR-17221:
-------------------------------------
Yeah that's a bug! PR welcome.
> Http2SolrClient merges case sensitive solr params
> -------------------------------------------------
>
> Key: SOLR-17221
> URL: https://issues.apache.org/jira/browse/SOLR-17221
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrJ
> Affects Versions: 9.5.0
> Reporter: Yue Yu
> Priority: Major
>
> In solr9.5.0/solrj9.5.0, the multi-shard requests are sent through
> Http2SolrClient, and this function composes the actual Jetty Request object:
> {code:java}
> private Request fillContentStream(
> Request req,
> Collection<ContentStream> streams,
> ModifiableSolrParams wparams,
> boolean isMultipart)
> throws IOException {
> if (isMultipart) {
> // multipart/form-data
> try (MultiPartRequestContent content = new MultiPartRequestContent()) {
> Iterator<String> iter = wparams.getParameterNamesIterator();
> while (iter.hasNext()) {
> String key = iter.next();
> String[] vals = wparams.getParams(key);
> if (vals != null) {
> for (String val : vals) {
> content.addFieldPart(key, new StringRequestContent(val), null);
> }
> }
> }
> if (streams != null) {
> for (ContentStream contentStream : streams) {
> String contentType = contentStream.getContentType();
> if (contentType == null) {
> contentType = "multipart/form-data"; // default
> }
> String name = contentStream.getName();
> if (name == null) {
> name = "";
> }
> HttpFields.Mutable fields = HttpFields.build(1);
> fields.add(HttpHeader.CONTENT_TYPE, contentType);
> content.addFilePart(
> name,
> contentStream.getName(),
> new InputStreamRequestContent(contentStream.getStream()),
> fields);
> }
> }
> req.body(content);
> }
> } else {
> // application/x-www-form-urlencoded
> Fields fields = new Fields();
> Iterator<String> iter = wparams.getParameterNamesIterator();
> while (iter.hasNext()) {
> String key = iter.next();
> String[] vals = wparams.getParams(key);
> if (vals != null) {
> for (String val : vals) {
> fields.add(key, val);
> }
> }
> }
> req.body(new FormRequestContent(fields, FALLBACK_CHARSET));
> }
> return req;
> } {code}
> The problem is the use of this class *Fields fields = new Fields();* where
> caseSensitive=false by default, this leads to case sensitive solr params
> being merged together. For example f.case_sensitive_field.facet.limit=5 &
> f.CASE_SENSITIVE_FIELD.facet.limit=99
> Not sure if this is intentional for some reason?
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