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https://issues.apache.org/jira/browse/LUCENE-9302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17073156#comment-17073156
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Adrien Grand commented on LUCENE-9302:
--------------------------------------
The in-progress patch looks good. I'm not familiar with how things work in Solr
when the client and server are on different versions or when not all nodes of
the cluster are on the same version, does the code need to be able to handle
the case when the hit count is still returned as an integer by another node?
> Integer overflow in total count in grouping results
> ---------------------------------------------------
>
> Key: LUCENE-9302
> URL: https://issues.apache.org/jira/browse/LUCENE-9302
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Ian
> Assignee: Ishan Chattopadhyaya
> Priority: Minor
> Attachments: SOLR-13004.patch, SOLR-13004.patch
>
>
> When doing a Grouping search in solr cloud you can get a negative number for
> the total found.
> This is caused by the accumulated total being held in an integer and not a
> long.
>
> example result:
> {{{ "responseHeader": { "status": 0, "QTime": 9231, "params": { "q":
> "decade:200", "indent": "true", "fl": "decade", "wt": "json", "group.field":
> "decade", "group": "true", "_": "1542773674247" } }, "grouped": { "decade": {
> "matches": -629516788, "groups": [ { "groupValue": "200", "doclist": {
> "numFound": -629516788, "start": 0, "maxScore": 1.9315376, "docs": [ {
> "decade": "200" } ] } } ] } } }}}
>
> {{result without grouping:}}
> {{{ "responseHeader": { "status": 0, "QTime": 1063, "params": { "q":
> "decade:200", "indent": "true", "fl": "decade", "wt": "json", "_":
> "1542773791855" } }, "response": { "numFound": 3665450508, "start": 0,
> "maxScore": 1.9315376, "docs": [ { "decade": "200" }, { "decade": "200" }, {
> "decade": "200" }, { "decade": "200" }, { "decade": "200" }, { "decade":
> "200" }, { "decade": "200" }, { "decade": "200" }, { "decade": "200" }, {
> "decade": "200" } ] } }}}
>
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