[jira] [Updated] (SOLR-10480) Offset does not allow for full pagination in JSON Facet API

["Yonik Seeley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-10480?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Yonik Seeley updated SOLR-10480:
--------------------------------
    Attachment: SOLR-10480.patch

OK, found and patched the issue.

As an aside, paging with an offset with distributed faceting has the same issue as distributed search.  To return buckets N-N+10, each shard returns 0-N+10, the merger sorts the merged bucket list, and then finally N-N+10 is returned to the client.

> Offset does not allow for full pagination in JSON Facet API
> -----------------------------------------------------------
>
>                 Key: SOLR-10480
>                 URL: https://issues.apache.org/jira/browse/SOLR-10480
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: Facet Module, SolrCloud
>    Affects Versions: 6.4.1
>            Reporter: Maxime Darçot
>            Assignee: Yonik Seeley
>         Attachments: SOLR-10480.patch
>
>
> I have a SolrCloud cluster and when I use the JSON facet API to do term faceting like this:
> bq. json.facet={"results":{"type": "terms", "field": "my_field", "limit": 100, "offset": 100, "numBuckets": true}}
> it does work correctly. 
> However the _numBuckets_ tells me in return that I have more than 6 millions buckets but as soon as I start to grow the _offset_ value to browse these buckets, it doesn't return anything anymore (when I reach an offset of around 300).
> What is even weirder is that if I put a bigger _limit_, like 10'000, I can increase the _offset_ until around 29'000 before it doesn't return anything.
> And the returned _numBuckets_ doesn't change all the while.
> It is a big problem because we can't paginate till the end of the buckets.
> Might be related to SOLR-7452, I don't know...



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