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https://issues.apache.org/jira/browse/SOLR-10642?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16132150#comment-16132150
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Uwe Schindler edited comment on SOLR-10642 at 8/18/17 1:05 PM:
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Hi,
I think, I found the problem:
- In {{FacetFieldProcessor#findTopSlots}} it calculates the {{effectiveLimit}}
and also the {{off}} (effective offset), which is then used during merging.
- It sets the offset explicitely to "0", if it is a shard request
- On the other hand, it does not raise the effective limit by the same value.
I attached a patch. All tests still pass. But I have to write a new test, that
tries to reproduce this bug.
was (Author: thetaphi):
Hi,
I think, I found the problem:
- In {{FacetFieldProcessor#findTopSlots}} it calculates the {{effectiveLimit}}
and also the {{off}} (effective offset), which is then used during merging.
- It sets the offset explicitely to "0", if it is a shard request
- On the other hand, it does not raise the effective limit by the same value.
I attached a patch. All tests still pass. But I vae to write a new test, that
tries to reproduce this bug.
> Facet offset not returning enough results with solr cloud
> ---------------------------------------------------------
>
> Key: SOLR-10642
> URL: https://issues.apache.org/jira/browse/SOLR-10642
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: 6.4.1
> Reporter: Sascha Markus
> Attachments: SOLR-10642-6x.patch
>
>
> A collection has four shards.
> A field has >5K terms according to the web ui for one core of the collection.
> A json facet query with limit 20 and offset 0 returns 20 buckets as expected.
> The same query with an offset of 20 returns only seven more buckets.
> With debugQuery= true I see that the first query with offset = 0 the four
> cores return 27 different vals which are merged. The top 20 are collected for
> the result.
> With offset=20 I see the same 27 vals for the cores. But now the first 20 are
> skipped and seven are returned.
> And with offset=40 the same is returned as for offset=20.
> Example:
> http://mysolrserver/solr/my_collection/select?wt=json&indent=false&q=*&rows=0&json.facet={"my_facet"%3A+{"field"%3A+"some_field"%2C+"limit"%3A+20%2C+"offset"%3A+20%2C+"sort"%3A+"count+desc"%2C+"type"%3A+"field"}}
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