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Posted to dev@lucene.apache.org by "David Smiley (JIRA)" <ji...@apache.org> on 2017/10/22 02:06:00 UTC

[jira] [Commented] (SOLR-11517) ToParentBlockJoinQuery fails when the parents/child fall in to different segments

    [ https://issues.apache.org/jira/browse/SOLR-11517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16214151#comment-16214151 ] 

David Smiley commented on SOLR-11517:
-------------------------------------

By "document updates" do you mean typical document replacement or do you mean updatable numeric docValues?  If the former then you must take care to update the entire parent/child set together.  If the latter... I doubt that's supported with block-join (parent-child) [~ichattopadhyaya] do you know?

> ToParentBlockJoinQuery fails when the parents/child fall in to different segments
> ---------------------------------------------------------------------------------
>
>                 Key: SOLR-11517
>                 URL: https://issues.apache.org/jira/browse/SOLR-11517
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>    Affects Versions: 6.6.1
>            Reporter: ananthesh
>
> We have a system where all the documents in the collections are nested child documents. We also have 'autoCommit' enabled for the collection. We also get huge number of document updates. We found a scenario, where 'child' documents were indexed in one segment, while 'parent' document got indexed in the other segment. Here are the docid looks like
> 0 = 95638
> 1 = 95639
> 2 = 95640
> 3 = 272190 \{parent}
> Now if the solr request has been made using "parent" query parser like the following
> {noformat}
> {!parent which=parent:true score=max}(...)
> {noformat}
> ToParentBlockJoinQuery which handles the request wont be able to find the parent for the searched child documents. But if we trigger `optimize` for the same index which forces to merge all the segments to single index, the above request will be able to fetch the results. 



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