[jira] [Updated] (SOLR-15540) changes in internal usage of _root_ field cause failures to deleteById or duplicate docs when updating after upgrading from Solr7 to Solr8

["Chris M. Hostetter (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-15540?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Chris M. Hostetter updated SOLR-15540:
--------------------------------------
    Summary: changes in internal usage of _root_ field cause failures to deleteById or duplicate docs when updating after upgrading from Solr7 to Solr8  (was: Duplicated adding document for update when Solr7 upgrade to Solr8)

> changes in internal usage of _root_ field cause failures to deleteById or duplicate docs when updating after upgrading from Solr7 to Solr8
> ------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: SOLR-15540
>                 URL: https://issues.apache.org/jira/browse/SOLR-15540
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: update, UpdateRequestProcessors
>    Affects Versions: 8.8.2
>         Environment: SolrCloud Solr 8.8.2
>            Reporter: samuel ma
>            Priority: Major
>
> We upgrade Solr7.7.2 to Solr8.8.2, keep using the Solr 7 index data, the query operation is fine. But when we try to add the doc (with the same doc id, actually is an update operation) to Solr8, we actually see 2 doc with the same id, which means the update did not remove the Solr7 doc.
> Below is the schema.xml configuration for Solr7.
> {code:java}
> <field name="id" type="string" indexed="true" stored="true" required="true" multiValued="false" />
> <uniqueKey>id</uniqueKey>
> <field name="_root_" type="string" indexed="true" stored="false"/>
> {code}
>  
> Add some fields in Solr8
> <field name="_nest_path_" type="_nest_path_" stored="true"/>
> <fieldType name="_nest_path_" class="solr.NestPathField" />
>  
> I can see in Sol7 code
> {code:java}
> DirectUpdateHandler2.updateDocOrDocValues{code}
> use the idTerm as updateTerm, but in this case Solr8 use rootTerm as the updateTerm. is this an expected behavior? how do we handle this incompatible issue? 
>  
> Add comment:
> This also impacts deletebyId  
>  



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