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https://issues.apache.org/jira/browse/SOLR-15468?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mayya Sharipova updated SOLR-15468:
-----------------------------------
Security: (was: Public)
> Regression: Adding _root_ schema field to existing index causes atomic update
> failures
> --------------------------------------------------------------------------------------
>
> Key: SOLR-15468
> URL: https://issues.apache.org/jira/browse/SOLR-15468
> Project: Solr
> Issue Type: Bug
> Components: update
> Affects Versions: 8.8
> Reporter: Andreas Hubold
> Priority: Major
> Labels: regression
>
> In previous Solr releases (8.6.3) it was possible to add the \_root\_ field
> to the schema of an existing index, e.g to add functionality relying on child
> documents without reindexing all documents.
> This does not work anymore with Solr 8.8.2, because SOLR-14923 added a check
> in RealTimeGetComponent#getInputDocument that the root field contains the
> expected value. IIUC, the check does not only fail for wrong values, but also
> if the root field does not contain any value yet, as it's the case for
> documents that were added before the field was added to the schema.
> The check causes atomic/partial updates to fail:
> {noformat}
> Caused by: org.apache.solr.common.SolrException: Attempted an
> atomic/partial update to a child doc without indicating the _root_ somehow.
> at
> org.apache.solr.handler.component.RealTimeGetComponent.getInputDocument(RealTimeGetComponent.java:746)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.getUpdatedDocument(DistributedUpdateProcessor.java:689)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.doVersionAdd(DistributedUpdateProcessor.java:373)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.lambda$versionAdd$0(DistributedUpdateProcessor.java:336)
> at
> org.apache.solr.update.VersionBucket.runWithLock(VersionBucket.java:50)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.versionAdd(DistributedUpdateProcessor.java:336)
> at
> org.apache.solr.update.processor.DistributedUpdateProcessor.processAdd(DistributedUpdateProcessor.java:222)
> at
> org.apache.solr.update.processor.UpdateRequestProcessor.processAdd(UpdateRequestProcessor.java:55)
> {noformat}
>
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