Andreas Hubold created SOLR-15468:
-------------------------------------
Summary: 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
Security Level: Public (Default Security Level. Issues are Public)
Components: update
Affects Versions: 8.8
Reporter: Andreas Hubold
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. 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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