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https://issues.apache.org/jira/browse/SOLR-11191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17894058#comment-17894058
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ASF subversion and git services commented on SOLR-11191:
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Commit fbcf6b3ecb2d20d584fbf6d7290974f9b41c191f in solr's branch
refs/heads/branch_9x from Zack Kendall
[ https://gitbox.apache.org/repos/asf?p=solr.git;h=fbcf6b3ecb2 ]
SOLR-11191: SolrIndexSplitter: Routing child docs by _root_ when available
(#2799)
Splitting shards now supports child / nested docs. Works based on splitting
based on the _root_ field.
Co-authored-by: zkendall <[email protected]>
(cherry picked from commit e377ebbdaff5ae784b3f4e4315afa4d6705d1d71)
> Shard Split doesn't work on indexes that have child documents
> -------------------------------------------------------------
>
> Key: SOLR-11191
> URL: https://issues.apache.org/jira/browse/SOLR-11191
> Project: Solr
> Issue Type: Bug
> Reporter: Varun Thacker
> Assignee: David Smiley
> Priority: Major
> Labels: NestedDocuments, pull-request-available
> Time Spent: 7h 10m
> Remaining Estimate: 0h
>
> The split shard command doesn't split a shard correctly when the index has
> parent-child documents.
> The way split shard works is it goes through all documents id's in that shard
> and then decides which sub-shard would it belong in . It is not aware of the
> parent child relationship during this process
> So the parent-child documents could be orphaned and end up in different shard
> Secondly, even with the routing of parent and child documents were the same
> split shards needs to re-index them as a block
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