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https://issues.apache.org/jira/browse/SOLR-11191?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17404723#comment-17404723
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Tomas Eduardo Fernandez Lobbe edited comment on SOLR-11191 at 8/25/21, 9:08 PM:
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Was looking at this today and It does seem like ensuring {{\_root_}} is used as
router field (or other router that guarantees nested docs to fall in the same
shard) should be enough for this to work completely, or am I missing something?
was (Author: tomasflobbe):
Was looking at this today and It does seem like ensuring {{_root_}} is used as
router field (or other router that guarantees nested docs to fall in the same
shard) should be enough for this to work completely, or am I missing something?
> Shard Split doesn't work on indexes that have nested 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
>
> 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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