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https://issues.apache.org/jira/browse/SOLR-12630?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16572689#comment-16572689
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mosh commented on SOLR-12630:
-----------------------------
{quote} Perhaps you mean to convey this idea: it'd be nice if the query method
could work consistently using either "block" style doc addition or standalone
docs (+ metadata to express relationships). Internally somehow it should
detect which mechanism is most efficient (use BlockJoin if possible). This
sounds hard; I'm not sure if this is even what you mean though. {quote}
This is actually exactly what I was going for, except perhaps we could let the
user decide, or even have this set in the schema. Perhaps if the user has
nested updates, this well be a lot more performant then indexing the whole
block. Perhaps using the nested update URP we could add the needed metadata
field(_ROOT_, _nest_path, _nest_parent) and index the doc in the same shard as
the other children.
Would a nested field in schema with a type of block or shard make this simpler?
We could use the field type to determine which query or atomic update ought to
be used in each scenario.
Again, just a thought.
> Query children without using block join
> ---------------------------------------
>
> Key: SOLR-12630
> URL: https://issues.apache.org/jira/browse/SOLR-12630
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Reporter: mosh
> Priority: Major
>
> Currently work is being put into Solr to support nested document hierarchies,
> keeping the original relation between parent and child docs
> ([SOLR-12298|https://issues.apache.org/jira/browse/SOLR-12298],
> [SOLR-12441|https://issues.apache.org/jira/browse/SOLR-12441]). Currently the
> only way to query child documents is using BlockJoin. I was thinking perhaps
> we could introduce a way to query documents that are not indexed in the same
> block with a different transformer, or perhaps add this feature to the
> ChildDocTransformer.
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