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https://issues.apache.org/jira/browse/SOLR-3076?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13737454#comment-13737454
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Robert Muir commented on SOLR-3076:
-----------------------------------
{quote}
Once again, what about going ahead with small configuration footprint, without
diverging join queries.
{quote}
I am +1 to that setup, like the original patches on this issue (especially for
block joins, its typically only ONE filter anyway: and one that must support
some "special" stuff like prevSetBit or whatever at the moment compared to
general filters). So even long term, maybe a separate cache makes sense because
e.g. you want to use compressed implementations for your 'ordinary' filters.
{quote}
Broken Solr on segments seems crucial to me too.
I suppose that refactoring will take even much time than this modest piece of
functionality.
{quote}
I'm willing to volunteer a significant amount of my time (e.g. like, starting
right now) to make it happen. As it stands now its very difficult for users to
use solr's features if their index is changing rapidly: lots of garbage and
slow reopens. But right or wrong, i always felt restrained from fixing this,
for some of the same reasons Uwe mentions...
> Solr(Cloud) should support block joins
> --------------------------------------
>
> Key: SOLR-3076
> URL: https://issues.apache.org/jira/browse/SOLR-3076
> Project: Solr
> Issue Type: New Feature
> Reporter: Grant Ingersoll
> Fix For: 4.5, 5.0
>
> Attachments: 27M-singlesegment-histogram.png, 27M-singlesegment.png,
> bjq-vs-filters-backward-disi.patch, bjq-vs-filters-illegal-state.patch,
> child-bjqparser.patch, dih-3076.patch, dih-config.xml,
> parent-bjq-qparser.patch, parent-bjq-qparser.patch, Screen Shot 2012-07-17 at
> 1.12.11 AM.png, SOLR-3076-childDocs.patch, SOLR-3076.patch, SOLR-3076.patch,
> SOLR-3076.patch, SOLR-3076.patch, SOLR-3076.patch, SOLR-3076.patch,
> SOLR-3076.patch, SOLR-3076.patch, SOLR-3076.patch, SOLR-3076.patch,
> SOLR-3076.patch, SOLR-3076.patch, SOLR-3076.patch,
> SOLR-7036-childDocs-solr-fork-trunk-patched,
> solrconf-bjq-erschema-snippet.xml, solrconfig.xml.patch,
> tochild-bjq-filtered-search-fix.patch
>
>
> Lucene has the ability to do block joins, we should add it to Solr.
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