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https://issues.apache.org/jira/browse/SOLR-18508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18125757#comment-18125757
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Mikhail Khludnev commented on SOLR-18508:
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For the reference: with 2G heap 10M products/100M skus, 4 concurrent queries
can't bootstrap cold index. Concurrent queries load the same FK columns and
crash OOM. It can start (write joinindex from scranch) in 1 thread, so in such
case you need a warmup listener.
> {!auxIndexJoin} - skip the column if to-doc falls outside the min..max range
> ----------------------------------------------------------------------------
>
> Key: SOLR-18508
> URL: https://issues.apache.org/jira/browse/SOLR-18508
> Project: Solr
> Issue Type: Improvement
> Components: query
> Reporter: Mikhail Khludnev
> Assignee: Mikhail Khludnev
> Priority: Major
> Labels: pull-request-available
> Fix For: 10.1
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> When lazy iterator checks an approx doc for the match, it loops join-index
> columns.
> All these columns corresponds to the same "to" segment and all "from"
> segments.
> Every column has min..max "to" docNums range (aka {{toEdges[0]..toEdges[1]}}).
> Obviously, if it checks a to-doc outside of the range, we can skip this
> column, and then even drop it if to-doc > max_to_doc.
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