Mikhail Khludnev created SOLR-18651:
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Summary: warmup another collection via OtherSenderListener
Key: SOLR-18651
URL: https://issues.apache.org/jira/browse/SOLR-18651
Project: Solr
Issue Type: Improvement
Components: query
Reporter: Mikhail Khludnev
Assignee: Mikhail Khludnev
One of the weakest part of SOLR-18307 is concurrent cold hit.
When we have new segment in from side, and to-side got a cold hit, it loads FK
columns in from-side. But we load as many such columns as many concurrent
queries (to-side) run.
The proposal is to introduce QuerySendListener extension, which warms to-side
on from-side commit. It's worth to cover there cases:
# ancient Solr - specify core name
# single shard from-collection, sharded to-collection
# many-many shards collocated collections SOLR-16837
AffinityPlacementFactory.withCollectionShards
bookmarking first slop [https://github.com/mkhludnev/solr/pull/34] not ready
for looking into
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