Atri Sharma created LUCENE-8675:
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Summary: Divide Segment Search Amongst Multiple Threads
Key: LUCENE-8675
URL: https://issues.apache.org/jira/browse/LUCENE-8675
Project: Lucene - Core
Issue Type: Improvement
Components: core/search
Reporter: Atri Sharma
Segment search is a single threaded operation today, which can be a bottleneck
for large analytical queries which index a lot of data and have complex queries
which touch multiple segments (imagine a composite query with range query and
filters on top). This ticket is for discussing the idea of splitting a single
segment into multiple threads based on mutually exclusive document ID ranges.
This will be a two phase effort, the first phase targeting queries returning
all matching documents (collectors not terminating early). The second phase
patch will introduce staged execution and will build on top of this patch.
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