apache / apache/lucene

Support joining in a distributed environment. [LUCENE-3759]

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legacy-jira-priority:Major module:join type:enhancement
Dominant language
Java
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Description

Add two more methods in JoinUtil to support joining in a distributed manner.
- Method to retrieve all from values.
- Method to create a TermsQuery based on a set of from terms.

With these two methods distributed joining can be supported following these steps:
1. Retrieve from values from each shard
1. Merge the retrieved from values.
1. Create a TermsQuery based on the merged from terms and send this query to all shards.

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Migrated from [LUCENE-3759](https://issues.apache.org/jira/browse/LUCENE-3759) by Martijn van Groningen (@martijnvg), 22 votes, updated Aug 07 2018

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