[jira] [Created] (SOLR-12755) Force merge (optimize) should respect distrib=false

["Daniel Lowe (JIRA)" <ji...@apache.org>]

Daniel Lowe created SOLR-12755:
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             Summary: Force merge (optimize) should respect distrib=false
                 Key: SOLR-12755
                 URL: https://issues.apache.org/jira/browse/SOLR-12755
             Project: Solr
          Issue Type: Improvement
      Security Level: Public (Default Security Level. Issues are Public)
          Components: SolrCloud, update
    Affects Versions: 7.4
            Reporter: Daniel Lowe


It would be desirable in a Solr Cloud configuration if a request like:

update?optimize=true&distrib=false

only executed on the shard that received the request.

 

As is well known force merging is a very expensive/disk space hungry operation and hence this increased control should address the following issues:

Free disk space requirements: 1-2x size of ALL shards on the machine vs 1-2x size of largest shard

I/O: High disk contention when a machine holds multiple shards as all shards are being simultaneously rewritten

Availability: All replicas will simultaneously have impaired performance

 

Relevant previous issue: SOLR-6264



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