Alan Woodward created SOLR-9566: ----------------------------------- Summary: Can we avoid doing recovery when collections are first created? Key: SOLR-9566 URL: https://issues.apache.org/jira/browse/SOLR-9566 Project: Solr Issue Type: Improvement Security Level: Public (Default Security Level. Issues are Public) Reporter: Alan Woodward
When a core starts up as part of a collection, and it's not a shard leader, it goes into recovery, part of which involves a 7 second wait (set in SOLR-7141) to ensure that updates being sent from the leader don't get missed in between buffering and replication. This has the unfortunate side-effect of adding a 7-second pause to collection creation whenever the replication factor is 2 or more, which slows down tests massively - for example, DeleteReplicaTest takes about 54 seconds to execute on my machine, 28 seconds of which is just pauses - over 50% of execution time. It's not actually possible to add documents to a collection before the creation request has returned, so the recovery stage here isn't strictly speaking necessary. I think we could try adding a parameter to a CoreAdmin create request that says the core is being created as part of a new collection, so it doesn't need to try and recover from it's leader when it starts up. Does this sound sensible, or am I missing something here? -- This message was sent by Atlassian JIRA (v6.3.4#6332) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org