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Posted to issues@lucene.apache.org by "Michael Gibney (Jira)" <ji...@apache.org> on 2020/05/11 19:22:00 UTC
[jira] [Comment Edited] (SOLR-14471) base replica selection
strategy not applied to "last place" shards.preference matches
[ https://issues.apache.org/jira/browse/SOLR-14471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17104776#comment-17104776 ]
Michael Gibney edited comment on SOLR-14471 at 5/11/20, 7:21 PM:
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Fix (and test illustrating the problem) at [PR #1507|https://github.com/apache/lucene-solr/pull/1507]
was (Author: mgibney):
Fix (and test illustrating the problem) at [PR #blah|https://github.com/apache/lucene-solr/pull/1507]
> base replica selection strategy not applied to "last place" shards.preference matches
> -------------------------------------------------------------------------------------
>
> Key: SOLR-14471
> URL: https://issues.apache.org/jira/browse/SOLR-14471
> Project: Solr
> Issue Type: Bug
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Affects Versions: master (9.0), 8.3
> Reporter: Michael Gibney
> Priority: Minor
>
> When {{shards.preferences}} is specified, all inherently equivalent groups of replicas should fall back to being sorted by the {{replica.base}} strategy (either random or some variant of "stable"). This currently works for every group of "equivalent" replicas, with the exception of "last place" matches.
> This is easy to overlook, because usually it's the "first place" matches that will be selected for the purpose of actually executing distributed requests; but it's still a bug, and is especially problematic when "last place matches" == "first place matches" – e.g. when {{shards.preference}} specified matches _all_ available replicas.
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