Spaceman1984 commented on a change in pull request #4428:
URL: https://github.com/apache/cloudstack/pull/4428#discussion_r512657093
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File path:
engine/storage/src/main/java/org/apache/cloudstack/storage/endpoint/DefaultEndPointSelector.java
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@@ -128,9 +131,15 @@ protected EndPoint findEndPointInScope(Scope scope, String
sqlBase, Long poolId)
}
}
+ List<Long> dedicatedHosts = dedicatedResourceDao.listAllHosts();
+
// TODO: order by rand() is slow if there are lot of hosts
sbuilder.append(") t where t.value<>'true' or t.value is null");
//Added for exclude cluster's subquery
- sbuilder.append(" ORDER by rand() limit 1");
+ sbuilder.append(" ORDER by ");
+ for (Long hostId: dedicatedHosts){ // put dedicated hosts at the end
of the result set
+ sbuilder.append("field(t.id, '" + hostId +"')," );
+ }
+ sbuilder.append(" rand() limit 1");
Review comment:
The limit is only applied after the ordering and the dedicated hosts are
not part of the randomization.
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