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From "Noble Paul (JIRA)" <>
Subject [jira] [Commented] (SOLR-11714) AddReplicaSuggester endless loop
Date Thu, 04 Jan 2018 22:26:00 GMT


Noble Paul commented on SOLR-11714:

this is the preferences and there is no policy specified. This means an infinite no:of replicas
can be added without breaking any rules. 

the test must add an explicit policy limiting the no:of replicas per node AND the ComputeAction
must check for something more than just relying on the policy framework to return a {{null}}

> AddReplicaSuggester endless loop
> --------------------------------
>                 Key: SOLR-11714
>                 URL:
>             Project: Solr
>          Issue Type: Bug
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: AutoScaling
>    Affects Versions: 7.2, master (8.0)
>            Reporter: Andrzej Bialecki 
>            Assignee: Noble Paul
>         Attachments: 7.2-disable-search-rate-trigger.diff, SOLR-11714.diff
> {{SearchRateTrigger}} events are processed by {{ComputePlanAction}} and depending on
the condition either a MoveReplicaSuggester or AddReplicaSuggester is selected.
> When {{AddReplicaSuggester}} is selected there's currently a bug in master, due to an
API change (Hint.COLL_SHARD should be used instead of Hint.COLL). However, after fixing that
bug {{ComputePlanAction}} goes into an endless loop because the suggester endlessly keeps
creating new operations.
> Please see the patch that fixes the Hint.COLL_SHARD issue and modifies the unit test
to illustrate this failure.

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