[jira] [Resolved] (SOLR-13159) Autoscaling not distributing collection evenly

["Andrzej Bialecki (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-13159?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andrzej Bialecki  resolved SOLR-13159.
--------------------------------------
    Fix Version/s: 8.3
       Resolution: Fixed

Added a note to the RefGuide. Thanks Gus for investigating this!

> Autoscaling not distributing collection evenly
> ----------------------------------------------
>
>                 Key: SOLR-13159
>                 URL: https://issues.apache.org/jira/browse/SOLR-13159
>             Project: Solr
>          Issue Type: Bug
>          Components: AutoScaling
>    Affects Versions: 8.0
>            Reporter: Gus Heck
>            Assignee: Andrzej Bialecki 
>            Priority: Major
>             Fix For: 8.3
>
>         Attachments: SOLR-13159.patch, autoscaling.json, clstat.json
>
>
> I recently ran into a very strange behavior described in detail in the mail linked at the bottom of this description. In short: 
>  # Default settings didn't distribute nodes evenly on brand new 50 node cluster
>  # Can't seem to write rules producing suggestions to distribute them evenly 
>  # Suggestions are made that then fail despite quiet cluster, no changes.
> Also of note was diagnostic output containing this seemingly impossible result with 2 cores counted and no replicas listed:
> {code:java}
>             {
>                 "node": "solr-2.customer.redacted.com:8983_solr",
>                 "isLive": true,
>                 "cores": 2,
>                 "freedisk": 140.03918838500977,
>                 "totaldisk": 147.5209503173828,
>                 "replicas": {}
>             },{code}
> I will attach anonymized cluster status output and autoscaling.json shortly 
> This issue may be related to SOLR-13142
> http://mail-archives.apache.org/mod_mbox/lucene-dev/201901.mbox/%3CCAEUNc48HRZA7qo-uKtJQEtZnO9VG9OErQZGzoOmCTBe7C9zvNw%40mail.gmail.com%3E
>  



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