[jira] [Resolved] (SOLR-11026) Policy can suggest more operations than necessary

["Noble Paul (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/SOLR-11026?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Noble Paul resolved SOLR-11026.
-------------------------------
    Resolution: Fixed

> Policy can suggest more operations than necessary
> -------------------------------------------------
>
>                 Key: SOLR-11026
>                 URL: https://issues.apache.org/jira/browse/SOLR-11026
>             Project: Solr
>          Issue Type: Sub-task
>      Security Level: Public(Default Security Level. Issues are Public) 
>          Components: AutoScaling, SolrCloud
>            Reporter: Shalin Shekhar Mangar
>            Assignee: Noble Paul
>              Labels: autoscaling
>             Fix For: master (8.0), 7.1
>
>
> To reproduce:
> {code}
> ./bin/solr -e cloud -noprompt
> {code}
> Add policy and preferences:
> {code}
> { 'set-cluster-policy': [      {'cores':'<10', 'node':'#ANY'},      {'replica':'<2', 'shard': '#EACH', 'node': '#ANY'},      {'nodeRole':'overseer', 'replica':0}    ],
> 'set-cluster-preferences': [{'minimize': 'cores'}]
> }
> {code}
> Add a trigger:
> {code}
> {
> 	'set-trigger': {
> 		'name' : 'node_added_trigger',
> 		'event' : 'nodeAdded',
> 		'waitFor' : '1s'
> 	}
> }
> {code}
> Shutdown a node (so only 1 is live)
> {code}
> ./bin/solr stop -p 7574
> {code}
> Add a collection with 2 shards, 1 replica
> {code}
> http://localhost:8983/solr/admin/collections?action=create&name=test&replicationFactor=1&numShards=2&maxShardsPerNode=2&wt=json
> {code}
> The diagnostic output at this point is:
> {code}
> {
>     "responseHeader": {
>         "status": 0,
>         "QTime": 23
>     },
>     "diagnostics": {
>         "sortedNodes": [
>             {
>                 "node": "127.0.1.1:8983_solr",
>                 "cores": 2
>             }
>         ],
>         "violations": []
>     },
>     "WARNING": "This response format is experimental.  It is likely to change in the future."
> }
> {code}
> Start the other node that we had shutdown earlier:
> {code}
> "bin/solr" start -cloud -p 7574 -s "example/cloud/node2/solr" -z localhost:9983
> {code}
> The trigger kicks in but both cores are moved to the new node. Diagnostics output at steady state:
> {code}
> {
>     "responseHeader": {
>         "status": 0,
>         "QTime": 23
>     },
>     "diagnostics": {
>         "sortedNodes": [
>             {
>                 "node": "127.0.1.1:7574_solr",
>                 "cores": 2
>             },
>             {
>                 "node": "127.0.1.1:8983_solr",
>                 "cores": 0
>             }
>         ],
>         "violations": []
>     },
>     "WARNING": "This response format is experimental.  It is likely to change in the future."
> }
> {code}



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