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https://issues.apache.org/jira/browse/SOLR-10339?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Shalin Shekhar Mangar resolved SOLR-10339.
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Resolution: Fixed
Committed to features/autoscaling branch.
> Implement set-trigger and remove-trigger APIs
> ---------------------------------------------
>
> Key: SOLR-10339
> URL: https://issues.apache.org/jira/browse/SOLR-10339
> Project: Solr
> Issue Type: Sub-task
> Security Level: Public(Default Security Level. Issues are Public)
> Components: SolrCloud
> Reporter: Shalin Shekhar Mangar
> Assignee: Shalin Shekhar Mangar
> Labels: autoscaling
> Fix For: master (7.0)
>
> Attachments: SOLR-10339.patch, SOLR-10339.patch
>
>
> Implement set-trigger and remove-trigger API to add, update and remove
> triggers for autoscaling.
> The following events are supported:
> # nodeAdded
> # nodeLost
> # replicaLost
> # schedule
> # searchRate
> # indexRate
> Each trigger has the following properties:
> # ‘name’ - a unique string to identify the trigger so that it can be read,
> updated or removed later
> # ‘state’ - the state of the event (ENABLED or DISABLED), default is ENABLED.
> This allows one to add a trigger which is disabled until a RESUME_TRIGGER API
> is called.
> # ‘actions’ - a list of actions to be performed in the order specified. The
> default list of actions for every trigger are to compute the plan, execute
> the plan and save the plan. If an empty list of actions is explicitly
> specified or null is specified when creating/updating the trigger then no
> actions are performed at all.
> Here's an example of an API invocation:
> {code}
> {
> "set-trigger" : {
> "name" : "node_lost_trigger",
> "event" : "nodeLost",
> "waitFor" : "10m",
> "state" : "ENABLED",
> "actions" : [
> {
> "name" : "compute_plan",
> "class" : "solr.ComputePlanAction"
> },
> {
> "name" : "execute_plan",
> "class" : "solr.ExecutePlanAction"
> },
> {
> "name" : "log_plan",
> "class" : "solr.LogPlanAction",
> "collection" : ".system"
> }
> ]
> }
> }
> {code}
> Note this issue is only about implementation of the user-facing APIs and not
> the actual trigger mechanism itself.
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