[SOLR-12208] Don't use "INDEX.sizeInBytes" as a tag name in policy calculations

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.5, 8.0
• Component/s: AutoScaling
• Assignee: Andrzej Bialecki
• Reporter: Andrzej Bialecki
• Created: 10/Apr/18 09:48
• Updated: 08/Jun/19 15:10
• Resolved: 01/Aug/18 17:49

Description

CORE_IDX and FREEDISK ConditionType reuse this metric name, but they assume the values are expressed in gigabytes. This alone is confusing considering the name of the metric.

Additionally, it causes conflicts in the simulation framework that would require substantial changes to resolve (ReplicaInfo-s in SimClusterStateProvider keep metric values in their variables, expressed in original units - but then the Policy assumes it can put the values expressed in GB under the same key... hilarity ensues).

Issue Links

• is related to: SOLR-9735 Umbrella JIRA for Auto Scaling and Cluster Management in SolrCloud