[SOLR-13831] Support defining arbitrary autoscaling simulation scenarios

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 8.4
• Assignee: Andrzej Bialecki
• Reporter: Andrzej Bialecki
• Created: 09/Oct/19 13:12
• Updated: 21/Jan/20 16:58
• Resolved: 23/Oct/19 20:02

Description

In many cases where the bin/solr autoscaling tool is used it would be very useful to be able to specify a concrete scenario to play out, eg:

• load a snapshot (or create a simulated cluster of N nodes)
• calculate suggestions
• apply suggestions
• kill one or more nodes
• loop N times
• make some arbitrary SolrRequest-s
• save snapshot
• etc...

 

This could be expressed as a very simple DSL that can be loaded from a text file, with the following format:

# comments
// or comments
create_cluster numNodes=5 // inline comment
solr_request /admin/collections?action=CREATE&name=testCollection&numShards=2&replicationFactor=2
loop_start iterations=10
  calculate_suggestions
  apply_suggestions
loop_end
save_snapshot path=/foo