[SOLR-9484] The modify collection API should wait for the modified properties to show up in the cluster state

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 6.2
• Fix Version/s: 6.3, 7.0
• Component/s: SolrCloud
• Labels: difficulty-easy impact-medium
• Assignee: Cao Manh Dat
• Reporter: Shalin Shekhar Mangar
• Created: 06/Sep/16 19:07
• Updated: 02/Oct/19 17:24
• Resolved: 15/Sep/16 05:36

Description

The modify collection API doesn't wait for the updated properties to show up in the cluster state. Say you increase the maxShardsPerNode for a collection using this API, if you try to add a replica immediately after modify collection API returns then the overseer sometimes doesn't see the updated property and refuses to add a new replica.