[SOLR-12692] Add hints/warnings for the ZK Status Admin UI

• Type: Improvement
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Admin UI
• Assignee: Unassigned
• Reporter: Varun Thacker
• Created: 23/Aug/18 02:25
• Updated: 08/Jun/19 14:58

Description

Firstly I love the new UI pages ( ZK Status and Nodes ) . Thanks janhoy for all the great work!

I setup a 3 node ZK ensemble to play around with the UI and attaching the screenshot for reference.

 

Here are a few suggestions I had

1. Let’s show Approximate Size in human readable form.  We can use RamUsageEstimator#humanReadableUnits to calculate it
2. Show warning symbol when Ensemble is standalone
3. If maxSessionTimeout < Solr's ZK_CLIENT_TIMEOUT then ZK will only honor up-to the maxSessionTimeout value for the Solr->ZK connection. We could mark that as a warning.
4. If maxClientCnxns < live_nodes show this as a red? Each solr node connects to all zk nodes so if the number of nodes in the cluster is high one should also be increasing maxClientCnxns

 

Issue Links

• is related to: SOLR-8207 Add "Nodes" view to the Admin UI "Cloud" tab