[DRILL-6289] Cluster view should show more relevant information

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.13.0
• Fix Version/s: 1.14.0
• Component/s: Web Server
• Labels: ready-to-commit
• Assignee: Kunal Khatua
• Reporter: Kunal Khatua
• Reviewer: Arina Ielchiieva
• Created: 23/Mar/18 04:43
• Updated: 04/Jun/18 18:53
• Resolved: 23/Apr/18 17:10

Description

When fixing DRILL-6224, I noticed that the same information can be very useful to have in the cluster view shown on a Drillbit's homepage.

The proposal is to show the following:

1. Heap Memory in use
2. Direct Memory (actively) in use - Since we're not able to get the total memory held by Netty at the moment, but only what is currently allocated to running queries
3. Process CPU
4. Average (System) Load Factor

Information such as the port numbers don't help much during general cluster health, so it might be worth removing this information if more real-estate is needed.

Issue Links

• depends upon: DRILL-5261 Expose REST endpoint in zookeeper
• is related to: DRILL-4276 Need a way to check on status of drillbits
• is required by: DRILL-5821 In the Drill web UI, display configured direct, heap memory
• relates to: DRILL-6224 The metrics' page has gauges reset to near zero values and does not seem to update
• requires: DRILL-4276 Need a way to check on status of drillbits
• requires: DRILL-6279 Web UI should indicate when operators have spilled in-memory data to disk
• links to: GitHub Pull Request #1203