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Fix for defect SOLR-18186: Solr heap used percentage uses committed heap instead of max heap which raises false alarm #4257

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Merged
epugh merged 3 commits into from
Apr 6, 2026
+12 −3
Merged

Fix for defect SOLR-18186: Solr heap used percentage uses committed heap instead of max heap which raises false alarm #4257

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2e59e23
Fix display for heap used percentage in cloud.html
raviranjanjha Apr 1, 2026
a1932fb
Fix cloud.js to compute proper heap usage percentage
raviranjanjha Apr 1, 2026
c35c937
Changelog for defect SOLR-18186
raviranjanjha Apr 1, 2026
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7 changes: 7 additions & 0 deletions changelog/unreleased/SOLR-18186-fix-heap-used-percent-adminui.yml
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Original file line number Diff line number Diff line change
@@ -0,0 +1,7 @@
title: Fixed Admin UI to use max heap (-Xmx) value instead of committed heap to compute heap used percentage.
type: fixed # added, changed, fixed, deprecated, removed, dependency_update, security, other
authors:
- name: Ravi Ranjan Jha
links:
- name: SOLR-18186
url: https://issues.apache.org/jira/browse/SOLR-18186
4 changes: 3 additions & 1 deletion solr/webapp/web/js/angular/controllers/cloud.js
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Expand Up @@ -367,12 +367,14 @@ var nodesSubController = function($scope, Collections, System, Metrics, MetricsE
nodes[node]['memFree'] = bytesToSize(memFree);
nodes[node]['memUsed'] = bytesToSize(memTotal - memFree);

var heapMax = s.jvm.memory.raw.max;
var heapTotal = s.jvm.memory.raw.total;
var heapFree = s.jvm.memory.raw.free;
var heapPercentage = Math.floor((heapTotal - heapFree) / heapTotal * 100);
var heapPercentage = Math.floor((heapTotal - heapFree) / heapMax * 100);
nodes[node]['heapUsed'] = bytesToSize(heapTotal - heapFree);
nodes[node]['heapUsedPct'] = heapPercentage;
nodes[node]['heapUsedPctStyle'] = styleForPct(heapPercentage);
nodes[node]['heapMax'] = bytesToSize(heapMax);
nodes[node]['heapTotal'] = bytesToSize(heapTotal);
nodes[node]['heapFree'] = bytesToSize(heapFree);

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4 changes: 2 additions & 2 deletions solr/webapp/web/partials/cloud.html
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Expand Up @@ -192,11 +192,11 @@
</div>
</td>
<td ng-class="{'dead-node': n.dead}">
<div class="node-heap" title="total: {{n.heapTotal}} free: {{n.heapFree}} used%: {{n.heapUsedPct}}%" ng-show="!n.dead">
<div class="node-heap" title="max: {{n.heapMax}} total: {{n.heapTotal}} free: {{n.heapFree}} used%: {{n.heapUsedPct}}%" ng-show="!n.dead">
<span class="{{n.heapUsedPctStyle}}">{{n.heapUsedPct}}%</span>
</div>
<div class="node-spec" ng-show="showDetails[key] && !n.dead">
Max: {{n.heapTotal}}<br/>
Max: {{n.heapMax}}<br/>
Used: {{n.heapUsed}}
</div>
</td>
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