[LUCENE-4210] SOlr TestJmxIntegration#testJmxOnCoreReload bug related to TestHarness

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 3.4, 3.5, 3.6
• Labels: CoreContainer CoreReload JMX patch
• Lucene Fields: New, Patch Available
• Assignee: Unassigned
• Reporter: Emanuele Lombardi
• Created: 11/Jul/12 10:08
• Updated: 28/Aug/22 13:21
• Resolved: 11/Jul/12 10:22

Description

Using zabbix to monitor my Solr instance I noticed that after core reloading the Mbeans have disappeared. There is a test -> testJmxIntegration#testJmxOnCoreReload used to check Mbeans presence after core reload. The test is wrong because TestHarness sets core name to null on creating the core for the first time (CoreContainer#initialize) so his Mbeans have jmxRootName="solr" (JmxMonitoredMap#line61). Once the core is created it sets coreName = "" causing new Mbeans to have jmxRootName="solr/"
So after first core closing only MBeans having name "solr" are removed and only MBeans with name "solr/" persists on JMXServer. This test is fake.

Step to reproduce test fail
1) Apply TestHarness patch
2) Run the tests