[SOLR-3616] Solr TestJmxIntegration#testJmxOnCoreReload bug related to TestHarness

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Component/s: multicore
• Labels: CoreReload JMX
• Assignee: Unassigned
• Reporter: Emanuele Lombardi
• Created: 11/Jul/12 10:21
• Updated: 31/Jul/13 19:33
• Resolved: 31/Jul/13 19:33

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

Issue Links

• is related to: SOLR-5095 SolrCore.infoRegistry needs overhauled with some form of "namespacing"
• is related to: SOLR-3615 JMX Mbeans disappear on core reload
• is related to: SOLR-5094 TestJmxIntegration makes no sense