[SOLR-11151] SolrInfoMBeanHandler.getDiff() ADD case non-functional: NPE when a bean value goes from null -> non-null

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0, 7.1, 8.0
• Assignee: Steven Rowe
• Reporter: Steven Rowe
• Created: 26/Jul/17 15:28
• Updated: 08/Jun/19 15:21
• Resolved: 26/Jul/17 16:22

Description

MBeansHandler.testDiff() has been failing regularly on Jenkins, e.g. https://jenkins.thetaphi.de/job/Lucene-Solr-master-Linux/20192/:

   [junit4]   2> NOTE: reproduce with: ant test  -Dtestcase=MBeansHandlerTest -Dtests.method=testDiff -Dtests.seed=CD7B1EB232DD9490 -Dtests.multiplier=3 -Dtests.slow=true -Dtests.locale=es-PA -Dtests.timezone=Asia/Phnom_Penh -Dtests.asserts=true -Dtests.file.encoding=ISO-8859-1
   [junit4] ERROR   0.02s J0 | MBeansHandlerTest.testDiff <<<
   [junit4]    > Throwable #1: java.lang.NullPointerException
   [junit4]    > 	at __randomizedtesting.SeedInfo.seed([CD7B1EB232DD9490:86DDA29226BACF0]:0)
   [junit4]    > 	at org.apache.solr.handler.admin.SolrInfoMBeanHandler.diffObject(SolrInfoMBeanHandler.java:240)
   [junit4]    > 	at org.apache.solr.handler.admin.SolrInfoMBeanHandler.diffNamedList(SolrInfoMBeanHandler.java:219)
   [junit4]    > 	at org.apache.solr.handler.admin.SolrInfoMBeanHandler.getDiff(SolrInfoMBeanHandler.java:187)
   [junit4]    > 	at org.apache.solr.handler.admin.SolrInfoMBeanHandler.handleRequestBody(SolrInfoMBeanHandler.java:87)
   [junit4]    > 	at org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:177)
   [junit4]    > 	at org.apache.solr.core.SolrCore.execute(SolrCore.java:2473)
   [junit4]    > 	at org.apache.solr.util.TestHarness.query(TestHarness.java:337)
   [junit4]    > 	at org.apache.solr.util.TestHarness.query(TestHarness.java:319)
   [junit4]    > 	at org.apache.solr.handler.admin.MBeansHandlerTest.testDiff(MBeansHandlerTest.java:57)
   [junit4]    > 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   [junit4]    > 	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
   [junit4]    > 	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
   [junit4]    > 	at java.base/java.lang.reflect.Method.invoke(Method.java:564)
   [junit4]    > 	at java.base/java.lang.Thread.run(Thread.java:844)