SOLR-8546: TestLazyCores is failing a lot on the Jenkins cluster.

solr/CHANGES.txt

@@ -82,6 +82,8 @@ Bug Fixes
 * SOLR-9234: srcField parameter works only when all fields are captured in the /update/json/docs
   endpoint (noble)
 
+* SOLR-8546: SOLR-8546: TestLazyCores is failing a lot on the Jenkins cluster. (Erick Erickson)
+
 Optimizations
 ----------------------
 

solr/core/src/test/org/apache/solr/core/TestLazyCores.java

@@ -668,7 +668,9 @@ public class TestLazyCores extends SolrTestCaseJ4 {
 
   @Test
   public void testMidUseUnload() throws Exception {
-    final int maximumSleepMillis = random().nextInt(10000); // sleep for up to 10 s
+    final int maximumSleepMillis = random().nextInt(9999) + 1; // sleep for up to 10 s Must add 1 because using
+                                                               // this as a seed will rea few lines down will
+                                                               // throw an exception if this is zero
     if (VERBOSE) {
       System.out.println("TestLazyCores.testMidUseUnload maximumSleepMillis="+maximumSleepMillis);
     }