allow 3 retries for failing tests (#6324)

* allow 1 retry for failing tests idk if this is a good idea, but false failure rate due to flaky tests seems pretty bad lately

* try to fix retry issue with teardown

* Update pom.xml

* Update pom.xml

api/src/test/java/org/apache/druid/data/input/impl/prefetch/PrefetchableTextFilesFirehoseFactoryTest.java

@@ -125,6 +125,7 @@ public class PrefetchableTextFilesFirehoseFactoryTest
     for (File dir : FIREHOSE_TMP_DIRS) {
       FileUtils.forceDelete(dir);
     }
+    FIREHOSE_TMP_DIRS.clear(); // cleanup after ourselves (resolve issue with retries)
   }
 
   private static void assertResult(List<Row> rows)

pom.xml

@@ -92,6 +92,9 @@
         <repoOrgId>org-apache-id</repoOrgId>
         <repoOrgName>org-apache-name</repoOrgName>
         <repoOrgUrl>https://repository.apache.org/content/repositories/public/</repoOrgUrl>
+
+        <!-- Allow the handful of flaky tests with transient failures to pass. -->
+        <surefire.rerunFailingTestsCount>3</surefire.rerunFailingTestsCount>
     </properties>
 
     <modules>