SONAR-12686 enforce index rebuilding by changing ES data directory

server/sonar-docs/src/pages/faq.md

@@ -20,7 +20,7 @@ This can be automated by using the corresponding Web API: `api/projects/bulk_del
 Currently, the only way to force a reindex is to:
 
 * Stop your server
-* Remove the contents of the $SQ_HOME/data/es6 directory
+* Remove the contents of the $SQ_HOME/data/es7 directory
 * Start your server
 
 Before doing this, you should be aware first that processes are in place on the SonarQube side that out-of-sync indices are detected and corrected, and second that a full re-index can be quite lengthy depending on the size of your instance.

server/sonar-docs/src/pages/setup/troubleshooting.md

@@ -59,13 +59,13 @@ If you still have inconsistencies, you'll need to rebuild the indices (this oper
 **non-DCE:**  
 
 1. Stop SonarQube  
-1. Delete the data/es6 directory  
+1. Delete the data/es7 directory  
 1. Restart SonarQube  
 
 **DCE:**  
 
 1. Stop the whole cluster (ES and application nodes)  
-1. Delete the data/es6 directory on each ES node  
+1. Delete the data/es7 directory on each ES node  
 1. Restart the whole cluster  
     
 **Note:** See [Configure & Operate a Cluster](/setup/operate-cluster/) for information on stopping and starting a cluster.

server/sonar-main/src/main/java/org/sonar/application/es/EsInstallation.java

@@ -20,11 +20,12 @@
 package org.sonar.application.es;
 
 import java.io.File;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.List;
 import java.util.Properties;
+import java.util.stream.Stream;
 import org.sonar.application.command.EsJvmOptions;
+import org.sonar.core.util.stream.MoreCollectors;
 import org.sonar.process.Props;
 
 import static org.sonar.process.ProcessProperties.Property.PATH_DATA;
@@ -65,12 +66,14 @@ public class EsInstallation {
 
   private static List<File> buildOutdatedSearchDirs(Props props) {
     String dataPath = props.nonNullValue(PATH_DATA.getKey());
-    return Arrays.asList(new File(dataPath, "es"), new File(dataPath, "es5"));
+    return Stream.of("es", "es5", "es6")
+      .map(t -> new File(dataPath, t))
+      .collect(MoreCollectors.toList());
   }
 
   private static File buildDataDir(Props props) {
     String dataPath = props.nonNullValue(PATH_DATA.getKey());
-    return new File(dataPath, "es6");
+    return new File(dataPath, "es7");
   }
 
   private static File buildLogPath(Props props) {

server/sonar-main/src/test/java/org/sonar/application/es/EsInstallationTest.java

@@ -102,7 +102,7 @@ public class EsInstallationTest {
 
     EsInstallation underTest = new EsInstallation(props);
 
-    assertThat(underTest.getDataDirectory()).isEqualTo(new File(dataDir, "es6"));
+    assertThat(underTest.getDataDirectory()).isEqualTo(new File(dataDir, "es7"));
   }
 
   @Test
@@ -133,8 +133,8 @@ public class EsInstallationTest {
     EsInstallation underTest = new EsInstallation(props);
 
     assertThat(underTest.getOutdatedSearchDirectories())
-      .extracting(t -> t.getName())
-      .containsOnly("es", "es5");
+      .extracting(File::getName)
+      .containsExactlyInAnyOrder("es", "es5", "es6");
   }
 
   @Test