title: SonarQube doesn't show any issues with Maven project
body: <p>I was using Sonar two weeks ago and It worked fine. </p>
  
  <p>Now, when I run sonar, without having changed the project, it shows me 0 issues, 0% technical debt, etc .. ( 20-30 issues were found two weeks ago and the project didn't have changed)</p>
  
  <p>This is the result of mvn sonar:sonar </p>
  
  <pre><code>mvn sonar:sonar
  
  [INFO] Scanning for projects...
  [INFO]
  [INFO] ------------------------------------------------------------------------
  [INFO] Building Golzio-Maumert-Rebouh-SillaPellicer 1.0
  [INFO] ------------------------------------------------------------------------
  [INFO]
  [INFO] --- sonar-maven-plugin:2.6:sonar (default-cli) @ Golzio-Maumert-Rebouh-SillaPellicer ---
  [INFO] SonarQube version: 5.1.1
  INFO: Default locale: "en_US", source code encoding: "UTF-8"
  INFO: Work directory: /Users/rebouhaymen/Documents/Projects/MinesAles/1A/ProjetGL/Golzio-Maumert-Rebouh-SillaPellicer/target/sonar
  INFO: SonarQube Server 5.1.1
  [INFO] [11:35:12.231] Load global repositories
  [INFO] [11:35:12.368] Load global repositories (done) | time=140ms
  [INFO] [11:35:12.370] Server id: 20150606110929
  [INFO] [11:35:12.372] User cache: /Users/rebouhaymen/.sonar/cache
  [INFO] [11:35:12.382] Install plugins
  [INFO] [11:35:12.430] Install JDBC driver
  [INFO] [11:35:12.437] Create JDBC datasource for jdbc:mysql://localhost:3306/sonar?useUnicode=true&amp;characterEncoding=utf8
  [INFO] [11:35:13.627] Initializing Hibernate
  [INFO] [11:35:15.128] Load project repositories
  [INFO] [11:35:15.148] Load project repositories (done) | time=20ms
  [INFO] [11:35:15.149] Load project settings
  [INFO] [11:35:15.544] Load technical debt model
  [INFO] [11:35:15.565] Apply project exclusions
  [WARN] [11:35:15.843] SCM provider autodetection failed. No SCM provider claims to support this project. Please use sonar.scm.provider to define SCM of your project.
  [INFO] [11:35:15.844] -------------  Scan Golzio-Maumert-Rebouh-SillaPellicer
  [INFO] [11:35:15.848] Load module settings
  [INFO] [11:35:15.974] Load rules
  [INFO] [11:35:16.027] Base dir: /Users/rebouhaymen/Documents/Projects/MinesAles/1A/ProjetGL/Golzio-Maumert-Rebouh-SillaPellicer
  [INFO] [11:35:16.027] Working dir: /Users/rebouhaymen/Documents/Projects/MinesAles/1A/ProjetGL/Golzio-Maumert-Rebouh-SillaPellicer/target/sonar
  [INFO] [11:35:16.028] Source paths: pom.xml, src/main/java
  [INFO] [11:35:16.028] Test paths: src/test/java
  [INFO] [11:35:16.028] Binary dirs: target/classes
  [INFO] [11:35:16.028] Source encoding: UTF-8, default locale: en_US
  [INFO] [11:35:16.029] Index files
  [INFO] [11:35:16.038] 0 files indexed
  [INFO] [11:35:16.067] Sensor Lines Sensor
  [INFO] [11:35:16.068] Sensor Lines Sensor (done) | time=1ms
  [INFO] [11:35:16.068] Sensor QProfileSensor
  [INFO] [11:35:16.085] Sensor QProfileSensor (done) | time=17ms
  [INFO] [11:35:16.085] Sensor InitialOpenIssuesSensor
  [INFO] [11:35:16.094] Sensor InitialOpenIssuesSensor (done) | time=9ms
  [INFO] [11:35:16.094] Sensor ProjectLinksSensor
  [INFO] [11:35:16.108] Sensor ProjectLinksSensor (done) | time=14ms
  [INFO] [11:35:16.108] Sensor VersionEventsSensor
  [INFO] [11:35:16.122] Sensor VersionEventsSensor (done) | time=14ms
  [INFO] [11:35:16.122] Sensor Maven dependencies
  [INFO] [11:35:16.169] Sensor Maven dependencies (done) | time=47ms
  [INFO] [11:35:16.169] Sensor SCM Sensor
  [INFO] [11:35:16.169] No SCM system was detected. You can use the 'sonar.scm.provider' property to explicitly specify it.
  [INFO] [11:35:16.169] Sensor SCM Sensor (done) | time=0ms
  [INFO] [11:35:16.169] Sensor CPD Sensor
  [INFO] [11:35:16.169] Sensor CPD Sensor (done) | time=0ms
  [INFO] [11:35:16.170] No quality gate is configured.
  [INFO] [11:35:16.215] Compare to previous analysis (2015-06-06)
  [INFO] [11:35:16.221] Compare over 30 days (2015-05-07, analysis of Fri May 29 14:22:45 CEST 2015)
  [INFO] [11:35:16.550] Execute decorators...
  [INFO] [11:35:16.672] Store results in database
  [INFO] [11:35:16.749] Analysis reports generated in 31ms, dir size=142 bytes
  [INFO] [11:35:16.754] Analysis reports compressed in 5ms, zip size=518 bytes
  [INFO] [11:35:16.782] Analysis reports sent to server in 28ms
  [INFO] [11:35:16.782] ANALYSIS SUCCESSFUL, you can browse http://localhost:9000/dashboard/index/projetGL:Golzio-Maumert-Rebouh-SillaPellicer
  [INFO] [11:35:16.782] Note that you will be able to access the updated dashboard once the server has processed the submitted analysis report.
  [INFO] ------------------------------------------------------------------------
  [INFO] BUILD SUCCESS
  [INFO] ------------------------------------------------------------------------
  [INFO] Total time: 5.774 s
  [INFO] Finished at: 2015-06-06T11:35:16+02:00
  [INFO] Final Memory: 18M/420M
  [INFO] ------------------------------------------------------------------------
  `
  </code></pre>
  
  <p>This is my pom.xml :</p>
  
  <pre><code>    &lt;project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"&gt;
    &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
    &lt;groupId&gt;projetGL&lt;/groupId&gt;
    &lt;artifactId&gt;Golzio-Maumert-Rebouh-SillaPellicer&lt;/artifactId&gt;
    &lt;packaging&gt;jar&lt;/packaging&gt;
    &lt;version&gt;1.0&lt;/version&gt;
    &lt;name&gt;Golzio-Maumert-Rebouh-SillaPellicer&lt;/name&gt;
    &lt;url&gt;http://maven.apache.org&lt;/url&gt;
  
    &lt;dependencies&gt;
  
      &lt;dependency&gt;
        &lt;groupId&gt;junit&lt;/groupId&gt;
        &lt;artifactId&gt;junit&lt;/artifactId&gt;
        &lt;version&gt;4.11&lt;/version&gt;
        &lt;scope&gt;test&lt;/scope&gt;
      &lt;/dependency&gt;
  
      &lt;dependency&gt;
        &lt;groupId&gt;log4j&lt;/groupId&gt;
        &lt;artifactId&gt;log4j&lt;/artifactId&gt;
        &lt;version&gt;1.2.17&lt;/version&gt;
      &lt;/dependency&gt;
  
      &lt;dependency&gt;
        &lt;groupId&gt;mysql&lt;/groupId&gt;
        &lt;artifactId&gt;mysql-connector-java&lt;/artifactId&gt;
        &lt;version&gt;5.1.35&lt;/version&gt;
      &lt;/dependency&gt;
  
    &lt;/dependencies&gt;
  
    &lt;!-- http://maven.apache.org/general.html#encoding-warning --&gt;
    &lt;properties&gt;
      &lt;project.build.sourceEncoding&gt;UTF-8&lt;/project.build.sourceEncoding&gt;
      &lt;project.reporting.outputEncoding&gt;UTF-8&lt;/project.reporting.outputEncoding&gt;
      &lt;sonar.jdbc.url&gt;jdbc:mysql://localhost:3306/sonar?useUnicode=true&amp;amp;characterEncoding=utf8&lt;/sonar.jdbc.url&gt;
      &lt;sonar.jdbc.driver&gt;com.mysql.jdbc.Driver&lt;/sonar.jdbc.driver&gt;
      &lt;sonar.jdbc.username&gt;sonar&lt;/sonar.jdbc.username&gt;
      &lt;sonar.jdbc.password&gt;sonar&lt;/sonar.jdbc.password&gt;
      &lt;sonar.host.url&gt;http://localhost:9000&lt;/sonar.host.url&gt;
    &lt;/properties&gt;
  
    &lt;build&gt;
      &lt;plugins&gt;
        &lt;plugin&gt;
          &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
          &lt;artifactId&gt;exec-maven-plugin&lt;/artifactId&gt;
          &lt;version&gt;1.4.0&lt;/version&gt;
          &lt;executions&gt;
            &lt;execution&gt;
              &lt;id&gt;Test&lt;/id&gt;
              &lt;phase&gt;test&lt;/phase&gt;
              &lt;goals&gt;
                &lt;goal&gt;java&lt;/goal&gt;
              &lt;/goals&gt;
            &lt;/execution&gt;
          &lt;/executions&gt;
          &lt;configuration&gt;
            &lt;mainClass&gt;projetGL.App&lt;/mainClass&gt;
          &lt;/configuration&gt;
        &lt;/plugin&gt;
  
        &lt;plugin&gt;
          &lt;groupId&gt;org.codehaus.mojo&lt;/groupId&gt;
          &lt;artifactId&gt;sonar-maven-plugin&lt;/artifactId&gt;
          &lt;version&gt;2.6&lt;/version&gt;
        &lt;/plugin&gt;
      &lt;/plugins&gt;
    &lt;/build&gt;
  
  &lt;/project&gt;
  </code></pre>
  
  <p>This is the server logs :</p>
  
  <pre><code>2015.06.07 14:28:28 INFO   es[o.s.p.ProcessEntryPoint]  Starting search
  2015.06.07 14:28:28 INFO   es[o.s.s.SearchServer]  Starting Elasticsearch[sonarqube] on port 9001
  2015.06.07 14:28:33 INFO   es[o.elasticsearch.node]  [sonar-1433680102830] version[1.4.4], pid[40316], build[c88f77f/2015-02-19T13:05:36Z]
  2015.06.07 14:28:33 INFO   es[o.elasticsearch.node]  [sonar-1433680102830] initializing ...
  2015.06.07 14:28:33 INFO   es[o.e.plugins]  [sonar-1433680102830] loaded [], sites []
  2015.06.07 14:28:36 INFO   es[o.elasticsearch.node]  [sonar-1433680102830] initialized
  2015.06.07 14:28:36 INFO   es[o.elasticsearch.node]  [sonar-1433680102830] starting ...
  2015.06.07 14:28:41 INFO   es[o.e.transport]  [sonar-1433680102830] bound_address {inet[/0.0.0.0:9001]}, publish_address {inet[/172.20.10.3:9001]}
  2015.06.07 14:28:41 INFO   es[o.e.discovery]  [sonar-1433680102830] sonarqube/dOoDg_ijSRqe9slU7KQPQQ
  2015.06.07 14:28:44 INFO   es[o.e.cluster.service]  [sonar-1433680102830] new_master [sonar-1433680102830][dOoDg_ijSRqe9slU7KQPQQ][MacBook-Pro-de-Rebouh.local][inet[/172.20.10.3:9001]]{rack_id=sonar-1433680102830}, reason: zen-disco-join (elected_as_master)
  2015.06.07 14:28:44 INFO   es[o.elasticsearch.node]  [sonar-1433680102830] started
  2015.06.07 14:28:45 INFO   es[o.e.gateway]  [sonar-1433680102830] recovered [6] indices into cluster_state
  Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=160m; support was removed in 8.0
  2015.06.07 14:28:45 INFO  app[o.s.p.m.Monitor] Process[search] is up
  2015.06.07 14:28:45 INFO  app[o.s.p.m.JavaProcessLauncher] Launch process[web]: /Library/Java/JavaVirtualMachines/jdk1.8.0_25.jdk/Contents/Home/jre/bin/java -Djava.awt.headless=true -Dfile.encoding=UTF-8 -Djruby.management.enabled=false -Djruby.compile.invokedynamic=false -Xmx768m -XX:MaxPermSize=160m -XX:+HeapDumpOnOutOfMemoryError -Djava.net.preferIPv4Stack=true -Djava.io.tmpdir=/Users/rebouhaymen/Documents/sonarqube-5.1.1/temp -cp ./lib/common/*:./lib/server/*:/Users/rebouhaymen/Documents/sonarqube-5.1.1/lib/jdbc/mysql/mysql-connector-java-5.1.34.jar org.sonar.server.app.WebServer /var/folders/30/vc9tg8r5173fr2lzwxd2ywdc0000gn/T/sq-process8400283793441720685properties
  2015.06.07 14:28:51 INFO  web[o.s.p.ProcessEntryPoint] Starting web
  2015.06.07 14:28:51 INFO  web[o.s.s.app.Webapp] Webapp directory: /Users/rebouhaymen/Documents/sonarqube-5.1.1/web
  2015.06.07 14:28:51 INFO  web[o.a.c.h.Http11NioProtocol] Initializing ProtocolHandler ["http-nio-0.0.0.0-9000"]
  2015.06.07 14:28:51 INFO  web[o.a.t.u.n.NioSelectorPool] Using a shared selector for servlet write/read
  2015.06.07 14:28:52 INFO  web[o.e.plugins] [sonar-1433680102830] loaded [], sites []
  2015.06.07 14:29:03 INFO  web[o.s.s.p.ServerImpl] SonarQube Server / 5.1.1 / 0a231d24c0f1e7ce1d200274b8e9bbe00f9f49fb
  2015.06.07 14:29:03 INFO  web[o.s.c.p.Database] Create JDBC datasource for jdbc:mysql://localhost:3306/sonar?useUnicode=true&amp;characterEncoding=utf8&amp;rewriteBatchedStatements=true&amp;useConfigs=maxPerformance
  2015.06.07 14:29:04 INFO  web[o.s.s.p.DefaultServerFileSystem] SonarQube home: /Users/rebouhaymen/Documents/sonarqube-5.1.1
  2015.06.07 14:29:04 INFO  web[o.s.s.p.ServerPluginJarsInstaller] Install plugins
  2015.06.07 14:29:04 INFO  web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Core / 5.1.1 / 0a231d24c0f1e7ce1d200274b8e9bbe00f9f49fb
  2015.06.07 14:29:04 INFO  web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin Email notifications / 5.1.1 / 0a231d24c0f1e7ce1d200274b8e9bbe00f9f49fb
  2015.06.07 14:29:04 INFO  web[o.s.s.p.ServerPluginJarsInstaller] Deploy plugin English Pack / 5.1.1 / 0a231d24c0f1e7ce1d200274b8e9bbe00f9f49fb
  2015.06.07 14:29:04 INFO  web[o.s.s.p.RailsAppsDeployer] Deploy Ruby on Rails applications
  2015.06.07 14:29:04 INFO  web[o.s.j.s.AbstractDatabaseConnector] Initializing Hibernate
  2015.06.07 14:29:11 INFO  web[o.s.s.p.UpdateCenterClient] Update center: http://update.sonarsource.org/update-center.properties (no proxy)
  2015.06.07 14:29:11 INFO  web[o.s.s.n.NotificationService] Notification service started (delay 60 sec.)
  2015.06.07 14:29:11 INFO  web[o.s.s.s.IndexSynchronizer] Index rules
  2015.06.07 14:29:12 INFO  web[o.s.s.s.IndexSynchronizer] Index activeRules
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterMetrics] Register metrics
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterMetrics] Cleaning quality gate conditions
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterDebtModel] Register technical debt model
  2015.06.07 14:29:13 INFO  web[o.s.s.r.RegisterRules] Register rules
  2015.06.07 14:29:13 INFO  web[o.s.s.q.RegisterQualityProfiles] Register quality profiles
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterNewMeasureFilters] Register measure filters
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterDashboards] Register dashboards
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RegisterPermissionTemplates] Register permission templates
  2015.06.07 14:29:13 INFO  web[o.s.s.s.RenameDeprecatedPropertyKeys] Rename deprecated property keys
  2015.06.07 14:29:13 INFO  web[o.s.s.s.IndexSynchronizer] Index activities
  2015.06.07 14:29:13 INFO  web[o.s.s.s.IndexSynchronizer] Index issues
  2015.06.07 14:29:13 INFO  web[o.s.s.s.IndexSynchronizer] Index source lines
  2015.06.07 14:29:13 INFO  web[o.s.s.s.IndexSynchronizer] Index users
  2015.06.07 14:29:13 INFO  web[o.s.s.s.IndexSynchronizer] Index views
  2015.06.07 14:29:13 INFO  web[jruby.rack] jruby 1.7.9 (ruby-1.8.7p370) 2013-12-06 87b108a on Java HotSpot(TM) 64-Bit Server VM 1.8.0_25-b17 [darwin-x86_64]
  2015.06.07 14:29:13 INFO  web[jruby.rack] using a shared (threadsafe!) runtime
  2015.06.07 14:29:14 WARN   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark [10%] exceeded on [dOoDg_ijSRqe9slU7KQPQQ][sonar-1433680102830] free: 18.6gb[8%], shards will be relocated away from this node
  2015.06.07 14:29:14 INFO   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark exceeded on one or more nodes, rerouting shards
  2015.06.07 14:29:21 INFO  web[jruby.rack] keeping custom (config.logger) Rails logger instance
  2015.06.07 14:29:21 INFO  web[o.a.c.h.Http11NioProtocol] Starting ProtocolHandler ["http-nio-0.0.0.0-9000"]
  2015.06.07 14:29:21 INFO  web[o.s.s.a.TomcatAccessLog] Web server is started
  2015.06.07 14:29:21 INFO  web[o.s.s.a.EmbeddedTomcat] HTTP connector enabled on port 9000
  2015.06.07 14:29:21 INFO  app[o.s.p.m.Monitor] Process[web] is up
  2015.06.07 14:29:44 WARN   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark [10%] exceeded on [dOoDg_ijSRqe9slU7KQPQQ][sonar-1433680102830] free: 18.6gb[8%], shards will be relocated away from this node
  2015.06.07 14:30:09 INFO  web[o.s.s.c.ComputationService] Analysis of project projetGL:Golzio-Maumert-Rebouh-SillaPellicer (report 9) (done) | time=317ms
  2015.06.07 14:30:14 WARN   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark [10%] exceeded on [dOoDg_ijSRqe9slU7KQPQQ][sonar-1433680102830] free: 18.6gb[8%], shards will be relocated away from this node
  2015.06.07 14:30:44 WARN   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark [10%] exceeded on [dOoDg_ijSRqe9slU7KQPQQ][sonar-1433680102830] free: 18.6gb[8%], shards will be relocated away from this node
  2015.06.07 14:30:44 INFO   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark exceeded on one or more nodes, rerouting shards
  2015.06.07 14:31:14 WARN   es[o.e.c.r.a.decider]  [sonar-1433680102830] high disk watermark [10%] exceeded on [dOoDg_ijSRqe9slU7KQPQQ][sonar-1433680102830] free: 18.6gb[8%], shards will be relocated away from this node
  </code></pre>