HDDS-1598. Fix Ozone checkstyle issues on trunk. Contributed by Elek, Marton. (#854)

Author: elek

hadoop-hdds/server-scm/src/main/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/SCMContainerPlacementRackAware.java

@@ -51,8 +51,8 @@ public final class SCMContainerPlacementRackAware extends SCMCommonPolicy {
       LoggerFactory.getLogger(SCMContainerPlacementRackAware.class);
   private final NetworkTopology networkTopology;
   private boolean fallback;
-  private int RACK_LEVEL = 1;
-  private int MAX_RETRY= 3;
+  private static final int RACK_LEVEL = 1;
+  private static final int MAX_RETRY= 3;
 
   /**
    * Constructs a Container Placement with rack awareness.

hadoop-hdds/server-scm/src/test/java/org/apache/hadoop/hdds/scm/container/placement/algorithms/TestSCMContainerPlacementRackAware.java

@@ -53,7 +53,7 @@ public class TestSCMContainerPlacementRackAware {
   // policy prohibit fallback
   private SCMContainerPlacementRackAware policyNoFallback;
   // node storage capacity
-  private final long STORAGE_CAPACITY = 100L;
+  private static final long STORAGE_CAPACITY = 100L;
 
   @Before
   public void setup() {