Removed ZooKeeperLockChecker.invalidateCache(String)

core/src/main/java/org/apache/accumulo/core/clientImpl/ClientTabletCacheImpl.java

@@ -155,8 +155,6 @@ CachedTablets lookupTablet(ClientContext context, CachedTablet src, Text row, Te
 
   public interface TabletServerLockChecker {
     boolean isLockHeld(String tserver, String session);
-
-    void invalidateCache(String server);
   }
 
   private class LockCheckerSession {

core/src/main/java/org/apache/accumulo/core/clientImpl/ZookeeperLockChecker.java

@@ -22,7 +22,6 @@
 
 import java.util.Set;
 
-import org.apache.accumulo.core.Constants;
 import org.apache.accumulo.core.clientImpl.ClientTabletCacheImpl.TabletServerLockChecker;
 import org.apache.accumulo.core.lock.ServiceLock;
 import org.apache.accumulo.core.lock.ServiceLockPaths;
@@ -65,10 +64,4 @@ public boolean isLockHeld(String server, String session) {
     return false;
   }
 
-  @Override
-  public void invalidateCache(String tserver) {
-    // The path for the tserver contains a resource group. The resource group is unknown, so can not
-    // construct a prefix. Therefore clear any path that contains the tserver.
-    zc.clear(path -> path.startsWith(Constants.ZTSERVERS) && path.contains(tserver));
-  }
 }

core/src/test/java/org/apache/accumulo/core/clientImpl/ClientTabletCacheImplTest.java

@@ -556,8 +556,6 @@ public boolean isLockHeld(String tserver, String session) {
       return true;
     }
 
-    @Override
-    public void invalidateCache(String server) {}
   }
 
   static class TestRootClientTabletCache extends RootClientTabletCache {
@@ -1564,9 +1562,6 @@ public void testLostLock() throws Exception {
           public boolean isLockHeld(String tserver, String session) {
             return activeLocks.contains(tserver + ":" + session);
           }
-
-          @Override
-          public void invalidateCache(String server) {}
         });
 
     KeyExtent ke1 = createNewKeyExtent("foo", null, null);