HBASE-23334 The table-lock node of zk is not needed since HBASE-16786 (apache#873)

Signed-off-by: Guangxu Cheng <gxcheng@apache.org>

Author: bsglz

hbase-client/src/main/java/org/apache/hadoop/hbase/zookeeper/ZNodePaths.java

@@ -75,8 +75,6 @@ public class ZNodePaths {
   public final String regionNormalizerZNode;
   // znode containing the state of all switches, currently there are split and merge child node.
   public final String switchZNode;
-  // znode containing the lock for the tables
-  public final String tableLockZNode;
   // znode containing namespace descriptors
   public final String namespaceZNode;
   // znode of indicating master maintenance mode
@@ -116,7 +114,6 @@ public ZNodePaths(Configuration conf) {
     regionNormalizerZNode =
         joinZNode(baseZNode, conf.get("zookeeper.znode.regionNormalizer", "normalizer"));
     switchZNode = joinZNode(baseZNode, conf.get("zookeeper.znode.switch", "switch"));
-    tableLockZNode = joinZNode(baseZNode, conf.get("zookeeper.znode.tableLock", "table-lock"));
     namespaceZNode = joinZNode(baseZNode, conf.get("zookeeper.znode.namespace", "namespace"));
     masterMaintZNode =
         joinZNode(baseZNode, conf.get("zookeeper.znode.masterMaintenance", "master-maintenance"));
@@ -146,7 +143,6 @@ public String toString() {
         .append(", balancerZNode=").append(balancerZNode)
         .append(", regionNormalizerZNode=").append(regionNormalizerZNode)
         .append(", switchZNode=").append(switchZNode)
-        .append(", tableLockZNode=").append(tableLockZNode)
         .append(", namespaceZNode=").append(namespaceZNode)
         .append(", masterMaintZNode=").append(masterMaintZNode)
         .append(", replicationZNode=").append(replicationZNode)

hbase-client/src/test/java/org/apache/hadoop/hbase/zookeeper/TestZNodePaths.java

@@ -46,7 +46,6 @@ public void testIsClientReadable() {
     assertTrue(znodePaths.isClientReadable(ZNodePaths.joinZNode(znodePaths.tableZNode, "foo")));
     assertTrue(znodePaths.isClientReadable(znodePaths.rsZNode));
 
-    assertFalse(znodePaths.isClientReadable(znodePaths.tableLockZNode));
     assertFalse(znodePaths.isClientReadable(znodePaths.balancerZNode));
     assertFalse(znodePaths.isClientReadable(znodePaths.regionNormalizerZNode));
     assertFalse(znodePaths.isClientReadable(znodePaths.clusterStateZNode));

hbase-zookeeper/src/main/java/org/apache/hadoop/hbase/zookeeper/ZKWatcher.java

@@ -192,7 +192,6 @@ private void createBaseZNodes() throws ZooKeeperConnectionException {
       ZKUtil.createAndFailSilent(this, znodePaths.tableZNode);
       ZKUtil.createAndFailSilent(this, znodePaths.splitLogZNode);
       ZKUtil.createAndFailSilent(this, znodePaths.backupMasterAddressesZNode);
-      ZKUtil.createAndFailSilent(this, znodePaths.tableLockZNode);
       ZKUtil.createAndFailSilent(this, znodePaths.masterMaintZNode);
     } catch (KeeperException e) {
       throw new ZooKeeperConnectionException(