pkuwm commented on a change in pull request #855: Make ZkBaseDataAccessor 
realm-aware
URL: https://github.com/apache/helix/pull/855#discussion_r389826601
 
 

 ##########
 File path: 
helix-core/src/main/java/org/apache/helix/manager/zk/ZkBaseDataAccessor.java
 ##########
 @@ -1248,4 +1280,127 @@ public void close() {
       _zkClient.close();
     }
   }
+
+  public static class Builder {
+    private String zkAddress;
+    private RealmAwareZkClient.RealmMode realmMode;
+    private ZkBaseDataAccessor.ZkClientType zkClientType;
+    private RealmAwareZkClient.RealmAwareZkConnectionConfig 
realmAwareZkConnectionConfig;
+    private RealmAwareZkClient.RealmAwareZkClientConfig 
realmAwareZkClientConfig;
+
+    public Builder() {
+    }
+
+    public ZkBaseDataAccessor.Builder setZkAddress(String zkAddress) {
+      this.zkAddress = zkAddress;
+      return this;
+    }
+
+    public ZkBaseDataAccessor.Builder 
setRealmMode(RealmAwareZkClient.RealmMode realmMode) {
+      this.realmMode = realmMode;
+      return this;
+    }
+
+    public ZkBaseDataAccessor.Builder setZkClientType(
+        ZkBaseDataAccessor.ZkClientType zkClientType) {
+      this.zkClientType = zkClientType;
+      return this;
+    }
+
+    public ZkBaseDataAccessor.Builder setRealmAwareZkConnectionConfig(
+        RealmAwareZkClient.RealmAwareZkConnectionConfig 
realmAwareZkConnectionConfig) {
+      this.realmAwareZkConnectionConfig = realmAwareZkConnectionConfig;
+      return this;
+    }
+
+    public ZkBaseDataAccessor.Builder setRealmAwareZkClientConfig(
+        RealmAwareZkClient.RealmAwareZkClientConfig realmAwareZkClientConfig) {
+      this.realmAwareZkClientConfig = realmAwareZkClientConfig;
+      return this;
+    }
+
+    public ZkBaseDataAccessor<?> build() throws Exception {
+      validate();
+      return new ZkBaseDataAccessor<>(this);
+    }
+
+    /**
+     * Validate the given parameters before creating an instance of 
ConfigAccessor.
 
 Review comment:
   Change comment.

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