PHOENIX-7566 [1/n] HAGroupStoreClient/Manager changes for Consistent HA (#2244)

phoenix-core-client/src/main/java/org/apache/phoenix/coprocessorclient/BaseScannerRegionObserverConstants.java

@@ -197,6 +197,11 @@ public static long getMaxLookbackInMillis(Configuration conf) {
    */
   public static final String CUSTOM_ANNOTATIONS = "_Annot";
 
-  /** Exposed for testing */
-  public static final String SCANNER_OPENED_TRACE_INFO = "Scanner opened on server";
+    /** Exposed for testing */
+    public static final String SCANNER_OPENED_TRACE_INFO = "Scanner opened on server";
+
+    /**
+     * Attribute name used to pass HAGroupName in Mutations.
+     */
+    public static final String HA_GROUP_NAME_ATTRIB = "_HAGroupName";
 }

phoenix-core-client/src/main/java/org/apache/phoenix/exception/InvalidClusterRoleTransitionException.java

@@ -0,0 +1,41 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.phoenix.exception;
+
+/**
+ * Exception thrown when attempting an invalid cluster role transition.
+ */
+public class InvalidClusterRoleTransitionException extends Exception {
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * @param msg reason for the exception
+     */
+    public InvalidClusterRoleTransitionException(String msg) {
+        super(msg);
+    }
+
+    /**
+     * @param msg reason for the exception
+     * @param cause the underlying cause
+     */
+    public InvalidClusterRoleTransitionException(String msg, Throwable cause) {
+        super(msg, cause);
+    }
+
+}

phoenix-core-client/src/main/java/org/apache/phoenix/exception/MutationBlockedIOException.java

@@ -32,5 +32,4 @@ public class MutationBlockedIOException extends IOException {
   public MutationBlockedIOException(String msg) {
     super(msg);
   }
-
 }

phoenix-core-client/src/main/java/org/apache/phoenix/exception/StaleHAGroupStoreRecordVersionException.java

@@ -0,0 +1,42 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.apache.phoenix.exception;
+
+/**
+ * Exception thrown when attempting to update HAGroupStoreRecord with a stale ZK stat version,
+ * indicating that the record has been modified by another process.
+ */
+public class StaleHAGroupStoreRecordVersionException extends Exception {
+    private static final long serialVersionUID = 1L;
+
+    /**
+     * @param msg reason for the exception
+     */
+    public StaleHAGroupStoreRecordVersionException(String msg) {
+        super(msg);
+    }
+
+    /**
+     * @param msg reason for the exception
+     * @param cause the underlying cause
+     */
+    public StaleHAGroupStoreRecordVersionException(String msg, Throwable cause) {
+        super(msg, cause);
+    }
+
+}