[GitHub] [hbase] wchevreuil commented on a change in pull request #3488: HBASE-25393 Support split and merge region with direct insert into CF…

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wchevreuil commented on a change in pull request #3488:
URL: https://github.com/apache/hbase/pull/3488#discussion_r682092734



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File path: hbase-server/src/main/java/org/apache/hadoop/hbase/master/assignment/DirectStoreMergeRegionsStrategy.java
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@@ -0,0 +1,105 @@
+/**
+ * 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.hadoop.hbase.master.assignment;
+
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
+import org.apache.hadoop.hbase.client.RegionInfo;
+import org.apache.hadoop.hbase.client.TableDescriptor;
+import org.apache.hadoop.hbase.io.hfile.CacheConfig;
+import org.apache.hadoop.hbase.master.procedure.MasterProcedureEnv;
+import org.apache.hadoop.hbase.regionserver.HRegionFileSystem;
+import org.apache.hadoop.hbase.regionserver.HStoreFile;
+import org.apache.hadoop.hbase.regionserver.StoreFileInfo;
+import org.apache.yetus.audience.InterfaceAudience;
+
+import java.io.IOException;
+import java.util.Collection;
+
+/**
+ * <code></code>MergeRegionStrategy</code> implementation to be used in combination with
+ * <code>PersistedStoreEngine</code> to avoid renames when merging regions.
+ *
+ * To use it, define the following properties under master configuration:

Review comment:
       Changed to load both mergestrategy and write strategy from the table config.




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