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Subject [GitHub] dbwong commented on a change in pull request #419: PHOENIX-4009 Run UPDATE STATISTICS command by using MR integration on…
Date Fri, 11 Jan 2019 01:37:30 GMT
dbwong commented on a change in pull request #419: PHOENIX-4009 Run UPDATE STATISTICS command
by using MR integration on…

 File path: phoenix-core/src/main/java/org/apache/phoenix/schema/stats/
 @@ -0,0 +1,70 @@
+ * 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
+ *
+ *
+ *
+ * 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.schema.stats;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.TableName;
+import org.apache.hadoop.hbase.client.Table;
+import org.apache.hadoop.hbase.coprocessor.RegionCoprocessorEnvironment;
+import org.apache.hadoop.hbase.regionserver.InternalScanner;
+import org.apache.hadoop.hbase.regionserver.Region;
+import org.apache.hadoop.hbase.regionserver.Store;
+import org.apache.phoenix.jdbc.PhoenixConnection;
+import org.apache.phoenix.jdbc.PhoenixDatabaseMetaData;
+import org.apache.phoenix.util.SchemaUtil;
+import java.sql.SQLException;
+ * Implementation for DefaultStatisticsCollector when running inside Hadoop MR job mapper
+ * Triggered via UpdateStatisticsTool class
+ */
+public class MapperStatisticsCollector extends DefaultStatisticsCollector {
 Review comment:
   As discussed offline I still prefer an approach of injecting a statswriter if possible
to this inheritance pattern.  

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