| /* |
| * 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.schema; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.phoenix.query.QueryServices; |
| import org.apache.phoenix.query.QueryServicesOptions; |
| |
| public class MetaDataSplitPolicy extends SplitOnLeadingVarCharColumnsPolicy { |
| |
| @Override |
| protected boolean shouldSplit() { |
| Configuration conf = getConf(); |
| boolean allowSplittableSystemCatalogRollback = conf.getBoolean |
| (QueryServices.ALLOW_SPLITTABLE_SYSTEM_CATALOG_ROLLBACK, |
| QueryServicesOptions.DEFAULT_ALLOW_SPLITTABLE_SYSTEM_CATALOG_ROLLBACK); |
| boolean allowSystemCatalogToSplit = conf.getBoolean(QueryServices.SYSTEM_CATALOG_SPLITTABLE, |
| QueryServicesOptions.DEFAULT_SYSTEM_CATALOG_SPLITTABLE); |
| return super.shouldSplit() && allowSystemCatalogToSplit && !allowSplittableSystemCatalogRollback; |
| } |
| |
| @Override |
| protected int getColumnToSplitAt() { |
| // SYSTEM.CATALOG rowkey is (tenant id, schema name, table name, column name, |
| // column family) ensure all meta data rows for a given schema are in the same |
| // region (indexes and tables are in the same schema as we lock the parent table |
| // when modifying an index) |
| return 2; |
| } |
| |
| } |