Github user sounakr commented on a diff in the pull request: https://github.com/apache/carbondata/pull/1359#discussion_r139123481 --- Diff: examples/spark2/src/main/scala/org/apache/carbondata/examples/MinMaxDataMapFactory.java --- @@ -0,0 +1,141 @@ +/* + * 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.carbondata.examples; + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Arrays; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.carbondata.core.cache.Cache; +import org.apache.carbondata.core.cache.CacheProvider; +import org.apache.carbondata.core.cache.CacheType; +import org.apache.carbondata.core.datamap.DataMapDistributable; +import org.apache.carbondata.core.datamap.DataMapMeta; +import org.apache.carbondata.core.datamap.TableDataMap; +import org.apache.carbondata.core.datamap.dev.DataMap; +import org.apache.carbondata.core.datamap.dev.DataMapFactory; +import org.apache.carbondata.core.datamap.dev.DataMapWriter; +import org.apache.carbondata.core.datastore.filesystem.CarbonFile; +import org.apache.carbondata.core.datastore.filesystem.CarbonFileFilter; +import org.apache.carbondata.core.datastore.impl.FileFactory; +import org.apache.carbondata.core.events.ChangeEvent; +import org.apache.carbondata.core.indexstore.TableBlockIndexUniqueIdentifier; +import org.apache.carbondata.core.indexstore.blockletindex.BlockletDataMap; +import org.apache.carbondata.core.indexstore.schema.FilterType; +import org.apache.carbondata.core.memory.MemoryException; +import org.apache.carbondata.core.metadata.AbsoluteTableIdentifier; + + +/** + * Table map for blocklet + */ +public class MinMaxDataMapFactory implements DataMapFactory { + + private AbsoluteTableIdentifier identifier; + + // segmentId -> list of index file + private Map<String, List<TableBlockIndexUniqueIdentifier>> segmentMap = new HashMap<>(); + + private Cache<TableBlockIndexUniqueIdentifier, DataMap> cache; + + @Override + public void init(AbsoluteTableIdentifier identifier, String dataMapName) { + this.identifier = identifier; + cache = CacheProvider.getInstance() --- End diff -- Removed.
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