Github user jackylk commented on a diff in the pull request: https://github.com/apache/carbondata/pull/1654#discussion_r157148902 --- Diff: core/src/main/java/org/apache/carbondata/core/metadata/PartitionFileStore.java --- @@ -0,0 +1,199 @@ +/* + * 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.core.metadata; + +import java.io.BufferedReader; +import java.io.BufferedWriter; +import java.io.DataInputStream; +import java.io.DataOutputStream; +import java.io.IOException; +import java.io.InputStreamReader; +import java.io.OutputStreamWriter; +import java.io.Serializable; +import java.nio.charset.Charset; +import java.util.HashMap; +import java.util.List; +import java.util.Map; + +import org.apache.carbondata.core.constants.CarbonCommonConstants; +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.fileoperations.AtomicFileOperations; +import org.apache.carbondata.core.fileoperations.AtomicFileOperationsImpl; +import org.apache.carbondata.core.fileoperations.FileWriteOperation; +import org.apache.carbondata.core.util.CarbonUtil; +import org.apache.carbondata.core.util.path.CarbonTablePath; + +import com.google.gson.Gson; + +/** + * Reads and writes the partition mapper. --- End diff -- Suggest to change to `Provide read and write support for partition mapping file in each segment`
---