QiangCai commented on a change in pull request #4005: URL: https://github.com/apache/carbondata/pull/4005#discussion_r533028217
########## File path: core/src/main/java/org/apache/carbondata/core/util/CleanFilesUtil.java ########## @@ -0,0 +1,196 @@ +/* + * 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.util; + +import java.io.IOException; +import java.util.*; +import java.util.stream.Collectors; + +import org.apache.carbondata.common.logging.LogServiceFactory; +import org.apache.carbondata.core.constants.CarbonCommonConstants; +import org.apache.carbondata.core.datastore.filesystem.CarbonFile; +import org.apache.carbondata.core.datastore.impl.FileFactory; +import org.apache.carbondata.core.metadata.SegmentFileStore; +import org.apache.carbondata.core.metadata.schema.table.CarbonTable; +import org.apache.carbondata.core.mutate.CarbonUpdateUtil; +import org.apache.carbondata.core.statusmanager.LoadMetadataDetails; +import org.apache.carbondata.core.statusmanager.SegmentStatus; +import org.apache.carbondata.core.statusmanager.SegmentStatusManager; +import org.apache.carbondata.core.util.path.CarbonTablePath; + +import org.apache.log4j.Logger; + +/** + *This util provide clean stale data methods for clean files command + */ +public class CleanFilesUtil { + + private static final Logger LOGGER = + LogServiceFactory.getLogService(CleanFilesUtil.class.getName()); + + /** + * This method will clean all the stale segments for a table, delete the source folder after + * copying the data to the trash and also remove the .segment files of the stale segments + */ + public static void cleanStaleSegments(CarbonTable carbonTable) + throws IOException { + long timeStampForTrashFolder = CarbonUpdateUtil.readCurrentTime(); + List<String> staleSegmentFiles = getStaleSegmentFiles(carbonTable); + for (String staleSegmentFile : staleSegmentFiles) { + String segmentNumber = CarbonTablePath.DataFileUtil.getSegmentNoFromSegmentFile( + staleSegmentFile); + SegmentFileStore fileStore = new SegmentFileStore(carbonTable.getTablePath(), + staleSegmentFile); + Map<String, SegmentFileStore.FolderDetails> locationMap = fileStore.getSegmentFile() + .getLocationMap(); + if (locationMap != null) { + // segmentLocation is the location in Fact/part0 where the segment is stored. + CarbonFile segmentLocation = FileFactory.getCarbonFile(carbonTable.getTablePath() + Review comment: CarbonFile segmentPath = CarbonTablePath.getSegmentPath(carbonTable.getTablePath(), segmentNo) ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org
