vivekratnavel commented on a change in pull request #1146: HDDS-1366. Add ability in Recon to track the number of small files in an Ozone Cluster URL: https://github.com/apache/hadoop/pull/1146#discussion_r306501528
########## File path: hadoop-ozone/ozone-recon/src/main/java/org/apache/hadoop/ozone/recon/tasks/FileSizeCountTask.java ########## @@ -0,0 +1,198 @@ +/** + * 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 + * <p> + * http://www.apache.org/licenses/LICENSE-2.0 + * <p> + * 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.hadoop.ozone.recon.tasks; + +import com.google.inject.Inject; +import org.apache.commons.lang3.tuple.ImmutablePair; +import org.apache.commons.lang3.tuple.Pair; +import org.apache.hadoop.ozone.om.OMMetadataManager; +import org.apache.hadoop.ozone.om.helpers.OmKeyInfo; +import org.apache.hadoop.utils.db.Table; +import org.apache.hadoop.utils.db.TableIterator; +import org.hadoop.ozone.recon.schema.tables.daos.FileCountBySizeDao; +import org.hadoop.ozone.recon.schema.tables.pojos.FileCountBySize; +import org.jooq.Configuration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + + +import java.io.IOException; +import java.util.ArrayList; +import java.util.Collection; +import java.util.Iterator; + +/** + * Class to iterate over the OM DB and store the counts of existing/new + * files binned into ranges (1KB, 10Kb..,10MB,..1PB) to the Recon + * fileSize DB. + */ +public class FileSizeCountTask extends ReconDBUpdateTask { + private static final Logger LOG = + LoggerFactory.getLogger(FileSizeCountTask.class); + + private long[] upperBoundCount = new long[16]; + private long minFileSize = 1024L; + private Collection<String> tables = new ArrayList<>(); + private FileCountBySizeDao fileCountBySizeDao; + + @Inject + public FileSizeCountTask(OMMetadataManager omMetadataManager, Configuration sqlConfiguration) { + super("FileSizeCountTask"); + try { + tables.add(omMetadataManager.getKeyTable().getName()); + fileCountBySizeDao = new FileCountBySizeDao(sqlConfiguration); + } catch (Exception e) { + LOG.error("Unable to fetch Key Table updates ", e); + } + } + + /** + * Read the Keys from OM snapshot DB and calculate the upper bound of + * File Size it belongs to. + * + * @param omMetadataManager OM Metadata instance. + * @return Pair + */ + @Override + public Pair<String, Boolean> reprocess(OMMetadataManager omMetadataManager) { + LOG.info("Starting a 'reprocess' run of FileSizeCountTask."); + + Table<String, OmKeyInfo> omKeyInfoTable = omMetadataManager.getKeyTable(); + try (TableIterator<String, ? extends Table.KeyValue<String, OmKeyInfo>> + keyIter = omKeyInfoTable.iterator()) { + while(keyIter.hasNext()) { + Table.KeyValue<String, OmKeyInfo> kv = keyIter.next(); + countFileSize(kv.getValue()); + } + populateFileCountBySizeDB(); + + } catch (IOException ioEx) { + LOG.error("Unable to populate Container Key Prefix data in Recon DB. ", ioEx); Review comment: Can we log a better error message here? We are only trying to populate file counts by size and not container key prefix here. Also, the indentation seems to be off here. ---------------------------------------------------------------- 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 With regards, Apache Git Services --------------------------------------------------------------------- To unsubscribe, e-mail: common-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: common-issues-h...@hadoop.apache.org
