ArafatKhan2198 commented on code in PR #4764: URL: https://github.com/apache/ozone/pull/4764#discussion_r1230782758
########## hadoop-ozone/recon/src/main/java/org/apache/hadoop/ozone/recon/tasks/OmTableInsightTask.java: ########## @@ -0,0 +1,360 @@ +/* + * 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.common.collect.Iterators; +import com.google.inject.Inject; +import org.apache.commons.lang3.tuple.ImmutablePair; +import org.apache.commons.lang3.tuple.Pair; +import org.apache.commons.lang3.tuple.Triple; +import org.apache.hadoop.hdds.utils.db.Table; +import org.apache.hadoop.hdds.utils.db.TableIterator; +import org.apache.hadoop.ozone.om.OMMetadataManager; +import org.apache.hadoop.ozone.om.helpers.OmKeyInfo; +import org.apache.hadoop.ozone.recon.recovery.ReconOMMetadataManager; +import org.hadoop.ozone.recon.schema.tables.daos.GlobalStatsDao; +import org.hadoop.ozone.recon.schema.tables.pojos.GlobalStats; +import org.jooq.Configuration; +import org.slf4j.Logger; +import org.slf4j.LoggerFactory; + +import java.io.IOException; +import java.sql.Timestamp; +import java.util.ArrayList; +import java.util.Collection; +import java.util.HashMap; +import java.util.Iterator; +import java.util.List; +import java.util.Map; + +import java.util.Map.Entry; + +import static org.apache.hadoop.ozone.om.OmMetadataManagerImpl.OPEN_KEY_TABLE; +import static org.apache.hadoop.ozone.om.OmMetadataManagerImpl.OPEN_FILE_TABLE; +import static org.jooq.impl.DSL.currentTimestamp; +import static org.jooq.impl.DSL.select; +import static org.jooq.impl.DSL.using; + +/** + * Class to iterate over the OM DB and store the total counts of volumes, + * buckets, keys, open keys, deleted keys, etc. + */ +public class OmTableInsightTask implements ReconOmTask { + private static final Logger LOG = + LoggerFactory.getLogger(OmTableInsightTask.class); + + private GlobalStatsDao globalStatsDao; + private Configuration sqlConfiguration; + private ReconOMMetadataManager reconOMMetadataManager; + + @Inject + public OmTableInsightTask(GlobalStatsDao globalStatsDao, + Configuration sqlConfiguration, + ReconOMMetadataManager reconOMMetadataManager) { + this.globalStatsDao = globalStatsDao; + this.sqlConfiguration = sqlConfiguration; + this.reconOMMetadataManager = reconOMMetadataManager; + } + + /** + * Iterates the rows of each table in the OM snapshot DB and calculates the + * counts and sizes for table data. + * + * For tables that require data size calculation + * (as returned by getTablesToCalculateSize), both the number of + * records (count) and total data size of the records are calculated. + * For all other tables, only the count of records is calculated. + * + * @param omMetadataManager OM Metadata instance. + * @return Pair + */ + @Override + public Pair<String, Boolean> reprocess(OMMetadataManager omMetadataManager) { + HashMap<String, Long> objectCountMap = initializeCountMap(); + HashMap<String, Long> unReplicatedSizeCountMap = initializeSizeMap(false); + HashMap<String, Long> replicatedSizeCountMap = initializeSizeMap(true); + + for (String tableName : getTaskTables()) { + Table table = omMetadataManager.getTable(tableName); + if (table == null) { + LOG.error("Table " + tableName + " not found in OM Metadata."); + return new ImmutablePair<>(getTaskName(), false); + } + + try ( + TableIterator<String, ? extends Table.KeyValue<String, ?>> iterator + = table.iterator()) { + if (getTablesToCalculateSize().contains(tableName)) { + Triple<Long, Long, Long> details = getTableSizeAndCount(iterator); + objectCountMap.put(getTableCountKeyFromTable(tableName), + details.getLeft()); + unReplicatedSizeCountMap.put( + getUnReplicatedSizeKeyFromTable(tableName), details.getMiddle()); + replicatedSizeCountMap.put(getReplicatedSizeKeyFromTable(tableName), + details.getRight()); + } else { + long count = Iterators.size(iterator); + objectCountMap.put(getTableCountKeyFromTable(tableName), count); + } + } catch (IOException ioEx) { + LOG.error("Unable to populate Table Count in Recon DB.", ioEx); + return new ImmutablePair<>(getTaskName(), false); + } + } + // Write the data to the DB + if (!objectCountMap.isEmpty()) { + writeDataToDB(objectCountMap); + } + if (!unReplicatedSizeCountMap.isEmpty()) { + writeDataToDB(unReplicatedSizeCountMap); + } + if (!replicatedSizeCountMap.isEmpty()) { + writeDataToDB(replicatedSizeCountMap); + } + + LOG.info("Completed a 'reprocess' run of OmTableInsightTask."); + return new ImmutablePair<>(getTaskName(), true); + } + + /** + * Returns a triple with the total count of records (left), total unreplicated + * size (middle), and total replicated size (right) in the given iterator. + * Increments count for each record and adds the dataSize if a record's value + * is an instance of OmKeyInfo. If the iterator is null, returns (0, 0, 0). + * + * @param iterator The iterator over the table to be iterated. + * @return A Triple with three Long values representing the count, + * unreplicated size and replicated size. + * @throws IOException If an I/O error occurs during the iterator traversal. + */ + private Triple<Long, Long, Long> getTableSizeAndCount( + TableIterator<String, ? extends Table.KeyValue<String, ?>> iterator) + throws IOException { + long count = 0; + long unReplicatedSize = 0; + long replicatedSize = 0; + + if (iterator != null) { + while (iterator.hasNext()) { + Table.KeyValue<String, ?> kv = iterator.next(); + if (kv != null && kv.getValue() != null) { + if (kv.getValue() instanceof OmKeyInfo) { + OmKeyInfo omKeyInfo = (OmKeyInfo) kv.getValue(); + unReplicatedSize += omKeyInfo.getDataSize(); + replicatedSize += omKeyInfo.getReplicatedSize(); + } + count++; // Increment count for each row + } + } + } + + return Triple.of(count, unReplicatedSize, replicatedSize); + } + + /** + * Returns a collection of table names that require data size calculation. + */ + public Collection<String> getTablesToCalculateSize() { + List<String> taskTables = new ArrayList<>(); + taskTables.add(OPEN_KEY_TABLE); + taskTables.add(OPEN_FILE_TABLE); + return taskTables; + } + + @Override + public String getTaskName() { + return "OmTableInsightTask"; + } + + public Collection<String> getTaskTables() { + return new ArrayList<>(reconOMMetadataManager.listTableNames()); + } + + /** + * Read the update events and update the count and sizes of respective object + * (volume, bucket, key etc.) based on the action (put or delete). + * + * @param events Update events - PUT, DELETE and UPDATE. + * @return Pair + */ + @Override + public Pair<String, Boolean> process(OMUpdateEventBatch events) { + Iterator<OMDBUpdateEvent> eventIterator = events.getIterator(); + HashMap<String, Long> objectCountMap = initializeCountMap(); + HashMap<String, Long> unreplicatedSizeCountMap = initializeSizeMap(false); + HashMap<String, Long> replicatedSizeCountMap = initializeSizeMap(true); + final Collection<String> taskTables = getTaskTables(); + final Collection<String> sizeRelatedTables = getTablesToCalculateSize(); + + while (eventIterator.hasNext()) { + OMDBUpdateEvent<String, Object> omdbUpdateEvent = eventIterator.next(); + String tableName = omdbUpdateEvent.getTable(); + + if (!taskTables.contains(tableName)) { + continue; + } + + String countKey = getTableCountKeyFromTable(tableName); + String unReplicatedSizeKey = + getUnReplicatedSizeKeyFromTable(tableName); + String replicatedSizeKey = + getReplicatedSizeKeyFromTable(tableName); + + try { + switch (omdbUpdateEvent.getAction()) { + case PUT: + objectCountMap.computeIfPresent(countKey, (k, count) -> count + 1L); Review Comment: Thanks for confirming @sumitagrawl I'll add an UPDATE event to the task! -- This is an automated message from the Apache Git Service. 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