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[flink] support to report statistic to hms after partition idle
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115
...paimon-flink-common/src/main/java/org/apache/paimon/flink/sink/partition/HmsReporter.java
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| /* | ||
| * 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. | ||
| */ | ||
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| package org.apache.paimon.flink.sink.partition; | ||
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| import org.apache.paimon.Snapshot; | ||
| import org.apache.paimon.fs.Path; | ||
| import org.apache.paimon.io.DataFileMeta; | ||
| import org.apache.paimon.metastore.MetastoreClient; | ||
| import org.apache.paimon.table.FileStoreTable; | ||
| import org.apache.paimon.table.source.DataSplit; | ||
| import org.apache.paimon.table.source.DeletionFile; | ||
| import org.apache.paimon.table.source.ScanMode; | ||
| import org.apache.paimon.table.source.snapshot.SnapshotReader; | ||
| import org.apache.paimon.utils.Preconditions; | ||
| import org.apache.paimon.utils.SnapshotManager; | ||
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| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
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| import java.io.Closeable; | ||
| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.HashMap; | ||
| import java.util.LinkedHashMap; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
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| import static org.apache.paimon.utils.PartitionPathUtils.extractPartitionSpecFromPath; | ||
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| /** Action to report the table statistic from the latest snapshot to HMS. */ | ||
| public class HmsReporter implements Closeable { | ||
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| private static final Logger LOG = LoggerFactory.getLogger(HmsReporter.class); | ||
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| private final MetastoreClient metastoreClient; | ||
| private final SnapshotReader snapshotReader; | ||
| private final SnapshotManager snapshotManager; | ||
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| public HmsReporter(FileStoreTable table, MetastoreClient client) { | ||
| this.metastoreClient = | ||
| Preconditions.checkNotNull(client, "the metastore client factory is null"); | ||
| this.snapshotReader = table.newSnapshotReader(); | ||
| this.snapshotManager = table.snapshotManager(); | ||
| } | ||
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| public void report(String partition, long modifyTime) throws Exception { | ||
| Snapshot snapshot = snapshotManager.latestSnapshot(); | ||
| if (snapshot != null) { | ||
| LinkedHashMap<String, String> partitionSpec = | ||
| extractPartitionSpecFromPath(new Path(partition)); | ||
| List<DataSplit> splits = | ||
| new ArrayList<>( | ||
| snapshotReader | ||
| .withMode(ScanMode.ALL) | ||
| .withPartitionFilter(partitionSpec) | ||
| .withSnapshot(snapshot) | ||
| .read() | ||
| .dataSplits()); | ||
| long rowCount = 0; | ||
| long totalSize = 0; | ||
| long fileCount = 0; | ||
| for (DataSplit split : splits) { | ||
| List<DataFileMeta> fileMetas = split.dataFiles(); | ||
| rowCount += split.rowCount(); | ||
| fileCount += fileMetas.size(); | ||
| for (DataFileMeta fileMeta : fileMetas) { | ||
| totalSize += fileMeta.fileSize(); | ||
| } | ||
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| if (split.deletionFiles().isPresent()) { | ||
| fileCount += split.deletionFiles().get().size(); | ||
| totalSize += | ||
| split.deletionFiles().get().stream() | ||
| .map(DeletionFile::length) | ||
| .reduce(0L, Long::sum); | ||
| } | ||
| } | ||
| Map<String, String> statistic = new HashMap<>(); | ||
| // refer to org.apache.hadoop.hive.common.StatsSetupConst | ||
| statistic.put("numFiles", String.valueOf(fileCount)); | ||
| statistic.put("totalSize", String.valueOf(totalSize)); | ||
| statistic.put("numRows", String.valueOf(rowCount)); | ||
| // refer to org.apache.hadoop.hive.metastore.api.hive_metastoreConstants | ||
| statistic.put("transient_lastDdlTime", String.valueOf(modifyTime / 1000)); | ||
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| LOG.info("alter partition {} with statistic {}.", partition, statistic); | ||
| metastoreClient.alterPartition(partitionSpec, statistic, modifyTime); | ||
| } | ||
| } | ||
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| @Override | ||
| public void close() throws IOException { | ||
| try { | ||
| metastoreClient.close(); | ||
| } catch (Exception e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
| } |
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