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https://issues.apache.org/jira/browse/GOBBLIN-1001?focusedWorklogId=358857&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-358857
]
ASF GitHub Bot logged work on GOBBLIN-1001:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 12/Dec/19 19:05
Start Date: 12/Dec/19 19:05
Worklog Time Spent: 10m
Work Description: autumnust commented on pull request #2846:
[GOBBLIN-1001] Implement TimePartitionGlobFinder
URL: https://github.com/apache/incubator-gobblin/pull/2846#discussion_r357318005
##########
File path:
gobblin-data-management/src/main/java/org/apache/gobblin/data/management/dataset/TimePartitionGlobFinder.java
##########
@@ -0,0 +1,148 @@
+/*
+ * 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.gobblin.data.management.dataset;
+
+import java.io.IOException;
+import java.time.ZoneId;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Properties;
+import java.util.Set;
+
+import org.apache.hadoop.fs.FileSystem;
+import org.apache.hadoop.fs.Path;
+
+import lombok.extern.slf4j.Slf4j;
+
+import
org.apache.gobblin.data.management.retention.profile.ConfigurableGlobDatasetFinder;
+import org.apache.gobblin.dataset.DatasetsFinder;
+import org.apache.gobblin.dataset.FileSystemDataset;
+import org.apache.gobblin.util.PathUtils;
+
+
+@Slf4j
+public class TimePartitionGlobFinder implements
DatasetsFinder<FileSystemDataset> {
+ private static final String CONF_PREFIX = "timePartitionGlobFinder.";
+
+ public static final String PARTITION_PREFIX = CONF_PREFIX +
"partitionPrefix";
+ public static final String TIME_FORMAT = CONF_PREFIX + "timeFormat";
+ public static final String TIME_ZONE = CONF_PREFIX + "timeZone";
+ public static final String ENABLE_EMPTY_PARTITION = CONF_PREFIX +
"enableEmptyPartition";
+
+ private static final String DEFAULT_TIME_ZONE = "America/Los_Angeles";
+
+ private final String datasetPattern;
+ private final String datasetPartitionPattern;
+ private final Path yesterdayPartition;
+
+ private final Properties props;
+ private final FileSystem fs;
+ private final boolean enableEmptyPartition;
+
+ public TimePartitionGlobFinder(FileSystem fs, Properties properties) {
+ datasetPattern =
properties.getProperty(ConfigurableGlobDatasetFinder.DATASET_FINDER_PATTERN_KEY);
+ Path datasetPartitionPath = new Path(datasetPattern);
+
+ String partitionPrefix = properties.getProperty(PARTITION_PREFIX, "");
+ String timeFormat = properties.getProperty(TIME_FORMAT).trim();
+ DateTimeFormatter timeFormatter = DateTimeFormatter.ofPattern(timeFormat);
+ datasetPartitionPattern = new Path(datasetPartitionPath,
+ partitionPrefix + derivePartitionPattern(timeFormat)).toString();
+ log.info("Dataset partition pattern is {}", datasetPartitionPattern);
+
+ ZonedDateTime curTime =
ZonedDateTime.now(ZoneId.of(properties.getProperty(TIME_ZONE,
DEFAULT_TIME_ZONE)));
+ yesterdayPartition = new Path(partitionPrefix +
timeFormatter.format(curTime.minusDays(1)));
+ log.info("Yesterday partition is {}", yesterdayPartition);
+
+ enableEmptyPartition =
Boolean.valueOf(properties.getProperty(ENABLE_EMPTY_PARTITION));
+
+ props = properties;
+ this.fs = fs;
+ }
+
+ /**
+ * Derive partition glob pattern from time format. For example:
+ * <p> given {@code timePattern=yyyy/MM/dd}, return '*'/'*'/'*' (adding
single quote to avoid breaking comments)
+ * <p> given {@code timePattern=yyyy-MM-dd}, return *
+ */
+ private String derivePartitionPattern(String timeFormat) {
+ String[] parts = timeFormat.split("/");
+ StringBuilder pattern = new StringBuilder("*");
+ for (int i = 1; i < parts.length; i++) {
+ pattern.append("/*");
+ }
+ return pattern.toString();
+ }
+
+ @Override
+ public List<FileSystemDataset> findDatasets()
+ throws IOException {
+ try {
+ return doFindDatasets();
+ } finally {
+ // Recover ConfigurableGlobDatasetFinder.DATASET_FINDER_PATTERN_KEY
config
+
this.props.setProperty(ConfigurableGlobDatasetFinder.DATASET_FINDER_PATTERN_KEY,
datasetPattern);
+ }
+ }
+
+ private List<FileSystemDataset> doFindDatasets() throws IOException {
+ if (!enableEmptyPartition) {
+ log.info("Will not create empty file system dataset");
+ return findDatasets(datasetPartitionPattern);
+ }
+
+ // Find datasets
+ List<FileSystemDataset> datasets = findDatasets(datasetPattern);
+ // Identify yesterday dataset partitions
+ Set<Path> yesterdayDatasetPartitions = new HashSet<>();
+ datasets.forEach(dataset ->
yesterdayDatasetPartitions.add(createYesterdayDatasetPartition(dataset)));
+
+ // Find all dataset time partitions
+ List<FileSystemDataset> datasetPartitions =
findDatasets(datasetPartitionPattern);
Review comment:
Could this code block be optimized to be a single expression like :
`datasetPartitions.addAll(yesterdaypartitions.stream().allMatch(x->!datasetPartitions.contains(x)).map(x
-> createEmptyFileDataset))` ?
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Issue Time Tracking
-------------------
Worklog Id: (was: 358857)
Time Spent: 1h 20m (was: 1h 10m)
> Implement TimePartitionGlobFinder
> ---------------------------------
>
> Key: GOBBLIN-1001
> URL: https://issues.apache.org/jira/browse/GOBBLIN-1001
> Project: Apache Gobblin
> Issue Type: Task
> Reporter: Zhixiong Chen
> Assignee: Zhixiong Chen
> Priority: Major
> Time Spent: 1h 20m
> Remaining Estimate: 0h
>
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