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https://issues.apache.org/jira/browse/HADOOP-17428?focusedWorklogId=642536&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-642536
]
ASF GitHub Bot logged work on HADOOP-17428:
-------------------------------------------
Author: ASF GitHub Bot
Created on: 26/Aug/21 19:05
Start Date: 26/Aug/21 19:05
Worklog Time Spent: 10m
Work Description: sumangala-patki commented on a change in pull request
#2549:
URL: https://github.com/apache/hadoop/pull/2549#discussion_r696904612
##########
File path:
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/ContentSummaryProcessor.java
##########
@@ -0,0 +1,147 @@
+/**
+ * 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.fs.azurebfs.services;
+
+import java.io.IOException;
+import java.util.concurrent.CompletionService;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.ExecutorCompletionService;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.SynchronousQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicInteger;
+import java.util.concurrent.atomic.AtomicLong;
+
+import org.apache.hadoop.fs.azurebfs.utils.TracingContext;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import org.apache.hadoop.fs.ContentSummary;
+import org.apache.hadoop.fs.FileStatus;
+import org.apache.hadoop.fs.Path;
+
+public class ContentSummaryProcessor {
+ private static final int CORE_POOL_SIZE = 1;
+ private static final int MAX_THREAD_COUNT = 16;
+ private static final int KEEP_ALIVE_TIME = 5;
+ private static final int POLL_TIMEOUT = 100;
+ private static final Logger LOG =
LoggerFactory.getLogger(ContentSummaryProcessor.class);
+ private final AtomicLong fileCount = new AtomicLong(0L);
+ private final AtomicLong directoryCount = new AtomicLong(0L);
+ private final AtomicLong totalBytes = new AtomicLong(0L);
+ private final AtomicInteger numTasks = new AtomicInteger(0);
+ private final ListingSupport abfsStore;
+ private final ExecutorService executorService = new ThreadPoolExecutor(
+ CORE_POOL_SIZE, MAX_THREAD_COUNT, KEEP_ALIVE_TIME, TimeUnit.SECONDS,
+ new SynchronousQueue<>());
+ private final CompletionService<Void> completionService =
+ new ExecutorCompletionService<>(executorService);
+ private final LinkedBlockingQueue<FileStatus> queue = new
LinkedBlockingQueue<>();
+
+ /**
+ * Processes a given path for count of subdirectories, files and total number
+ * of bytes
+ * @param abfsStore Instance of AzureBlobFileSystemStore, used to make
+ * listStatus calls to server
+ */
+ public ContentSummaryProcessor(ListingSupport abfsStore) {
+ this.abfsStore = abfsStore;
+ }
+
+ public ContentSummary getContentSummary(Path path, TracingContext
tracingContext)
+ throws IOException, ExecutionException, InterruptedException {
+ try {
+ processDirectoryTree(path, tracingContext);
+ while (!queue.isEmpty() || numTasks.get() > 0) {
+ try {
+ completionService.take().get();
+ } finally {
+ numTasks.decrementAndGet();
+ LOG.debug("FileStatus queue size = {}, number of submitted
unfinished tasks = {}, active thread count = {}",
+ queue.size(), numTasks, ((ThreadPoolExecutor)
executorService).getActiveCount());
+ }
+ }
+ } finally {
+ executorService.shutdownNow();
+ LOG.debug("Executor shutdown");
+ }
+ LOG.debug("Processed content summary of subtree under given path");
+ ContentSummary.Builder builder = new ContentSummary.Builder()
+ .directoryCount(directoryCount.get()).fileCount(fileCount.get())
+ .length(totalBytes.get()).spaceConsumed(totalBytes.get());
+ return builder.build();
+ }
+
+ /**
+ * Calls listStatus on given path and populated fileStatus queue with
+ * subdirectories. Is called by new tasks to process the complete subtree
+ * under a given path
+ * @param path: Path to a file or directory
+ * @throws IOException: listStatus error
+ * @throws InterruptedException: error while inserting into queue
+ */
+ private void processDirectoryTree(Path path, TracingContext tracingContext)
+ throws IOException, InterruptedException {
+ FileStatus[] fileStatuses = abfsStore.listStatus(path, tracingContext);
+
+ for (FileStatus fileStatus : fileStatuses) {
Review comment:
yes, we should be able to incorporate that using the listiterator.
Thanks, will make the change
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Issue Time Tracking
-------------------
Worklog Id: (was: 642536)
Time Spent: 1h 50m (was: 1h 40m)
> ABFS: Implementation for getContentSummary
> ------------------------------------------
>
> Key: HADOOP-17428
> URL: https://issues.apache.org/jira/browse/HADOOP-17428
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: fs/azure
> Affects Versions: 3.3.0
> Reporter: Sumangala Patki
> Assignee: Sumangala Patki
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h 50m
> Remaining Estimate: 0h
>
> Adds implementation for HDFS method getContentSummary, which takes in a Path
> argument and returns details such as file/directory count and space utilized
> under that path.
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