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HADOOP-17422: ABFS: Set default ListMaxResults to max server limit (#2535) 

Contributed by Sumangala Patki

TEST RESULTS:

namespace.enabled=true
auth.type=SharedKey
-------------------
$mvn -T 1C -Dparallel-tests=abfs -Dscale -DtestsThreadCount=8 clean verify
Tests run: 90, Failures: 0, Errors: 0, Skipped: 0
Tests run: 462, Failures: 0, Errors: 0, Skipped: 24
Tests run: 208, Failures: 0, Errors: 0, Skipped: 24

namespace.enabled=true
auth.type=OAuth
-------------------
$mvn -T 1C -Dparallel-tests=abfs -Dscale -DtestsThreadCount=8 clean verify
Tests run: 90, Failures: 0, Errors: 0, Skipped: 0
Tests run: 462, Failures: 0, Errors: 0, Skipped: 70
Tests run: 208, Failures: 0, Errors: 0, Skipped: 141

(cherry picked from commit a35fc3871b)
This commit is contained in:
Sumangala 2020-12-09 15:35:03 +05:30 committed by Steve Loughran
parent d3caa1552b
commit 5f312a0d85
3 changed files with 9 additions and 3 deletions
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2
hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/FileSystemConfigurations.java
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@ -63,7 +63,7 @@ public final class FileSystemConfigurations {
public static final int MAX_BUFFER_SIZE = 100 * ONE_MB; // 100 MB
public static final long MAX_AZURE_BLOCK_SIZE = 256 * 1024 * 1024L; // changing default abfs blocksize to 256MB
public static final String AZURE_BLOCK_LOCATION_HOST_DEFAULT = "localhost";
public static final int DEFAULT_AZURE_LIST_MAX_RESULTS = 500;
public static final int DEFAULT_AZURE_LIST_MAX_RESULTS = 5000;
public static final int MAX_CONCURRENT_READ_THREADS = 12;
public static final int MAX_CONCURRENT_WRITE_THREADS = 8;

2
hadoop-tools/hadoop-azure/src/site/markdown/abfs.md
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@ -848,7 +848,7 @@ Please refer the following links for further information.
listStatus API fetches the FileStatus information from server in a page by page
manner. The config `fs.azure.list.max.results` used to set the maxResults URI
param which sets the pagesize(maximum results per call). The value should
be > 0. By default this will be 500. Server has a maximum value for this
be > 0. By default this will be 5000. Server has a maximum value for this
parameter as 5000. So even if the config is above 5000 the response will only
contain 5000 entries. Please refer the following link for further information.
https://docs.microsoft.com/en-us/rest/api/storageservices/datalakestoragegen2/path/list

8
hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/ITestAzureBlobFileSystemListStatus.java
View File

@ -29,12 +29,15 @@ import java.util.concurrent.Future;
import org.junit.Test;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.FSDataOutputStream;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.LocatedFileStatus;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.contract.ContractTestUtils;
import static org.apache.hadoop.fs.azurebfs.constants.ConfigurationKeys.AZURE_LIST_MAX_RESULTS;
import static org.apache.hadoop.fs.contract.ContractTestUtils.assertMkdirs;
import static org.apache.hadoop.fs.contract.ContractTestUtils.createFile;
import static org.apache.hadoop.fs.contract.ContractTestUtils.assertPathExists;
@ -55,7 +58,10 @@ public class ITestAzureBlobFileSystemListStatus extends
@Test
public void testListPath() throws Exception {
final AzureBlobFileSystem fs = getFileSystem();
Configuration config = new Configuration(this.getRawConfiguration());
config.set(AZURE_LIST_MAX_RESULTS, "5000");
final AzureBlobFileSystem fs = (AzureBlobFileSystem) FileSystem
.newInstance(getFileSystem().getUri(), config);
final List<Future<Void>> tasks = new ArrayList<>();
ExecutorService es = Executors.newFixedThreadPool(10);