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The following commit(s) were added to refs/heads/branch-3.4.0 by this push:
new 92e59743c104 HADOOP-18883. [ABFS]: Expect-100 JDK bug resolution:
prevent multiple server calls (#6022)
92e59743c104 is described below
commit 92e59743c104970fe8878f925f65dffcf2eba092
Author: Pranav Saxena <108325433+saxenapra...@users.noreply.github.com>
AuthorDate: Tue Jan 30 05:17:04 2024 -0800
HADOOP-18883. [ABFS]: Expect-100 JDK bug resolution: prevent multiple
server calls (#6022)
Address JDK bug JDK-8314978 related to handling of HTTP 100
responses.
https://bugs.openjdk.org/browse/JDK-8314978
In the AbfsHttpOperation, after sendRequest() we call processResponse()
method from AbfsRestOperation.
Even if the conn.getOutputStream() fails due to expect-100 error,
we consume the exception and let the code go ahead.
This may call getHeaderField() / getHeaderFields() / getHeaderFieldLong()
after
getOutputStream() has failed. These invocation all lead to server calls.
This commit aims to prevent this.
If connection.getOutputStream() fails due to an Expect-100 error,
the ABFS client does not invoke getHeaderField(), getHeaderFields(),
getHeaderFieldLong() or getInputStream().
getResponseCode() is safe as on the failure it sets the
responseCode variable in HttpUrlConnection object.
Contributed by Pranav Saxena
---
.../fs/azurebfs/constants/AbfsHttpConstants.java | 1 +
.../fs/azurebfs/services/AbfsHttpOperation.java | 41 +++++++++++++--
.../fs/azurebfs/services/AbfsOutputStream.java | 9 +++-
.../fs/azurebfs/services/ITestAbfsClient.java | 3 +-
.../azurebfs/services/ITestAbfsOutputStream.java | 61 ++++++++++++++++++++++
.../azurebfs/services/ITestAbfsRestOperation.java | 3 +-
6 files changed, 109 insertions(+), 9 deletions(-)
diff --git
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java
index 91f6bddcc1d4..63de71eb178d 100644
---
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java
+++
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java
@@ -69,6 +69,7 @@ public final class AbfsHttpConstants {
* and should qualify for retry.
*/
public static final int HTTP_CONTINUE = 100;
+ public static final String EXPECT_100_JDK_ERROR = "Server rejected
operation";
// Abfs generic constants
public static final String SINGLE_WHITE_SPACE = " ";
diff --git
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsHttpOperation.java
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsHttpOperation.java
index 7f5df6066f1b..c0b554f60702 100644
---
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsHttpOperation.java
+++
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsHttpOperation.java
@@ -22,12 +22,14 @@ import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.HttpURLConnection;
+import java.net.ProtocolException;
import java.net.URL;
import java.util.List;
import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLSocketFactory;
+import org.apache.hadoop.classification.VisibleForTesting;
import org.apache.hadoop.fs.azurebfs.utils.UriUtils;
import org.apache.hadoop.security.ssl.DelegatingSSLSocketFactory;
@@ -43,6 +45,7 @@ import
org.apache.hadoop.fs.azurebfs.constants.HttpHeaderConfigurations;
import org.apache.hadoop.fs.azurebfs.contracts.services.AbfsPerfLoggable;
import org.apache.hadoop.fs.azurebfs.contracts.services.ListResultSchema;
+import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.EXPECT_100_JDK_ERROR;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HUNDRED_CONTINUE;
import static
org.apache.hadoop.fs.azurebfs.constants.HttpHeaderConfigurations.EXPECT;
@@ -83,6 +86,7 @@ public class AbfsHttpOperation implements AbfsPerfLoggable {
private long sendRequestTimeMs;
private long recvResponseTimeMs;
private boolean shouldMask = false;
+ private boolean connectionDisconnectedOnError = false;
public static AbfsHttpOperation getAbfsHttpOperationWithFixedResult(
final URL url,
@@ -324,14 +328,26 @@ public class AbfsHttpOperation implements
AbfsPerfLoggable {
*/
outputStream = getConnOutputStream();
} catch (IOException e) {
- /* If getOutputStream fails with an exception and expect header
- is enabled, we return back without throwing an exception to
- the caller. The caller is responsible for setting the correct
status code.
- If expect header is not enabled, we throw back the exception.
+ connectionDisconnectedOnError = true;
+ /* If getOutputStream fails with an expect-100 exception , we return
back
+ without throwing an exception to the caller. Else, we throw back
the exception.
*/
String expectHeader = getConnProperty(EXPECT);
- if (expectHeader != null && expectHeader.equals(HUNDRED_CONTINUE)) {
+ if (expectHeader != null && expectHeader.equals(HUNDRED_CONTINUE)
+ && e instanceof ProtocolException
+ && EXPECT_100_JDK_ERROR.equals(e.getMessage())) {
LOG.debug("Getting output stream failed with expect header enabled,
returning back ", e);
+ /*
+ * In case expect-100 assertion has failed, headers and inputStream
should not
+ * be parsed. Reason being, conn.getHeaderField(),
conn.getHeaderFields(),
+ * conn.getInputStream() will lead to repeated server call.
+ * ref: https://bugs.openjdk.org/browse/JDK-8314978.
+ * Reading conn.responseCode() and conn.getResponseMessage() is safe
in
+ * case of Expect-100 error. Reason being, in JDK, it stores the
responseCode
+ * in the HttpUrlConnection object before throwing exception to the
caller.
+ */
+ this.statusCode = getConnResponseCode();
+ this.statusDescription = getConnResponseMessage();
return;
} else {
LOG.debug("Getting output stream failed without expect header
enabled, throwing exception ", e);
@@ -364,7 +380,17 @@ public class AbfsHttpOperation implements AbfsPerfLoggable
{
* @throws IOException if an error occurs.
*/
public void processResponse(final byte[] buffer, final int offset, final int
length) throws IOException {
+ if (connectionDisconnectedOnError) {
+ LOG.debug("This connection was not successful or has been disconnected, "
+ + "hence not parsing headers and inputStream");
+ return;
+ }
+ processConnHeadersAndInputStreams(buffer, offset, length);
+ }
+ void processConnHeadersAndInputStreams(final byte[] buffer,
+ final int offset,
+ final int length) throws IOException {
// get the response
long startTime = 0;
startTime = System.nanoTime();
@@ -608,6 +634,11 @@ public class AbfsHttpOperation implements AbfsPerfLoggable
{
return connection.getResponseMessage();
}
+ @VisibleForTesting
+ Boolean getConnectionDisconnectedOnError() {
+ return connectionDisconnectedOnError;
+ }
+
public static class AbfsHttpOperationWithFixedResult extends
AbfsHttpOperation {
/**
* Creates an instance to represent fixed results.
diff --git
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsOutputStream.java
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsOutputStream.java
index 5780e290a078..74657c718a1b 100644
---
a/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsOutputStream.java
+++
b/hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsOutputStream.java
@@ -338,7 +338,7 @@ public class AbfsOutputStream extends OutputStream
implements Syncable,
*/
AppendRequestParameters reqParams = new AppendRequestParameters(
offset, 0, bytesLength, mode, false, leaseId,
isExpectHeaderEnabled);
- AbfsRestOperation op = client.append(path,
+ AbfsRestOperation op = getClient().append(path,
blockUploadData.toByteArray(), reqParams, cachedSasToken.get(),
contextEncryptionAdapter, new TracingContext(tracingContext));
cachedSasToken.update(op.getSasToken());
@@ -655,7 +655,7 @@ public class AbfsOutputStream extends OutputStream
implements Syncable,
AbfsPerfTracker tracker = client.getAbfsPerfTracker();
try (AbfsPerfInfo perfInfo = new AbfsPerfInfo(tracker,
"flushWrittenBytesToServiceInternal", "flush")) {
- AbfsRestOperation op = client.flush(path, offset, retainUncommitedData,
+ AbfsRestOperation op = getClient().flush(path, offset,
retainUncommitedData,
isClose, cachedSasToken.get(), leaseId, contextEncryptionAdapter,
new TracingContext(tracingContext));
cachedSasToken.update(op.getSasToken());
@@ -795,4 +795,9 @@ public class AbfsOutputStream extends OutputStream
implements Syncable,
ListeningExecutorService getExecutorService() {
return executorService;
}
+
+ @VisibleForTesting
+ AbfsClient getClient() {
+ return client;
+ }
}
diff --git
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsClient.java
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsClient.java
index 69bfe3d6f02b..2765582707a7 100644
---
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsClient.java
+++
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsClient.java
@@ -48,6 +48,7 @@ import
org.apache.hadoop.security.ssl.DelegatingSSLSocketFactory;
import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.APPEND_ACTION;
+import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.EXPECT_100_JDK_ERROR;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HTTP_METHOD_PATCH;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HTTP_METHOD_PUT;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HUNDRED_CONTINUE;
@@ -586,7 +587,7 @@ public final class ITestAbfsClient extends
AbstractAbfsIntegrationTest {
.getConnResponseMessage();
// Make the getOutputStream throw IOException to see it returns from the
sendRequest correctly.
- Mockito.doThrow(new ProtocolException("Server rejected Operation"))
+ Mockito.doThrow(new ProtocolException(EXPECT_100_JDK_ERROR))
.when(abfsHttpOperation)
.getConnOutputStream();
diff --git
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsOutputStream.java
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsOutputStream.java
index eee0c177c33b..359846ce14da 100644
---
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsOutputStream.java
+++
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsOutputStream.java
@@ -18,15 +18,19 @@
package org.apache.hadoop.fs.azurebfs.services;
+import java.io.FileNotFoundException;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
+import java.net.URL;
import org.assertj.core.api.Assertions;
import org.junit.Test;
+import org.mockito.Mockito;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FSDataOutputStream;
+import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.fs.PathIOException;
import org.apache.hadoop.fs.azurebfs.AbstractAbfsIntegrationTest;
@@ -34,6 +38,8 @@ import org.apache.hadoop.fs.azurebfs.AzureBlobFileSystem;
import org.apache.hadoop.fs.azurebfs.constants.ConfigurationKeys;
import org.apache.hadoop.test.LambdaTestUtils;
+import static
org.apache.hadoop.fs.azurebfs.constants.ConfigurationKeys.FS_AZURE_ACCOUNT_IS_EXPECT_HEADER_ENABLED;
+
/**
* Test create operation.
*/
@@ -148,6 +154,61 @@ public class ITestAbfsOutputStream extends
AbstractAbfsIntegrationTest {
}
}
+ @Test
+ public void testExpect100ContinueFailureInAppend() throws Exception {
+ Configuration configuration = new Configuration(getRawConfiguration());
+ configuration.set(FS_AZURE_ACCOUNT_IS_EXPECT_HEADER_ENABLED, "true");
+ AzureBlobFileSystem fs = (AzureBlobFileSystem) FileSystem.newInstance(
+ configuration);
+ Path path = new Path("/testFile");
+ AbfsOutputStream os = Mockito.spy(
+ (AbfsOutputStream) fs.create(path).getWrappedStream());
+ AbfsClient spiedClient = Mockito.spy(os.getClient());
+ AbfsHttpOperation[] httpOpForAppendTest = new AbfsHttpOperation[2];
+ mockSetupForAppend(httpOpForAppendTest, spiedClient);
+ Mockito.doReturn(spiedClient).when(os).getClient();
+ fs.delete(path, true);
+ os.write(1);
+ LambdaTestUtils.intercept(FileNotFoundException.class, () -> {
+ os.close();
+ });
+
Assertions.assertThat(httpOpForAppendTest[0].getConnectionDisconnectedOnError())
+ .describedAs("First try from AbfsClient will have expect-100 "
+ + "header and should fail with expect-100 error.").isTrue();
+ Mockito.verify(httpOpForAppendTest[0], Mockito.times(0))
+ .processConnHeadersAndInputStreams(Mockito.any(byte[].class),
+ Mockito.anyInt(), Mockito.anyInt());
+
+
Assertions.assertThat(httpOpForAppendTest[1].getConnectionDisconnectedOnError())
+ .describedAs("The retried operation from AbfsClient should not "
+ + "fail with expect-100 error. The retried operation does not have"
+ + "expect-100 header.").isFalse();
+ Mockito.verify(httpOpForAppendTest[1], Mockito.times(1))
+ .processConnHeadersAndInputStreams(Mockito.any(byte[].class),
+ Mockito.anyInt(), Mockito.anyInt());
+ }
+
+ private void mockSetupForAppend(final AbfsHttpOperation[]
httpOpForAppendTest,
+ final AbfsClient spiedClient) {
+ int[] index = new int[1];
+ index[0] = 0;
+ Mockito.doAnswer(abfsRestOpAppendGetInvocation -> {
+ AbfsRestOperation op = Mockito.spy(
+ (AbfsRestOperation)
abfsRestOpAppendGetInvocation.callRealMethod());
+ Mockito.doAnswer(createHttpOpInvocation -> {
+ httpOpForAppendTest[index[0]] = Mockito.spy(
+ (AbfsHttpOperation) createHttpOpInvocation.callRealMethod());
+ return httpOpForAppendTest[index[0]++];
+ }).when(op).createHttpOperation();
+ return op;
+ })
+ .when(spiedClient)
+ .getAbfsRestOperation(Mockito.any(AbfsRestOperationType.class),
+ Mockito.anyString(), Mockito.any(
+ URL.class), Mockito.anyList(), Mockito.any(byte[].class),
+ Mockito.anyInt(), Mockito.anyInt(),
Mockito.nullable(String.class));
+ }
+
/**
* Separate method to create an outputStream using a local FS instance so
* that once this method has returned, the FS instance can be eligible for
GC.
diff --git
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsRestOperation.java
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsRestOperation.java
index 6574a808f92b..16a47d15f523 100644
---
a/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsRestOperation.java
+++
b/hadoop-tools/hadoop-azure/src/test/java/org/apache/hadoop/fs/azurebfs/services/ITestAbfsRestOperation.java
@@ -49,6 +49,7 @@ import static java.net.HttpURLConnection.HTTP_NOT_FOUND;
import static java.net.HttpURLConnection.HTTP_OK;
import static java.net.HttpURLConnection.HTTP_UNAVAILABLE;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.APPEND_ACTION;
+import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.EXPECT_100_JDK_ERROR;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HTTP_METHOD_PATCH;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HTTP_METHOD_PUT;
import static
org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HUNDRED_CONTINUE;
@@ -232,7 +233,7 @@ public class ITestAbfsRestOperation extends
AbstractAbfsIntegrationTest {
Mockito.doReturn(responseMessage)
.when(abfsHttpOperation)
.getConnResponseMessage();
- Mockito.doThrow(new ProtocolException("Server rejected Operation"))
+ Mockito.doThrow(new ProtocolException(EXPECT_100_JDK_ERROR))
.when(abfsHttpOperation)
.getConnOutputStream();
break;
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