HADOOP-18606. Add reason in in x-ms-client-request-id on a retry API call.

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/constants/AbfsHttpConstants.java

@@ -111,6 +111,17 @@ public final class AbfsHttpConstants {
   public static final char CHAR_EQUALS = '=';
   public static final char CHAR_STAR = '*';
   public static final char CHAR_PLUS = '+';
+  /**
+   * Value that differentiates categories of the http_status.
+   * <pre>
+   * 100 - 199 : Informational responses
+   * 200 - 299 : Successful responses
+   * 300 - 399 : Redirection messages
+   * 400 - 499 : Client error responses
+   * 500 - 599 : Server error responses
+   * </pre>
+   */
+  public static final Integer HTTP_STATUS_CATEGORY_QUOTIENT = 100;
 
   private AbfsHttpConstants() {}
 }

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/contracts/services/AzureServiceErrorCode.java

@@ -66,6 +66,10 @@ public String getErrorCode() {
     return this.errorCode;
   }
 
+  public String getErrorMessage() {
+    return this.errorMessage;
+  }
+
   public static List<AzureServiceErrorCode> getAzureServiceCode(int httpStatusCode) {
     List<AzureServiceErrorCode> errorCodes = new ArrayList<>();
     if (httpStatusCode == UNKNOWN.httpStatusCode) {

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/AbfsRestOperation.java

@@ -28,6 +28,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import org.apache.hadoop.classification.VisibleForTesting;
 import org.apache.hadoop.fs.azurebfs.AbfsStatistic;
 import org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants;
 import org.apache.hadoop.fs.azurebfs.contracts.exceptions.AbfsRestOperationException;
@@ -73,6 +74,12 @@ public class AbfsRestOperation {
   private AbfsHttpOperation result;
   private AbfsCounters abfsCounters;
 
+  /**
+   * This variable contains the reason of last API call within the same
+   * AbfsRestOperation object.
+   */
+  private String failureReason;
+
   /**
    * Checks if there is non-null HTTP response.
    * @return true if there is a non-null HTTP response from the ABFS call.
@@ -208,7 +215,7 @@ public void execute(TracingContext tracingContext)
   private void completeExecute(TracingContext tracingContext)
       throws AzureBlobFileSystemException {
     // see if we have latency reports from the previous requests
-    String latencyHeader = this.client.getAbfsPerfTracker().getClientLatency();
+    String latencyHeader = getClientLatency();
     if (latencyHeader != null && !latencyHeader.isEmpty()) {
       AbfsHttpHeader httpHeader =
               new AbfsHttpHeader(HttpHeaderConfigurations.X_MS_ABFS_CLIENT_LATENCY, latencyHeader);
@@ -237,6 +244,11 @@ private void completeExecute(TracingContext tracingContext)
     LOG.trace("{} REST operation complete", operationType);
   }
 
+  @VisibleForTesting
+  String getClientLatency() {
+    return client.getAbfsPerfTracker().getClientLatency();
+  }
+
   /**
    * Executes a single HTTP operation to complete the REST operation.  If it
    * fails, there may be a retry.  The retryCount is incremented with each
@@ -248,9 +260,9 @@ private boolean executeHttpOperation(final int retryCount,
 
     try {
       // initialize the HTTP request and open the connection
-      httpOperation = new AbfsHttpOperation(url, method, requestHeaders);
+      httpOperation = createHttpOperation();
       incrementCounter(AbfsStatistic.CONNECTIONS_MADE, 1);
-      tracingContext.constructHeader(httpOperation);
+      tracingContext.constructHeader(httpOperation, failureReason);
 
       switch(client.getAuthType()) {
         case Custom:
@@ -303,6 +315,7 @@ private boolean executeHttpOperation(final int retryCount,
     } catch (UnknownHostException ex) {
       String hostname = null;
       hostname = httpOperation.getHost();
+      failureReason = RetryReason.getAbbreviation(ex, null, null);
       LOG.warn("Unknown host name: {}. Retrying to resolve the host name...",
           hostname);
       if (!client.getRetryPolicy().shouldRetry(retryCount, -1)) {
@@ -314,6 +327,8 @@ private boolean executeHttpOperation(final int retryCount,
         LOG.debug("HttpRequestFailure: {}, {}", httpOperation, ex);
       }
 
+      failureReason = RetryReason.getAbbreviation(ex, -1, "");
+
       if (!client.getRetryPolicy().shouldRetry(retryCount, -1)) {
         throw new InvalidAbfsRestOperationException(ex);
       }
@@ -326,6 +341,8 @@ private boolean executeHttpOperation(final int retryCount,
     LOG.debug("HttpRequest: {}: {}", operationType, httpOperation);
 
     if (client.getRetryPolicy().shouldRetry(retryCount, httpOperation.getStatusCode())) {
+      int status = httpOperation.getStatusCode();
+      failureReason = RetryReason.getAbbreviation(null, status, httpOperation.getStorageErrorMessage());
       return false;
     }
 
@@ -334,6 +351,15 @@ private boolean executeHttpOperation(final int retryCount,
     return true;
   }
 
+  /**
+   * Creates new object of {@link AbfsHttpOperation} with the url, method, and
+   * requestHeaders fields of the AbfsRestOperation object.
+   */
+  @VisibleForTesting
+  AbfsHttpOperation createHttpOperation() throws IOException {
+    return new AbfsHttpOperation(url, method, requestHeaders);
+  }
+
   /**
    * Incrementing Abfs counters with a long value.
    *

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/RetryReason.java

@@ -0,0 +1,102 @@
+/**
+ * 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.util.LinkedList;
+import java.util.List;
+
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.ClientErrorRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.ConnectionResetRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.ConnectionTimeoutRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.ReadTimeoutRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.RetryReasonCategory;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.ServerErrorRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.UnknownHostRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.UnknownIOExceptionRetryReason;
+import org.apache.hadoop.fs.azurebfs.services.retryReasonCategories.UnknownSocketExceptionRetryReason;
+
+
+/**
+ * This utility class exposes methods to convert a server response-error to a
+ * category of error.
+ */
+final class RetryReason {
+
+  /**
+   * Linked-list of the implementations of RetryReasonCategory. The objects in the
+   * list are arranged by the rank of their significance.
+   * <ul>
+   *   <li>ServerError (statusCode==5XX), ClientError (statusCode==4XX) are
+   *   independent of other retryReason categories.</li>
+   *   <li>Since {@link java.net.SocketException} is subclass of
+   *   {@link java.io.IOException},
+   *   hence, {@link UnknownIOExceptionRetryReason} is placed before
+   *   {@link UnknownSocketExceptionRetryReason}</li>
+   *   <li>Since, connectionTimeout, readTimeout, and connectionReset are
+   *   {@link java.net.SocketTimeoutException} exceptions with different messages,
+   *   hence, {@link ConnectionTimeoutRetryReason}, {@link ReadTimeoutRetryReason},
+   *   {@link ConnectionResetRetryReason} are above {@link UnknownIOExceptionRetryReason}.
+   *   There is no order between the three reasons as they are differentiated
+   *   by exception-message.</li>
+   *   <li>Since, {@link java.net.UnknownHostException} is subclass of
+   *   {@link java.io.IOException}, {@link UnknownHostRetryReason} is placed
+   *   over {@link UnknownIOExceptionRetryReason}</li>
+   * </ul>
+   */
+  private static List<RetryReasonCategory> rankedReasonCategories
+      = new LinkedList<RetryReasonCategory>() {{
+    add(new ServerErrorRetryReason());
+    add(new ClientErrorRetryReason());
+    add(new UnknownIOExceptionRetryReason());
+    add(new UnknownSocketExceptionRetryReason());
+    add(new ConnectionTimeoutRetryReason());
+    add(new ReadTimeoutRetryReason());
+    add(new UnknownHostRetryReason());
+    add(new ConnectionResetRetryReason());
+  }};
+
+  private RetryReason() {
+
+  }
+
+  /**
+   * Method to get correct abbreviation for a given set of exception, statusCode,
+   * storageStatusCode.
+   *
+   * @param ex exception caught during server communication.
+   * @param statusCode statusCode in the server response.
+   * @param storageErrorMessage storageErrorMessage in the server response.
+   *
+   * @return abbreviation for the the given set of exception, statusCode, storageStatusCode.
+   */
+  static String getAbbreviation(Exception ex,
+      Integer statusCode,
+      String storageErrorMessage) {
+    String result = null;
+    for (RetryReasonCategory retryReasonCategory : rankedReasonCategories) {
+      final String abbreviation
+          = retryReasonCategory.captureAndGetAbbreviation(ex,
+          statusCode, storageErrorMessage);
+      if (abbreviation != null) {
+        result = abbreviation;
+      }
+    }
+    return result;
+  }
+}

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/RetryReasonConstants.java

@@ -0,0 +1,39 @@
+/**
+ * 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;
+
+public final class RetryReasonConstants {
+
+  private RetryReasonConstants() {
+
+  }
+  public static final String CONNECTION_TIMEOUT_JDK_MESSAGE = "connect timed out";
+  public static final String READ_TIMEOUT_JDK_MESSAGE = "Read timed out";
+  public static final String CONNECTION_RESET_MESSAGE = "Connection reset";
+  public static final String OPERATION_BREACH_MESSAGE = "Operations per second is over the account limit.";
+  public static final String CONNECTION_RESET_ABBREVIATION = "CR";
+  public static final String CONNECTION_TIMEOUT_ABBREVIATION = "CT";
+  public static final String READ_TIMEOUT_ABBREVIATION = "RT";
+  public static final String INGRESS_LIMIT_BREACH_ABBREVIATION = "ING";
+  public static final String EGRESS_LIMIT_BREACH_ABBREVIATION = "EGR";
+  public static final String OPERATION_LIMIT_BREACH_ABBREVIATION = "OPR";
+  public static final String UNKNOWN_HOST_EXCEPTION_ABBREVIATION = "UH";
+  public static final String IO_EXCEPTION_ABBREVIATION = "IOE";
+  public static final String SOCKET_EXCEPTION_ABBREVIATION = "SE";
+}

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/retryReasonCategories/ClientErrorRetryReason.java

@@ -0,0 +1,43 @@
+/**
+ * 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.retryReasonCategories;
+
+import static org.apache.hadoop.fs.azurebfs.constants.AbfsHttpConstants.HTTP_STATUS_CATEGORY_QUOTIENT;
+
+/**
+ * Category that can capture server-response errors for 4XX status-code.
+ */
+public class ClientErrorRetryReason extends RetryReasonCategory {
+
+  @Override
+  Boolean canCapture(final Exception ex,
+      final Integer statusCode,
+      final String serverErrorMessage) {
+    if (statusCode == null || statusCode / HTTP_STATUS_CATEGORY_QUOTIENT != 4) {
+      return false;
+    }
+    return true;
+  }
+
+  @Override
+  String getAbbreviation(final Integer statusCode,
+      final String serverErrorMessage) {
+    return statusCode + "";
+  }
+}

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/retryReasonCategories/ConnectionResetRetryReason.java

@@ -0,0 +1,42 @@
+/**
+ * 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.retryReasonCategories;
+
+import static org.apache.hadoop.fs.azurebfs.services.RetryReasonConstants.CONNECTION_RESET_ABBREVIATION;
+import static org.apache.hadoop.fs.azurebfs.services.RetryReasonConstants.CONNECTION_RESET_MESSAGE;
+
+/**
+ * Category that can capture server-response errors for connection-reset exception.
+ */
+public class ConnectionResetRetryReason extends
+    RetryReasonCategory {
+
+  @Override
+  Boolean canCapture(final Exception ex,
+      final Integer statusCode,
+      final String serverErrorMessage) {
+    return checkExceptionMessage(ex, CONNECTION_RESET_MESSAGE);
+  }
+
+  @Override
+  String getAbbreviation(final Integer statusCode,
+      final String serverErrorMessage) {
+    return CONNECTION_RESET_ABBREVIATION;
+  }
+}

hadoop-tools/hadoop-azure/src/main/java/org/apache/hadoop/fs/azurebfs/services/retryReasonCategories/ConnectionTimeoutRetryReason.java

@@ -0,0 +1,43 @@
+/**
+ * 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.retryReasonCategories;
+
+
+import static org.apache.hadoop.fs.azurebfs.services.RetryReasonConstants.CONNECTION_TIMEOUT_ABBREVIATION;
+import static org.apache.hadoop.fs.azurebfs.services.RetryReasonConstants.CONNECTION_TIMEOUT_JDK_MESSAGE;
+
+/**
+ * Category that can capture server-response errors for connection-timeout.
+ */
+public class ConnectionTimeoutRetryReason extends
+    RetryReasonCategory {
+
+  @Override
+  String getAbbreviation(final Integer statusCode,
+      final String serverErrorMessage) {
+    return CONNECTION_TIMEOUT_ABBREVIATION;
+  }
+
+  @Override
+  Boolean canCapture(final Exception ex,
+      final Integer statusCode,
+      final String serverErrorMessage) {
+    return checkExceptionMessage(ex, CONNECTION_TIMEOUT_JDK_MESSAGE);
+  }
+}