YARN-6509. Add a size threshold beyond which yarn logs will require a force option. (Xuan Gong via wangda)

Change-Id: I755fe903337d4ff9ec35dae5b9cce638794e1d0f
(cherry picked from commit ec2ae3060a)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/LogsCLI.java

@@ -29,9 +29,12 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.Collections;
+import java.util.HashMap;
 import java.util.HashSet;
+import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
+import java.util.Map.Entry;
 import java.util.Set;
 import java.util.TreeMap;
 import java.util.regex.Pattern;
@@ -107,6 +110,7 @@ public class LogsCLI extends Configured implements Tool {
   private static final String CLIENT_RETRY_INTERVAL_OPTION
       = "client_retry_interval_ms";
   public static final String HELP_CMD = "help";
+  private static final String SIZE_LIMIT_OPTION = "size_limit_mb";
 
   private PrintStream outStream = System.out;
   private YarnClient yarnClient = null;
@@ -115,6 +119,11 @@ public class LogsCLI extends Configured implements Tool {
   private static final int DEFAULT_MAX_RETRIES = 30;
   private static final long DEFAULT_RETRY_INTERVAL = 1000;
 
+  private static final long LOG_SIZE_LIMIT_DEFAULT = 10240L;
+
+  private long logSizeLeft = LOG_SIZE_LIMIT_DEFAULT * 1024 * 1024;
+  private long specifedLogLimits = LOG_SIZE_LIMIT_DEFAULT;
+
   @Private
   @VisibleForTesting
   ClientConnectionRetry connectionRetry;
@@ -158,6 +167,7 @@ public class LogsCLI extends Configured implements Tool {
     List<String> amContainersList = new ArrayList<String>();
     String localDir = null;
     long bytes = Long.MAX_VALUE;
+    boolean ignoreSizeLimit = false;
     int maxRetries = DEFAULT_MAX_RETRIES;
     long retryInterval = DEFAULT_RETRY_INTERVAL;
     try {
@@ -199,6 +209,14 @@ public class LogsCLI extends Configured implements Tool {
         retryInterval = Long.parseLong(commandLine.getOptionValue(
             CLIENT_RETRY_INTERVAL_OPTION));
       }
+      if (commandLine.hasOption(SIZE_LIMIT_OPTION)) {
+        specifedLogLimits = Long.parseLong(commandLine.getOptionValue(
+            SIZE_LIMIT_OPTION));
+        logSizeLeft = specifedLogLimits * 1024 * 1024;
+      }
+      if (logSizeLeft < 0L) {
+        ignoreSizeLimit = true;
+      }
     } catch (ParseException e) {
       System.err.println("options parsing failed: " + e.getMessage());
       printHelpMessage(printOpts);
@@ -306,6 +324,7 @@ public class LogsCLI extends Configured implements Tool {
       logs.addAll(Arrays.asList(logFilesRegex));
     }
 
+
     ContainerLogsRequest request = new ContainerLogsRequest(appId,
         isApplicationFinished(appState), appOwner, nodeAddress, null,
         containerIdStr, localDir, logs, bytes, null);
@@ -324,15 +343,17 @@ public class LogsCLI extends Configured implements Tool {
     // To get am logs
     if (getAMContainerLogs) {
       return fetchAMContainerLogs(request, amContainersList,
-          logCliHelper, useRegex);
+          logCliHelper, useRegex, ignoreSizeLimit);
     }
 
     int resultCode = 0;
     if (containerIdStr != null) {
-      return fetchContainerLogs(request, logCliHelper, useRegex);
+      return fetchContainerLogs(request, logCliHelper, useRegex,
+          ignoreSizeLimit);
     } else {
       if (nodeAddress == null) {
-        resultCode = fetchApplicationLogs(request, logCliHelper, useRegex);
+        resultCode = fetchApplicationLogs(request, logCliHelper, useRegex,
+            ignoreSizeLimit);
       } else {
         System.err.println("Should at least provide ContainerId!");
         printHelpMessage(printOpts);
@@ -524,35 +545,16 @@ public class LogsCLI extends Configured implements Tool {
   @VisibleForTesting
   public int printContainerLogsFromRunningApplication(Configuration conf,
       ContainerLogsRequest request, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws IOException {
+      boolean useRegex, boolean ignoreSizeLimit) throws IOException {
     String containerIdStr = request.getContainerId().toString();
     String localDir = request.getOutputLocalDir();
-    String nodeHttpAddress = request.getNodeHttpAddress();
-    if (nodeHttpAddress == null || nodeHttpAddress.isEmpty()) {
-      System.err.println("Can not get the logs for the container: "
-          + containerIdStr);
-      System.err.println("The node http address is required to get container "
-          + "logs for the Running application.");
-      return -1;
-    }
     String nodeId = request.getNodeId();
     PrintStream out = LogToolUtils.createPrintStream(localDir, nodeId,
         containerIdStr);
     try {
-      Set<String> matchedFiles = getMatchedContainerLogFiles(request,
-          useRegex);
-      if (matchedFiles.isEmpty()) {
-        System.err.println("Can not find any log file matching the pattern: "
-            + request.getLogTypes() + " for the container: " + containerIdStr
-            + " within the application: " + request.getAppId());
-        return -1;
-      }
-      ContainerLogsRequest newOptions = new ContainerLogsRequest(request);
-      newOptions.setLogTypes(matchedFiles);
-
       boolean foundAnyLogs = false;
       byte[] buffer = new byte[65536];
-      for (String logFile : newOptions.getLogTypes()) {
+      for (String logFile : request.getLogTypes()) {
         InputStream is = null;
         try {
           ClientResponse response = getResponeFromNMWebService(conf,
@@ -595,50 +597,6 @@ public class LogsCLI extends Configured implements Tool {
     }
   }
 
-  private int printContainerLogsForFinishedApplication(
-      ContainerLogsRequest request, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws IOException {
-    ContainerLogsRequest newOptions = getMatchedLogOptions(
-        request, logCliHelper, useRegex);
-    if (newOptions == null) {
-      System.err.println("Can not find any log file matching the pattern: "
-          + request.getLogTypes() + " for the container: "
-          + request.getContainerId() + " within the application: "
-          + request.getAppId());
-      return -1;
-    }
-    return logCliHelper.dumpAContainerLogsForLogType(newOptions);
-  }
-
-  private int printContainerLogsForFinishedApplicationWithoutNodeId(
-      ContainerLogsRequest request, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws IOException {
-    ContainerLogsRequest newOptions = getMatchedLogOptions(
-        request, logCliHelper, useRegex);
-    if (newOptions == null) {
-      System.err.println("Can not find any log file matching the pattern: "
-          + request.getLogTypes() + " for the container: "
-          + request.getContainerId() + " within the application: "
-          + request.getAppId());
-      return -1;
-    }
-    return logCliHelper.dumpAContainerLogsForLogTypeWithoutNodeId(
-        newOptions);
-  }
-
-  private int printAggregatedContainerLogs(ContainerLogsRequest request,
-      LogCLIHelpers logCliHelper, boolean useRegex) throws IOException {
-    return printContainerLogsForFinishedApplication(request,
-        logCliHelper, useRegex);
-  }
-
-  private int printAggregatedContainerLogsWithoutNodeId(
-      ContainerLogsRequest request, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws IOException {
-    return printContainerLogsForFinishedApplicationWithoutNodeId(request,
-        logCliHelper, useRegex);
-  }
-
   @Private
   @VisibleForTesting
   public ContainerReport getContainerReport(String containerIdStr)
@@ -655,7 +613,8 @@ public class LogsCLI extends Configured implements Tool {
 
   private int printAMContainerLogs(Configuration conf,
       ContainerLogsRequest request, List<String> amContainers,
-      LogCLIHelpers logCliHelper, boolean useRegex) throws Exception {
+      LogCLIHelpers logCliHelper, boolean useRegex, boolean ignoreSizeLimit)
+      throws Exception {
     List<JSONObject> amContainersList = null;
     List<ContainerLogsRequest> requests =
         new ArrayList<ContainerLogsRequest>();
@@ -717,10 +676,9 @@ public class LogsCLI extends Configured implements Tool {
       return -1;
     }
 
+    List<ContainerLogsRequest> candidates = new ArrayList<>();
     if (amContainers.contains("ALL")) {
-      for (ContainerLogsRequest amRequest : requests) {
+      candidates.addAll(requests);
-        outputAMContainerLogs(amRequest, conf, logCliHelper, useRegex);
-      }
       outStream.println();
       outStream.println("Specified ALL for -am option. "
           + "Printed logs for all am containers.");
@@ -728,12 +686,10 @@ public class LogsCLI extends Configured implements Tool {
       for (String amContainer : amContainers) {
         int amContainerId = Integer.parseInt(amContainer.trim());
         if (amContainerId == -1) {
-          outputAMContainerLogs(requests.get(requests.size() - 1), conf,
+          candidates.add(requests.get(requests.size() - 1));
-              logCliHelper, useRegex);
         } else {
           if (amContainerId <= requests.size()) {
-            outputAMContainerLogs(requests.get(amContainerId - 1), conf,
+            candidates.add(requests.get(amContainerId - 1));
-                logCliHelper, useRegex);
           } else {
             System.err.println(String.format("ERROR: Specified AM containerId"
                 + " (%s) exceeds the number of AM containers (%s).",
@@ -743,12 +699,25 @@ public class LogsCLI extends Configured implements Tool {
         }
       }
     }
+    Map<String, ContainerLogsRequest> newOptions = new HashMap<>();
+    if (request.isAppFinished()) {
+      newOptions = getMatchedLogTypesForFinishedApp(candidates,
+          logCliHelper, useRegex, ignoreSizeLimit);
+    } else {
+      newOptions = getMatchedLogTypesForRunningApp(candidates, useRegex,
+          ignoreSizeLimit);
+    }
+    for (Entry<String, ContainerLogsRequest> amRequest
+        : newOptions.entrySet()) {
+      outputAMContainerLogs(amRequest.getValue(), conf, logCliHelper,
+          useRegex, ignoreSizeLimit);
+    }
     return 0;
   }
 
   private void outputAMContainerLogs(ContainerLogsRequest request,
-      Configuration conf, LogCLIHelpers logCliHelper, boolean useRegex)
+      Configuration conf, LogCLIHelpers logCliHelper, boolean useRegex,
-      throws Exception {
+      boolean ignoreSizeLimit) throws Exception {
     String nodeHttpAddress = request.getNodeHttpAddress();
     String containerId = request.getContainerId();
     String nodeId = request.getNodeId();
@@ -756,11 +725,10 @@ public class LogsCLI extends Configured implements Tool {
     if (request.isAppFinished()) {
       if (containerId != null && !containerId.isEmpty()) {
         if (nodeId != null && !nodeId.isEmpty()) {
-          printContainerLogsForFinishedApplication(request,
+          logCliHelper.dumpAContainerLogsForLogType(request);
-              logCliHelper, useRegex);
         } else {
-          printContainerLogsForFinishedApplicationWithoutNodeId(
+          logCliHelper.dumpAContainerLogsForLogTypeWithoutNodeId(
-              request, logCliHelper, useRegex);
+              request);
         }
       }
     } else {
@@ -770,7 +738,7 @@ public class LogsCLI extends Configured implements Tool {
             .getContainerState();
         request.setContainerState(containerState);
         printContainerLogsFromRunningApplication(conf,
-            request, logCliHelper, useRegex);
+            request, logCliHelper, useRegex, ignoreSizeLimit);
       }
     }
   }
@@ -898,6 +866,13 @@ public class LogsCLI extends Configured implements Tool {
     opts.addOption(CLIENT_RETRY_INTERVAL_OPTION, true,
         "Work with --client_max_retries to create a retry client. "
         + "The default value is 1000.");
+    opts.addOption(SIZE_LIMIT_OPTION, true, "Use this option to limit "
+        + "the size of the total logs which could be fetched. "
+        + "By default, we only allow to fetch at most "
+        + LOG_SIZE_LIMIT_DEFAULT + " MB logs. If the total log size is "
+        + "larger than the specified number, the CLI would fail. "
+        + "The user could specify -1 to ignore the size limit "
+        + "and fetch all logs.");
     opts.getOption(APPLICATION_ID_OPTION).setArgName("Application ID");
     opts.getOption(CONTAINER_ID_OPTION).setArgName("Container ID");
     opts.getOption(NODE_ADDRESS_OPTION).setArgName("Node Address");
@@ -908,6 +883,7 @@ public class LogsCLI extends Configured implements Tool {
     opts.getOption(CLIENT_MAX_RETRY_OPTION).setArgName("Max Retries");
     opts.getOption(CLIENT_RETRY_INTERVAL_OPTION)
         .setArgName("Retry Interval");
+    opts.getOption(SIZE_LIMIT_OPTION).setArgName("Size Limit");
     return opts;
   }
 
@@ -933,6 +909,7 @@ public class LogsCLI extends Configured implements Tool {
         PER_CONTAINER_LOG_FILES_REGEX_OPTION));
     printOpts.addOption(commandOpts.getOption(CLIENT_MAX_RETRY_OPTION));
     printOpts.addOption(commandOpts.getOption(CLIENT_RETRY_INTERVAL_OPTION));
+    printOpts.addOption(commandOpts.getOption(SIZE_LIMIT_OPTION));
     return printOpts;
   }
 
@@ -969,15 +946,15 @@ public class LogsCLI extends Configured implements Tool {
 
   private int fetchAMContainerLogs(ContainerLogsRequest request,
       List<String> amContainersList, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws Exception {
+      boolean useRegex, boolean ignoreSizeLimit) throws Exception {
     return printAMContainerLogs(getConf(), request, amContainersList,
-        logCliHelper, useRegex);
+        logCliHelper, useRegex, ignoreSizeLimit);
   }
 
   private int fetchContainerLogs(ContainerLogsRequest request,
-      LogCLIHelpers logCliHelper, boolean useRegex) throws IOException,
+      LogCLIHelpers logCliHelper, boolean useRegex, boolean ignoreSizeLimit)
-      ClientHandlerException, UniformInterfaceException, JSONException {
+      throws IOException, ClientHandlerException, UniformInterfaceException,
-    int resultCode = 0;
+      JSONException {
     String appIdStr = request.getAppId().toString();
     String containerIdStr = request.getContainerId();
     String nodeAddress = request.getNodeId();
@@ -988,12 +965,20 @@ public class LogsCLI extends Configured implements Tool {
     if (isAppFinished) {
       // if user specified "ALL" as the logFiles param, pass empty list
       // to logCliHelper so that it fetches all the logs
+      ContainerLogsRequest newOptions = getMatchedLogOptions(
+          request, logCliHelper, useRegex, ignoreSizeLimit);
+      if (newOptions == null) {
+        System.err.println("Can not find any log file matching the pattern: "
+            + request.getLogTypes() + " for the container: "
+            + request.getContainerId() + " within the application: "
+            + request.getAppId());
+        return -1;
+      }
       if (nodeAddress != null && !nodeAddress.isEmpty()) {
-        return printContainerLogsForFinishedApplication(
+        return logCliHelper.dumpAContainerLogsForLogType(newOptions);
-            request, logCliHelper, useRegex);
       } else {
-        return printContainerLogsForFinishedApplicationWithoutNodeId(
+        return logCliHelper.dumpAContainerLogsForLogTypeWithoutNodeId(
-            request, logCliHelper, useRegex);
+            newOptions);
       }
     }
     String nodeHttpAddress = null;
@@ -1019,13 +1004,20 @@ public class LogsCLI extends Configured implements Tool {
       } else {
         // for the case, we have already uploaded partial logs in HDFS
         int result = -1;
-        if (nodeAddress != null && !nodeAddress.isEmpty()) {
+        ContainerLogsRequest newOptions = getMatchedLogOptions(
-          result = printAggregatedContainerLogs(request,
+                request, logCliHelper, useRegex, ignoreSizeLimit);
-              logCliHelper, useRegex);
+        if (newOptions == null) {
+          System.err.println("Can not find any log file matching the pattern: "
+              + request.getLogTypes() + " for the container: "
+              + request.getContainerId() + " within the application: "
+              + request.getAppId());
         } else {
-          result = printAggregatedContainerLogsWithoutNodeId(request,
+          if (nodeAddress != null && !nodeAddress.isEmpty()) {
-              logCliHelper,
+            result = logCliHelper.dumpAContainerLogsForLogType(newOptions);
-                  useRegex);
+          } else {
+            result = logCliHelper.dumpAContainerLogsForLogTypeWithoutNodeId(
+                newOptions);
+          }
         }
         if (result == -1) {
           System.err.println(
@@ -1043,14 +1035,18 @@ public class LogsCLI extends Configured implements Tool {
     // If the application is not in the final state,
     // we will provide the NodeHttpAddress and get the container logs
     // by calling NodeManager webservice.
-    resultCode = printContainerLogsFromRunningApplication(getConf(), request,
+    ContainerLogsRequest newRequest = getMatchedOptionForRunningApp(
-        logCliHelper, useRegex);
+        request, useRegex, ignoreSizeLimit);
-    return resultCode;
+    if (newRequest == null) {
+      return -1;
+    }
+    return printContainerLogsFromRunningApplication(getConf(), request,
+          logCliHelper, useRegex, ignoreSizeLimit);
   }
 
   private int fetchApplicationLogs(ContainerLogsRequest options,
-      LogCLIHelpers logCliHelper, boolean useRegex) throws IOException,
+      LogCLIHelpers logCliHelper, boolean useRegex, boolean ignoreSizeLimit)
-      YarnException {
+      throws IOException, YarnException {
     // If the application has finished, we would fetch the logs
     // from HDFS.
     // If the application is still running, we would get the full
@@ -1059,7 +1055,7 @@ public class LogsCLI extends Configured implements Tool {
     int resultCode = -1;
     if (options.isAppFinished()) {
       ContainerLogsRequest newOptions = getMatchedLogOptions(
-          options, logCliHelper, useRegex);
+          options, logCliHelper, useRegex, ignoreSizeLimit);
       if (newOptions == null) {
         System.err.println("Can not find any log file matching the pattern: "
             + options.getLogTypes() + " for the application: "
@@ -1071,9 +1067,17 @@ public class LogsCLI extends Configured implements Tool {
     } else {
       List<ContainerLogsRequest> containerLogRequests =
           getContainersLogRequestForRunningApplication(options);
-      for (ContainerLogsRequest container : containerLogRequests) {
+
+      // get all matched container log types and check the total log size.
+      Map<String, ContainerLogsRequest> matchedLogTypes =
+          getMatchedLogTypesForRunningApp(containerLogRequests,
+              useRegex, ignoreSizeLimit);
+
+      for (Entry<String, ContainerLogsRequest> container
+          : matchedLogTypes.entrySet()) {
         int result = printContainerLogsFromRunningApplication(getConf(),
-            container, logCliHelper, useRegex);
+            container.getValue(), logCliHelper,
+            useRegex, ignoreSizeLimit);
         if (result == 0) {
           resultCode = 0;
         }
@@ -1103,37 +1107,54 @@ public class LogsCLI extends Configured implements Tool {
 
   private ContainerLogsRequest getMatchedLogOptions(
       ContainerLogsRequest request, LogCLIHelpers logCliHelper,
-      boolean useRegex) throws IOException {
+      boolean useRegex, boolean ignoreSizeLimit) throws IOException {
     ContainerLogsRequest newOptions = new ContainerLogsRequest(request);
-    if (request.getLogTypes() != null && !request.getLogTypes().isEmpty()) {
+    Set<ContainerLogFileInfo> files = logCliHelper.listContainerLogs(
-      Set<String> matchedFiles = new HashSet<String>();
+        request);
-      if (!request.getLogTypes().contains("ALL")) {
+    Set<String> matchedFiles = getMatchedLogFiles(request, files,
-        Set<String> files = logCliHelper.listContainerLogs(request);
+        useRegex, ignoreSizeLimit);
-        matchedFiles = getMatchedLogFiles(request, files, useRegex);
+    if (matchedFiles.isEmpty()) {
-        if (matchedFiles.isEmpty()) {
+      return null;
-          return null;
+    } else {
-        }
-      }
       newOptions.setLogTypes(matchedFiles);
+      return newOptions;
     }
-    return newOptions;
   }
 
   private Set<String> getMatchedLogFiles(ContainerLogsRequest options,
-      Collection<String> candidate, boolean useRegex) throws IOException {
+      Collection<ContainerLogFileInfo> candidate, boolean useRegex,
+      boolean ignoreSizeLimit) throws IOException {
     Set<String> matchedFiles = new HashSet<String>();
     Set<String> filePattern = options.getLogTypes();
-    if (options.getLogTypes().contains("ALL")) {
+    long size = options.getBytes();
-      return new HashSet<String>(candidate);
+    boolean getAll = options.getLogTypes().contains("ALL");
-    }
+    Iterator<ContainerLogFileInfo> iterator = candidate.iterator();
-    for (String file : candidate) {
+    while(iterator.hasNext()) {
-      if (useRegex) {
+      boolean matchedFile = false;
-        if (isFileMatching(file, filePattern)) {
+      ContainerLogFileInfo logInfo = iterator.next();
-          matchedFiles.add(file);
+      if (getAll) {
+        matchedFile = true;
+      } else if (useRegex) {
+        if (isFileMatching(logInfo.getFileName(), filePattern)) {
+          matchedFile = true;
         }
       } else {
-        if (filePattern.contains(file)) {
+        if (filePattern.contains(logInfo.getFileName())) {
-          matchedFiles.add(file);
+          matchedFile = true;
+        }
+      }
+      if (matchedFile) {
+        matchedFiles.add(logInfo.getFileName());
+        if (!ignoreSizeLimit) {
+          decrLogSizeLimit(Math.min(
+              Long.parseLong(logInfo.getFileSize()), size));
+          if (getLogSizeLimitLeft() < 0) {
+            throw new RuntimeException("The total log size is too large."
+                + "The log size limit is " + specifedLogLimits + "MB. "
+                + "Please specify a proper value --size option or if you "
+                + "really want to fetch all, please "
+                + "specify -1 for --size_limit_mb option.");
+          }
         }
       }
     }
@@ -1296,18 +1317,19 @@ public class LogsCLI extends Configured implements Tool {
 
   @VisibleForTesting
   public Set<String> getMatchedContainerLogFiles(ContainerLogsRequest request,
-      boolean useRegex) throws IOException {
+      boolean useRegex, boolean ignoreSizeLimit) throws IOException {
     // fetch all the log files for the container
     // filter the log files based on the given -log_files pattern
     List<Pair<ContainerLogFileInfo, String>> allLogFileInfos=
         getContainerLogFiles(getConf(), request.getContainerId(),
             request.getNodeHttpAddress());
-    List<String> fileNames = new ArrayList<String>();
+    List<ContainerLogFileInfo> fileNames = new ArrayList<
+        ContainerLogFileInfo>();
     for (Pair<ContainerLogFileInfo, String> fileInfo : allLogFileInfos) {
-      fileNames.add(fileInfo.getKey().getFileName());
+      fileNames.add(fileInfo.getKey());
     }
     return getMatchedLogFiles(request, fileNames,
-        useRegex);
+        useRegex, ignoreSizeLimit);
   }
 
   @VisibleForTesting
@@ -1451,4 +1473,86 @@ public class LogsCLI extends Configured implements Tool {
     // The method to indicate if we should retry given the incoming exception
     public abstract boolean shouldRetryOn(Exception e);
   }
+
+  private long getLogSizeLimitLeft() {
+    return this.logSizeLeft;
+  }
+
+  private void decrLogSizeLimit(long used) {
+    this.logSizeLeft -= used;
+  }
+
+  @Private
+  @VisibleForTesting
+  public ContainerLogsRequest getMatchedOptionForRunningApp(
+      ContainerLogsRequest container, boolean useRegex,
+      boolean ignoreSizeLimit) throws IOException {
+    String containerIdStr = container.getContainerId().toString();
+    String nodeHttpAddress = container.getNodeHttpAddress();
+    if (nodeHttpAddress == null || nodeHttpAddress.isEmpty()) {
+      System.err.println("Can not get the logs for the container: "
+          + containerIdStr);
+      System.err.println("The node http address is required to get container "
+          + "logs for the Running application.");
+      return null;
+    }
+
+    Set<String> matchedFiles = getMatchedContainerLogFiles(container,
+        useRegex, ignoreSizeLimit);
+    if (matchedFiles.isEmpty()) {
+      System.err.println("Can not find any log file matching the pattern: "
+          + container.getLogTypes() + " for the container: " + containerIdStr
+          + " within the application: " + container.getAppId());
+      return null;
+    }
+    container.setLogTypes(matchedFiles);
+    return container;
+  }
+
+  @Private
+  @VisibleForTesting
+  public Map<String, ContainerLogsRequest> getMatchedLogTypesForRunningApp(
+      List<ContainerLogsRequest> containerLogRequests, boolean useRegex,
+      boolean ignoreSizeLimit) {
+    Map<String, ContainerLogsRequest> containerMatchedLog = new HashMap<>();
+    for (ContainerLogsRequest container : containerLogRequests) {
+      try {
+        ContainerLogsRequest request = getMatchedOptionForRunningApp(
+            container, useRegex, ignoreSizeLimit);
+        if (request == null) {
+          continue;
+        }
+        containerMatchedLog.put(container.getContainerId(), request);
+      } catch(IOException ex) {
+        System.err.println(ex);
+        continue;
+      }
+    }
+    return containerMatchedLog;
+  }
+
+  private Map<String, ContainerLogsRequest> getMatchedLogTypesForFinishedApp(
+      List<ContainerLogsRequest> containerLogRequests,
+      LogCLIHelpers logCliHelper, boolean useRegex,
+      boolean ignoreSizeLimit) {
+    Map<String, ContainerLogsRequest> containerMatchedLog = new HashMap<>();
+    for (ContainerLogsRequest container : containerLogRequests) {
+      try {
+        ContainerLogsRequest request = getMatchedLogOptions(container,
+            logCliHelper, useRegex, ignoreSizeLimit);
+        if (request == null) {
+          System.err.println("Can not find any log file matching the pattern: "
+              + container.getLogTypes() + " for the container: "
+              + container.getContainerId() + " within the application: "
+              + container.getAppId());
+          continue;
+        }
+        containerMatchedLog.put(container.getContainerId(), request);
+      } catch (IOException ex) {
+        System.err.println(ex);
+        continue;
+      }
+    }
+    return containerMatchedLog;
+  }
 }

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestLogsCLI.java

@@ -30,6 +30,7 @@ import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
 import static org.mockito.Mockito.times;
 import static org.mockito.Mockito.verify;
+import static org.mockito.Matchers.*;
 
 import com.sun.jersey.api.client.Client;
 import com.sun.jersey.api.client.ClientResponse;
@@ -300,6 +301,17 @@ public class TestLogsCLI {
     pw.println("                                              end and positive values as");
     pw.println("                                              bytes to read from the");
     pw.println("                                              beginning.");
+    pw.println(" -size_limit_mb <Size Limit>                  Use this option to limit the");
+    pw.println("                                              size of the total logs which");
+    pw.println("                                              could be fetched. By");
+    pw.println("                                              default, we only allow to");
+    pw.println("                                              fetch at most 10240 MB logs.");
+    pw.println("                                              If the total log size is");
+    pw.println("                                              larger than the specified");
+    pw.println("                                              number, the CLI would fail.");
+    pw.println("                                              The user could specify -1 to");
+    pw.println("                                              ignore the size limit and");
+    pw.println("                                              fetch all logs.");
     pw.close();
     String appReportStr = baos.toString("UTF-8");
     Assert.assertTrue(sysOutStream.toString().contains(appReportStr));
@@ -563,8 +575,7 @@ public class TestLogsCLI {
             containerId0.toString() });
     assertTrue(exitCode == -1);
     assertTrue(sysErrStream.toString().contains(
-      "Logs for container " + containerId0.toString()
+        "Can not find any log file matching the pattern"));
-          + " are not present in this log-file."));
     sysErrStream.reset();
 
     // uploaded two logs for container3. The first log is named as syslog.
@@ -750,7 +761,7 @@ public class TestLogsCLI {
       Set<String> logsSet = new HashSet<String>();
       logsSet.add(fileName);
       doReturn(logsSet).when(cli).getMatchedContainerLogFiles(
-          any(ContainerLogsRequest.class), anyBoolean());
+          any(ContainerLogsRequest.class), anyBoolean(), anyBoolean());
       ClientResponse mockReponse = mock(ClientResponse.class);
       doReturn(Status.OK).when(mockReponse).getStatusInfo();
       doReturn(fis).when(mockReponse).getEntityInputStream();
@@ -795,6 +806,7 @@ public class TestLogsCLI {
     doReturn(nodeId).when(mockContainerReport1).getAssignedNode();
     doReturn("http://localhost:2345").when(mockContainerReport1)
         .getNodeHttpAddress();
+
     ContainerId containerId2 = ContainerId.newContainerId(appAttemptId, 2);
     ContainerReport mockContainerReport2 = mock(ContainerReport.class);
     doReturn(containerId2).when(mockContainerReport2).getContainerId();
@@ -812,7 +824,19 @@ public class TestLogsCLI {
     LogsCLI cli = spy(new LogsCLIForTest(mockYarnClient));
     doReturn(0).when(cli).printContainerLogsFromRunningApplication(
         any(Configuration.class), any(ContainerLogsRequest.class),
-        any(LogCLIHelpers.class), anyBoolean());
+        any(LogCLIHelpers.class), anyBoolean(), anyBoolean());
+    Set<String> logTypes = new HashSet<>();
+    logTypes.add("ALL");
+    ContainerLogsRequest mockContainer1 = mock(ContainerLogsRequest.class);
+    doReturn(logTypes).when(mockContainer1).getLogTypes();
+    ContainerLogsRequest mockContainer2 = mock(ContainerLogsRequest.class);
+    doReturn(logTypes).when(mockContainer2).getLogTypes();
+    Map<String, ContainerLogsRequest> matchedLogTypes = new HashMap<>();
+    matchedLogTypes.put(containerId1.toString(), mockContainer1);
+    matchedLogTypes.put(containerId2.toString(), mockContainer2);
+    doReturn(matchedLogTypes).when(cli).getMatchedLogTypesForRunningApp(
+        anyListOf(ContainerLogsRequest.class), anyBoolean(),
+        anyBoolean());
 
     cli.setConf(new YarnConfiguration());
     int exitCode = cli.run(new String[] {"-applicationId", appId.toString()});
@@ -825,7 +849,7 @@ public class TestLogsCLI {
     // printContainerLogsFromRunningApplication twice
     verify(cli, times(2)).printContainerLogsFromRunningApplication(
         any(Configuration.class), logsRequestCaptor.capture(),
-        any(LogCLIHelpers.class), anyBoolean());
+        any(LogCLIHelpers.class), anyBoolean(), anyBoolean());
 
     // Verify that the log-type is "ALL"
     List<ContainerLogsRequest> capturedRequests =
@@ -839,9 +863,12 @@ public class TestLogsCLI {
     mockYarnClient = createMockYarnClientWithException(
         YarnApplicationState.RUNNING, ugi.getShortUserName());
     LogsCLI cli2 = spy(new LogsCLIForTest(mockYarnClient));
+    ContainerLogsRequest newOption = mock(ContainerLogsRequest.class);
+    doReturn(newOption).when(cli2).getMatchedOptionForRunningApp(
+        any(ContainerLogsRequest.class), anyBoolean(), anyBoolean());
     doReturn(0).when(cli2).printContainerLogsFromRunningApplication(
         any(Configuration.class), any(ContainerLogsRequest.class),
-        any(LogCLIHelpers.class), anyBoolean());
+        any(LogCLIHelpers.class), anyBoolean(), anyBoolean());
     doReturn("123").when(cli2).getNodeHttpAddressFromRMWebString(
         any(ContainerLogsRequest.class));
     cli2.setConf(new YarnConfiguration());
@@ -851,7 +878,7 @@ public class TestLogsCLI {
     assertTrue(exitCode == 0);
     verify(cli2, times(1)).printContainerLogsFromRunningApplication(
         any(Configuration.class), logsRequestCaptor.capture(),
-        any(LogCLIHelpers.class), anyBoolean());
+        any(LogCLIHelpers.class), anyBoolean(), anyBoolean());
   }
 
   @Test (timeout = 15000)

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/LogCLIHelpers.java

@@ -350,10 +350,10 @@ public class LogCLIHelpers implements Configurable {
   }
 
   @Private
-  public Set<String> listContainerLogs(ContainerLogsRequest options)
+  public Set<ContainerLogFileInfo> listContainerLogs(
-      throws IOException {
+      ContainerLogsRequest options) throws IOException {
     List<ContainerLogMeta> containersLogMeta;
-    Set<String> logTypes = new HashSet<String>();
+    Set<ContainerLogFileInfo> logTypes = new HashSet<ContainerLogFileInfo>();
     try {
       containersLogMeta = getFileController(options.getAppId(),
           options.getAppOwner()).readAggregatedLogsMeta(
@@ -364,7 +364,7 @@ public class LogCLIHelpers implements Configurable {
     }
     for (ContainerLogMeta logMeta: containersLogMeta) {
       for (ContainerLogFileInfo fileInfo : logMeta.getContainerLogMeta()) {
-        logTypes.add(fileInfo.getFileName());
+        logTypes.add(fileInfo);
       }
     }
     return logTypes;

hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/filecontroller/tfile/LogAggregationTFileController.java

@@ -268,6 +268,12 @@ public class LogAggregationTFileController
     }
     while (nodeFiles.hasNext()) {
       FileStatus thisNodeFile = nodeFiles.next();
+      if (thisNodeFile.getPath().getName().equals(appId + ".har")) {
+        Path p = new Path("har:///"
+            + thisNodeFile.getPath().toUri().getRawPath());
+        nodeFiles = HarFs.get(p.toUri(), conf).listStatusIterator(p);
+        continue;
+      }
       if (nodeIdStr != null) {
         if (!thisNodeFile.getPath().getName().contains(nodeIdStr)) {
           continue;