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YARN-4309. Add container launch related debug information to container logs when a container fails. (Varun Vasudev via wangda)

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This commit is contained in:
Wangda Tan 2015-12-14 11:13:22 -08:00
parent e534569814
commit dfcbbddb09
7 changed files with 217 additions and 14 deletions
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3
hadoop-yarn-project/CHANGES.txt
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@ -613,6 +613,9 @@ Release 2.8.0 - UNRELEASED
YARN-3946. Update exact reason as to why a submitted app is in ACCEPTED state to
app's diagnostic message. (Naganarasimha G R via wangda)
YARN-4309. Add container launch related debug information to container logs
when a container fails. (Varun Vasudev via wangda)
OPTIMIZATIONS
YARN-3339. TestDockerContainerExecutor should pull a single image and not

5
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-api/src/main/java/org/apache/hadoop/yarn/conf/YarnConfiguration.java
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@ -92,6 +92,11 @@ private static void addDeprecatedKeys() {
/** Delay before deleting resource to ease debugging of NM issues */
public static final String DEBUG_NM_DELETE_DELAY_SEC =
YarnConfiguration.NM_PREFIX + "delete.debug-delay-sec";
public static final String NM_LOG_CONTAINER_DEBUG_INFO =
YarnConfiguration.NM_PREFIX + "log-container-debug-info.enabled";
public static final boolean DEFAULT_NM_LOG_CONTAINER_DEBUG_INFO = false;
////////////////////////////////
// IPC Configs

12
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/resources/yarn-default.xml
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@ -1127,6 +1127,18 @@
<value>logs</value>
</property>
<property>
<description>Generate additional logs about container launches.
Currently, this creates a copy of the launch script and lists the
directory contents of the container work dir. When listing directory
contents, we follow symlinks to a max-depth of 5(including symlinks
which point to outside the container work dir) which may lead to a
slowness in launching containers.
</description>
<name>yarn.nodemanager.log-container-debug-info.enabled</name>
<value>false</value>
</property>
<property>
<description>Amount of physical memory, in MB, that can be allocated
for containers. If set to -1 and

24
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/ContainerExecutor.java
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@ -34,6 +34,7 @@
import java.util.concurrent.locks.ReentrantReadWriteLock.ReadLock;
import java.util.concurrent.locks.ReentrantReadWriteLock.WriteLock;
import com.google.common.annotations.VisibleForTesting;
import org.apache.commons.io.FileUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
@ -65,6 +66,8 @@ public abstract class ContainerExecutor implements Configurable {
final public static FsPermission TASK_LAUNCH_SCRIPT_PERMISSION =
FsPermission.createImmutable((short) 0700);
public static final String DIRECTORY_CONTENTS = "directory.info";
private Configuration conf;
private ConcurrentMap<ContainerId, Path> pidFiles =
@ -241,11 +244,22 @@ public int reacquireContainer(ContainerReacquisitionContext ctx)
* @param resources The resources which have been localized for this container
* Symlinks will be created to these localized resources
* @param command The command that will be run.
* @param logDir The log dir to copy debugging information to
* @throws IOException if any errors happened writing to the OutputStream,
* while creating symlinks
*/
public void writeLaunchEnv(OutputStream out, Map<String, String> environment,
Map<Path, List<String>> resources, List<String> command) throws IOException{
Map<Path, List<String>> resources, List<String> command, Path logDir)
throws IOException {
this.writeLaunchEnv(out, environment, resources, command, logDir,
ContainerLaunch.CONTAINER_SCRIPT);
}
@VisibleForTesting
public void writeLaunchEnv(OutputStream out,
Map<String, String> environment, Map<Path, List<String>> resources,
List<String> command, Path logDir, String outFilename)
throws IOException {
ContainerLaunch.ShellScriptBuilder sb =
ContainerLaunch.ShellScriptBuilder.create();
Set<String> whitelist = new HashSet<String>();
@ -272,6 +286,14 @@ public void writeLaunchEnv(OutputStream out, Map<String, String> environment,
}
}
// dump debugging information if configured
if (getConf() != null && getConf().getBoolean(
YarnConfiguration.NM_LOG_CONTAINER_DEBUG_INFO,
YarnConfiguration.DEFAULT_NM_LOG_CONTAINER_DEBUG_INFO)) {
sb.copyDebugInformation(new Path(outFilename), new Path(logDir, outFilename));
sb.listDebugInformation(new Path(logDir, DIRECTORY_CONTENTS));
}
sb.command(command);
PrintStream pout = null;

11
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/DockerContainerExecutor.java
View File

@ -329,7 +329,7 @@ public int launchContainer(ContainerStartContext ctx) throws IOException {
* the docker image and write them out to an OutputStream.
*/
public void writeLaunchEnv(OutputStream out, Map<String, String> environment,
Map<Path, List<String>> resources, List<String> command)
Map<Path, List<String>> resources, List<String> command, Path logDir)
throws IOException {
ContainerLaunch.ShellScriptBuilder sb =
ContainerLaunch.ShellScriptBuilder.create();
@ -358,6 +358,15 @@ public void writeLaunchEnv(OutputStream out, Map<String, String> environment,
}
}
// dump debugging information if configured
if (getConf() != null && getConf().getBoolean(
YarnConfiguration.NM_LOG_CONTAINER_DEBUG_INFO,
YarnConfiguration.DEFAULT_NM_LOG_CONTAINER_DEBUG_INFO)) {
sb.copyDebugInformation(new Path(ContainerLaunch.CONTAINER_SCRIPT),
new Path(logDir, ContainerLaunch.CONTAINER_SCRIPT));
sb.listDebugInformation(new Path(logDir, DIRECTORY_CONTENTS));
}
sb.command(command);
PrintStream pout = null;

74
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/ContainerLaunch.java
View File

@ -272,7 +272,8 @@ public Integer call() {
// Write out the environment
exec.writeLaunchEnv(containerScriptOutStream, environment,
localResources, launchContext.getCommands());
localResources, launchContext.getCommands(),
new Path(containerLogDirs.get(0)));
// /////////// End of writing out container-script
@ -641,6 +642,28 @@ public final void symlink(Path src, Path dst) throws IOException {
link(src, dst);
}
/**
* Method to copy files that are useful for debugging container failures.
* This method will be called by ContainerExecutor when setting up the
* container launch script. The method should take care to make sure files
* are read-able by the yarn user if the files are to undergo
* log-aggregation.
* @param src path to the source file
* @param dst path to the destination file - should be absolute
* @throws IOException
*/
public abstract void copyDebugInformation(Path src, Path dst)
throws IOException;
/**
* Method to dump debug information to the a target file. This method will
* be called by ContainerExecutor when setting up the container launch
* script.
* @param output the file to which debug information is to be written
* @throws IOException
*/
public abstract void listDebugInformation(Path output) throws IOException;
@Override
public String toString() {
return sb.toString();
@ -704,6 +727,36 @@ protected void mkdir(Path path) {
line("mkdir -p ", path.toString());
errorCheck();
}
@Override
public void copyDebugInformation(Path src, Path dest) throws IOException {
line("# Creating copy of launch script");
line("cp \"", src.toUri().getPath(), "\" \"", dest.toUri().getPath(),
"\"");
// set permissions to 640 because we need to be able to run
// log aggregation in secure mode as well
if(dest.isAbsolute()) {
line("chmod 640 \"", dest.toUri().getPath(), "\"");
}
}
@Override
public void listDebugInformation(Path output) throws IOException {
line("# Determining directory contents");
line("echo \"ls -l:\" 1>\"", output.toString(), "\"");
line("ls -l 1>>\"", output.toString(), "\"");
// don't run error check because if there are loops
// find will exit with an error causing container launch to fail
// find will follow symlinks outside the work dir if such sylimks exist
// (like public/app local resources)
line("echo \"find -L . -maxdepth 5 -ls:\" 1>>\"", output.toString(),
"\"");
line("find -L . -maxdepth 5 -ls 1>>\"", output.toString(), "\"");
line("echo \"broken symlinks(find -L . -maxdepth 5 -type l -ls):\" 1>>\"",
output.toString(), "\"");
line("find -L . -maxdepth 5 -type l -ls 1>>\"", output.toString(), "\"");
}
}
private static final class WindowsShellScriptBuilder
@ -757,6 +810,25 @@ protected void mkdir(Path path) throws IOException {
path.toString(), path.toString()));
errorCheck();
}
@Override
public void copyDebugInformation(Path src, Path dest)
throws IOException {
// no need to worry about permissions - in secure mode
// WindowsSecureContainerExecutor will set permissions
// to allow NM to read the file
line("rem Creating copy of launch script");
lineWithLenCheck(String.format("copy \"%s\" \"%s\"", src.toString(),
dest.toString()));
}
@Override
public void listDebugInformation(Path output) throws IOException {
line("rem Determining directory contents");
lineWithLenCheck(
String.format("@echo \"dir:\" > \"%s\"", output.toString()));
lineWithLenCheck(String.format("dir >> \"%s\"", output.toString()));
}
}
private static void putEnvIfNotNull(

102
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/launcher/TestContainerLaunch.java
View File

@ -100,6 +100,7 @@
import org.apache.hadoop.yarn.util.ConverterUtils;
import org.apache.hadoop.yarn.util.LinuxResourceCalculatorPlugin;
import org.apache.hadoop.yarn.util.ResourceCalculatorPlugin;
import org.hamcrest.CoreMatchers;
import org.junit.Assert;
import org.junit.Assume;
import org.junit.Before;
@ -166,7 +167,9 @@ public void testSpecialCharSymlinks() throws IOException {
commands.add("/bin/sh ./\\\"" + badSymlink + "\\\"");
}
new DefaultContainerExecutor().writeLaunchEnv(fos, env, resources, commands);
new DefaultContainerExecutor()
.writeLaunchEnv(fos, env, resources, commands,
new Path(localLogDir.getAbsolutePath()), tempFile.getName());
fos.flush();
fos.close();
FileUtil.setExecutable(tempFile, true);
@ -233,7 +236,9 @@ public void testInvalidSymlinkDiagnostics() throws IOException {
} else {
commands.add("/bin/sh ./\\\"" + symLink + "\\\"");
}
new DefaultContainerExecutor().writeLaunchEnv(fos, env, resources, commands);
new DefaultContainerExecutor()
.writeLaunchEnv(fos, env, resources, commands,
new Path(localLogDir.getAbsolutePath()));
fos.flush();
fos.close();
FileUtil.setExecutable(tempFile, true);
@ -286,7 +291,9 @@ public void testInvalidEnvSyntaxDiagnostics() throws IOException {
"\"workflowName\":\"\n\ninsert table " +
"\npartition (cd_education_status)\nselect cd_demo_sk, cd_gender, " );
List<String> commands = new ArrayList<String>();
new DefaultContainerExecutor().writeLaunchEnv(fos, env, resources, commands);
new DefaultContainerExecutor()
.writeLaunchEnv(fos, env, resources, commands,
new Path(localLogDir.getAbsolutePath()));
fos.flush();
fos.close();
@ -364,7 +371,8 @@ public void testContainerLaunchStdoutAndStderrDiagnostics() throws IOException {
List<String> commands = new ArrayList<String>();
commands.add(command);
ContainerExecutor exec = new DefaultContainerExecutor();
exec.writeLaunchEnv(fos, env, resources, commands);
exec.writeLaunchEnv(fos, env, resources, commands,
new Path(localLogDir.getAbsolutePath()));
fos.flush();
fos.close();
@ -994,7 +1002,7 @@ public void testWindowsShellScriptBuilderCommand() throws IOException {
"X", Shell.WINDOWS_MAX_SHELL_LENGTH -callCmd.length() + 1)));
fail("longCommand was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
assertThat(e.getMessage(), CoreMatchers.containsString(expectedMessage));
}
// Composite tests, from parts: less, exact and +
@ -1016,7 +1024,7 @@ public void testWindowsShellScriptBuilderCommand() throws IOException {
org.apache.commons.lang.StringUtils.repeat("X", 2048 - callCmd.length())));
fail("long commands was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
assertThat(e.getMessage(), CoreMatchers.containsString(expectedMessage));
}
}
@ -1039,7 +1047,7 @@ public void testWindowsShellScriptBuilderEnv() throws IOException {
"A", Shell.WINDOWS_MAX_SHELL_LENGTH - ("@set somekey=").length()) + 1);
fail("long env was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
assertThat(e.getMessage(), CoreMatchers.containsString(expectedMessage));
}
}
@ -1057,14 +1065,14 @@ public void testWindowsShellScriptBuilderMkdir() throws IOException {
// test mkdir
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat("A", 1024)));
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat(
"E", (Shell.WINDOWS_MAX_SHELL_LENGTH - mkDirCmd.length())/2)));
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat("E",
(Shell.WINDOWS_MAX_SHELL_LENGTH - mkDirCmd.length()) / 2)));
try {
builder.mkdir(new Path(org.apache.commons.lang.StringUtils.repeat(
"X", (Shell.WINDOWS_MAX_SHELL_LENGTH - mkDirCmd.length())/2 +1)));
fail("long mkdir was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
assertThat(e.getMessage(), CoreMatchers.containsString(expectedMessage));
}
}
@ -1095,7 +1103,7 @@ public void testWindowsShellScriptBuilderLink() throws IOException {
"Y", (Shell.WINDOWS_MAX_SHELL_LENGTH - linkCmd.length())/2) + 1));
fail("long link was expected to throw");
} catch(IOException e) {
assertThat(e.getMessage(), containsString(expectedMessage));
assertThat(e.getMessage(), CoreMatchers.containsString(expectedMessage));
}
}
@ -1208,4 +1216,76 @@ public void testKillProcessGroup() throws Exception {
Assert.assertEquals(ExitCode.FORCE_KILLED.getExitCode(),
containerStatus.getExitStatus());
}
@Test
public void testDebuggingInformation() throws IOException {
File shellFile = null;
File tempFile = null;
Configuration conf = new YarnConfiguration();
try {
shellFile = Shell.appendScriptExtension(tmpDir, "hello");
tempFile = Shell.appendScriptExtension(tmpDir, "temp");
String testCommand = Shell.WINDOWS ? "@echo \"hello\"" :
"echo \"hello\"";
PrintWriter writer = new PrintWriter(new FileOutputStream(shellFile));
FileUtil.setExecutable(shellFile, true);
writer.println(testCommand);
writer.close();
Map<Path, List<String>> resources = new HashMap<Path, List<String>>();
Map<String, String> env = new HashMap<String, String>();
List<String> commands = new ArrayList<String>();
if (Shell.WINDOWS) {
commands.add("cmd");
commands.add("/c");
commands.add("\"" + shellFile.getAbsolutePath() + "\"");
} else {
commands.add("/bin/sh \\\"" + shellFile.getAbsolutePath() + "\\\"");
}
boolean[] debugLogsExistArray = { false, true };
for (boolean debugLogsExist : debugLogsExistArray) {
conf.setBoolean(YarnConfiguration.NM_LOG_CONTAINER_DEBUG_INFO,
debugLogsExist);
FileOutputStream fos = new FileOutputStream(tempFile);
ContainerExecutor exec = new DefaultContainerExecutor();
exec.setConf(conf);
exec.writeLaunchEnv(fos, env, resources, commands,
new Path(localLogDir.getAbsolutePath()), tempFile.getName());
fos.flush();
fos.close();
FileUtil.setExecutable(tempFile, true);
Shell.ShellCommandExecutor shexc = new Shell.ShellCommandExecutor(
new String[] { tempFile.getAbsolutePath() }, tmpDir);
shexc.execute();
assertEquals(shexc.getExitCode(), 0);
File directorInfo =
new File(localLogDir, ContainerExecutor.DIRECTORY_CONTENTS);
File scriptCopy = new File(localLogDir, tempFile.getName());
Assert.assertEquals("Directory info file missing", debugLogsExist,
directorInfo.exists());
Assert.assertEquals("Copy of launch script missing", debugLogsExist,
scriptCopy.exists());
if (debugLogsExist) {
Assert.assertTrue("Directory info file size is 0",
directorInfo.length() > 0);
Assert.assertTrue("Size of copy of launch script is 0",
scriptCopy.length() > 0);
}
}
} finally {
// cleanup
if (shellFile != null && shellFile.exists()) {
shellFile.delete();
}
if (tempFile != null && tempFile.exists()) {
tempFile.delete();
}
}
}
}