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YARN-7677. Docker image cannot set HADOOP_CONF_DIR. Contributed by Jim Brennan

This commit is contained in:
Jason Lowe 2018-01-31 11:37:54 -06:00
parent d481344783
commit 12eaae383a
8 changed files with 33 additions and 66 deletions
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31
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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@ -346,7 +346,6 @@ public abstract class ContainerExecutor implements Configurable {
public void writeLaunchEnv(OutputStream out, Map<String, String> environment,
Map<Path, List<String>> resources, List<String> command, Path logDir,
String user, String outFilename) throws IOException {
updateEnvForWhitelistVars(environment);
ContainerLaunch.ShellScriptBuilder sb =
ContainerLaunch.ShellScriptBuilder.create();
@ -364,6 +363,19 @@ public abstract class ContainerExecutor implements Configurable {
for (Map.Entry<String, String> env : environment.entrySet()) {
sb.env(env.getKey(), env.getValue());
}
// Whitelist environment variables are treated specially.
// Only add them if they are not already defined in the environment.
// Add them using special syntax to prevent them from eclipsing
// variables that may be set explicitly in the container image (e.g,
// in a docker image)
for(String var : whitelistVars) {
if (!environment.containsKey(var)) {
String val = getNMEnvVar(var);
if (val != null) {
sb.whitelistedEnv(var, val);
}
}
}
}
if (resources != null) {
@ -663,23 +675,6 @@ public abstract class ContainerExecutor implements Configurable {
}
}
/**
* Propagate variables from the nodemanager's environment into the
* container's environment if unspecified by the container.
* @param env the environment to update
* @see org.apache.hadoop.yarn.conf.YarnConfiguration#NM_ENV_WHITELIST
*/
protected void updateEnvForWhitelistVars(Map<String, String> env) {
for(String var : whitelistVars) {
if (!env.containsKey(var)) {
String val = getNMEnvVar(var);
if (val != null) {
env.put(var, val);
}
}
}
}
@VisibleForTesting
protected String getNMEnvVar(String varname) {
return System.getenv(varname);

8
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/LinuxContainerExecutor.java
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@ -66,7 +66,6 @@ import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import static org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.LinuxContainerRuntimeConstants.*;
@ -472,13 +471,6 @@ public class LinuxContainerExecutor extends ContainerExecutor {
}
}
@Override
protected void updateEnvForWhitelistVars(Map<String, String> env) {
if (linuxContainerRuntime.useWhitelistEnv(env)) {
super.updateEnvForWhitelistVars(env);
}
}
@Override
public int launchContainer(ContainerStartContext ctx)
throws IOException, ConfigurationException {

15
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
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@ -1135,6 +1135,9 @@ public class ContainerLaunch implements Callable<Integer> {
public abstract void env(String key, String value) throws IOException;
public abstract void whitelistedEnv(String key, String value)
throws IOException;
public abstract void echo(String echoStr) throws IOException;
public final void symlink(Path src, Path dst) throws IOException {
@ -1254,6 +1257,11 @@ public class ContainerLaunch implements Callable<Integer> {
line("export ", key, "=\"", value, "\"");
}
@Override
public void whitelistedEnv(String key, String value) throws IOException {
line("export ", key, "=${", key, ":-", "\"", value, "\"}");
}
@Override
public void echo(final String echoStr) throws IOException {
line("echo \"" + echoStr + "\"");
@ -1344,6 +1352,11 @@ public class ContainerLaunch implements Callable<Integer> {
errorCheck();
}
@Override
public void whitelistedEnv(String key, String value) throws IOException {
env(key, value);
}
@Override
public void echo(final String echoStr) throws IOException {
lineWithLenCheck("@echo \"", echoStr, "\"");
@ -1443,8 +1456,6 @@ public class ContainerLaunch implements Callable<Integer> {
environment.put(Environment.PWD.name(), pwd.toString());
putEnvIfAbsent(environment, Environment.HADOOP_CONF_DIR.name());
if (!Shell.WINDOWS) {
environment.put("JVM_PID", "$$");
}

6
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DefaultLinuxContainerRuntime.java
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@ -37,7 +37,6 @@ import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.util.List;
import java.util.Map;
import static org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.LinuxContainerRuntimeConstants.*;
@ -73,11 +72,6 @@ public class DefaultLinuxContainerRuntime implements LinuxContainerRuntime {
this.conf = conf;
}
@Override
public boolean useWhitelistEnv(Map<String, String> env) {
return true;
}
@Override
public void prepareContainer(ContainerRuntimeContext ctx)
throws ContainerExecutionException {

11
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DelegatingLinuxContainerRuntime.java
View File

@ -94,17 +94,6 @@ public class DelegatingLinuxContainerRuntime implements LinuxContainerRuntime {
}
}
@Override
public boolean useWhitelistEnv(Map<String, String> env) {
try {
LinuxContainerRuntime runtime = pickContainerRuntime(env);
return runtime.useWhitelistEnv(env);
} catch (ContainerExecutionException e) {
LOG.debug("Unable to determine runtime");
return false;
}
}
@VisibleForTesting
LinuxContainerRuntime pickContainerRuntime(
Map<String, String> environment) throws ContainerExecutionException {

7
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/containermanager/linux/runtime/DockerLinuxContainerRuntime.java
View File

@ -366,13 +366,6 @@ public class DockerLinuxContainerRuntime implements LinuxContainerRuntime {
return capabilities;
}
@Override
public boolean useWhitelistEnv(Map<String, String> env) {
// Avoid propagating nodemanager environment variables into the container
// so those variables can be picked up from the Docker image instead.
return false;
}
private String runDockerVolumeCommand(DockerVolumeCommand dockerVolumeCommand,
Container container) throws ContainerExecutionException {
try {

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

@ -24,8 +24,6 @@ import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.classification.InterfaceStability;
import org.apache.hadoop.yarn.server.nodemanager.containermanager.container.Container;
import java.util.Map;
/**
* An abstraction for various container runtime implementations. Examples
* include Process Tree, Docker, Appc runtimes etc. These implementations
@ -85,13 +83,4 @@ public interface ContainerRuntime {
* and hostname
*/
String[] getIpAndHost(Container container) throws ContainerExecutionException;
/**
* Whether to propagate the whitelist of environment variables from the
* nodemanager environment into the container environment.
* @param env the container's environment variables
* @return true if whitelist variables should be propagated, false otherwise
* @see org.apache.hadoop.yarn.conf.YarnConfiguration#NM_ENV_WHITELIST
*/
boolean useWhitelistEnv(Map<String, String> env);
}

10
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

@ -337,7 +337,8 @@ public class TestContainerLaunch extends BaseContainerManagerTest {
Assert.assertFalse(shellContent.contains("HADOOP_HDFS_HOME"));
// Available in env and in whitelist
Assert.assertTrue(shellContent.contains(
"export HADOOP_YARN_HOME=\"nodemanager_yarn_home\""));
"export HADOOP_YARN_HOME=${HADOOP_YARN_HOME:-\"nodemanager_yarn_home\"}"
));
fos.flush();
fos.close();
}
@ -382,9 +383,12 @@ public class TestContainerLaunch extends BaseContainerManagerTest {
// Whitelisted variable overridden by container
Assert.assertTrue(shellContent.contains(
"export HADOOP_MAPRED_HOME=\"/opt/hadoopbuild\""));
// Verify no whitelisted variables inherited from NM env
// Available in env but not in whitelist
Assert.assertFalse(shellContent.contains("HADOOP_HDFS_HOME"));
Assert.assertFalse(shellContent.contains("HADOOP_YARN_HOME"));
// Available in env and in whitelist
Assert.assertTrue(shellContent.contains(
"export HADOOP_YARN_HOME=${HADOOP_YARN_HOME:-\"nodemanager_yarn_home\"}"
));
fos.flush();
fos.close();
}