Author: cos
Date: Tue May 25 23:00:40 2010
New Revision: 948242
URL: http://svn.apache.org/viewvc?rev=948242&view=rev
Log:
HADOOP-6777. Implement a functionality for suspend and resume a process.
Contributed by Vinay Thota.
Modified:
hadoop/common/trunk/CHANGES.txt
hadoop/common/trunk/src/test/system/aop/org/apache/hadoop/test/system/DaemonProtocolAspect.aj
hadoop/common/trunk/src/test/system/java/org/apache/hadoop/test/system/DaemonProtocol.java
Modified: hadoop/common/trunk/CHANGES.txt
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/CHANGES.txt?rev=948242&r1=948241&r2=948242&view=diff
==============================================================================
--- hadoop/common/trunk/CHANGES.txt (original)
+++ hadoop/common/trunk/CHANGES.txt Tue May 25 23:00:40 2010
@@ -336,6 +336,9 @@ Release 0.21.0 - Unreleased
IMPROVEMENTS
+ HADOOP-6777. Implement a functionality for suspend and resume a process.
+ (Vinay Thota via cos)
+
HADOOP-6772. Utilities for system tests specific. (Vinay Thota via cos)
HADOOP-6771. Herriot's artifact id for Maven deployment should be set to
Modified:
hadoop/common/trunk/src/test/system/aop/org/apache/hadoop/test/system/DaemonProtocolAspect.aj
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/src/test/system/aop/org/apache/hadoop/test/system/DaemonProtocolAspect.aj?rev=948242&r1=948241&r2=948242&view=diff
==============================================================================
---
hadoop/common/trunk/src/test/system/aop/org/apache/hadoop/test/system/DaemonProtocolAspect.aj
(original)
+++
hadoop/common/trunk/src/test/system/aop/org/apache/hadoop/test/system/DaemonProtocolAspect.aj
Tue May 25 23:00:40 2010
@@ -31,6 +31,7 @@ import org.apache.commons.logging.LogFac
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.security.UserGroupInformation;
import org.apache.hadoop.util.Shell.ShellCommandExecutor;
+import org.apache.hadoop.util.Shell;
import org.apache.hadoop.fs.FileStatus;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
@@ -274,6 +275,56 @@ public aspect DaemonProtocolAspect {
return Integer.parseInt(output.replaceAll("\n", "").trim());
}
+ /**
+ * This method is used for suspending the process.
+ * @param pid process id
+ * @throws IOException if an I/O error occurs.
+ * @return true if process is suspended otherwise false.
+ */
+ public boolean DaemonProtocol.suspendProcess(String pid) throws IOException {
+ String suspendCmd = getDaemonConf().get("test.system.hdrc.suspend.cmd",
+ "kill -SIGSTOP");
+ String [] command = {"bash", "-c", suspendCmd + " " + pid};
+ ShellCommandExecutor shexec = new ShellCommandExecutor(command);
+ try {
+ shexec.execute();
+ } catch (Shell.ExitCodeException e) {
+ LOG.warn("suspended process throws an exitcode "
+ + "exception for not being suspended the given process id.");
+ return false;
+ }
+ LOG.info("The suspend process command is :"
+ + shexec.toString()
+ + " and the output for the command is "
+ + shexec.getOutput());
+ return true;
+ }
+
+ /**
+ * This method is used for resuming the process
+ * @param pid process id of suspended process.
+ * @throws IOException if an I/O error occurs.
+ * @return true if suspeneded process is resumed otherwise false.
+ */
+ public boolean DaemonProtocol.resumeProcess(String pid) throws IOException {
+ String resumeCmd = getDaemonConf().get("test.system.hdrc.resume.cmd",
+ "kill -SIGCONT");
+ String [] command = {"bash", "-c", resumeCmd + " " + pid};
+ ShellCommandExecutor shexec = new ShellCommandExecutor(command);
+ try {
+ shexec.execute();
+ } catch(Shell.ExitCodeException e) {
+ LOG.warn("Resume process throws an exitcode "
+ + "exception for not being resumed the given process id.");
+ return false;
+ }
+ LOG.info("The resume process command is :"
+ + shexec.toString()
+ + " and the output for the command is "
+ + shexec.getOutput());
+ return true;
+ }
+
private String DaemonProtocol.user = null;
public String DaemonProtocol.getDaemonUser() {
Modified:
hadoop/common/trunk/src/test/system/java/org/apache/hadoop/test/system/DaemonProtocol.java
URL:
http://svn.apache.org/viewvc/hadoop/common/trunk/src/test/system/java/org/apache/hadoop/test/system/DaemonProtocol.java?rev=948242&r1=948241&r2=948242&view=diff
==============================================================================
---
hadoop/common/trunk/src/test/system/java/org/apache/hadoop/test/system/DaemonProtocol.java
(original)
+++
hadoop/common/trunk/src/test/system/java/org/apache/hadoop/test/system/DaemonProtocol.java
Tue May 25 23:00:40 2010
@@ -162,4 +162,20 @@ public interface DaemonProtocol extends
* @throws IOException in case of errors
*/
String getDaemonUser() throws IOException;
+
+ /**
+ * It uses for suspending the process.
+ * @param pid process id.
+ * @return true if the process is suspended otherwise false.
+ * @throws IOException if an I/O error occurs.
+ */
+ boolean suspendProcess(String pid) throws IOException;
+
+ /**
+ * It uses for resuming the suspended process.
+ * @param pid process id
+ * @return true if suspended process is resumed otherwise false.
+ * @throws IOException if an I/O error occurs.
+ */
+ boolean resumeProcess(String pid) throws IOException;
}
