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HDFS-3663. MiniDFSCluster should capture the code path that led to the first ExitException. Contributed by Eli Collins 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1361775 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Eli Collins 2012-07-15 19:43:39 +00:00
parent 7351a01259
commit 64fc2cb03d
3 changed files with 24 additions and 7 deletions
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20
hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/util/ExitUtil.java
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@ -30,7 +30,7 @@ import org.apache.hadoop.classification.InterfaceStability;
public final class ExitUtil {
private final static Log LOG = LogFactory.getLog(ExitUtil.class.getName());
private static volatile boolean systemExitDisabled = false;
private static volatile boolean terminateCalled = false;
private static volatile ExitException firstExitException;
public static class ExitException extends RuntimeException {
private static final long serialVersionUID = 1L;
@ -53,7 +53,15 @@ public final class ExitUtil {
* @return true if terminate has been called
*/
public static boolean terminateCalled() {
return terminateCalled;
// Either we set this member or we actually called System#exit
return firstExitException != null;
}
/**
* @return the first ExitException thrown, null if none thrown yet
*/
public static ExitException getFirstExitException() {
return firstExitException;
}
/**
@ -65,9 +73,13 @@ public final class ExitUtil {
*/
public static void terminate(int status, String msg) throws ExitException {
LOG.info("Exiting with status " + status);
terminateCalled = true;
if (systemExitDisabled) {
throw new ExitException(status, msg);
ExitException ee = new ExitException(status, msg);
LOG.fatal("Terminate called", ee);
if (null == firstExitException) {
firstExitException = ee;
}
throw ee;
}
System.exit(status);
}

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -327,6 +327,9 @@ Branch-2 ( Unreleased changes )
HDFS-3610. fuse_dfs: Provide a way to use the default (configured) NN URI.
(Colin Patrick McCabe via eli)
HDFS-3663. MiniDFSCluster should capture the code path that led to
the first ExitException. (eli)
OPTIMIZATIONS
HDFS-2982. Startup performance suffers when there are many edit log

8
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
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@ -1316,9 +1316,11 @@ public class MiniDFSCluster {
public void shutdown() {
LOG.info("Shutting down the Mini HDFS Cluster");
if (checkExitOnShutdown) {
if (ExitUtil.terminateCalled()) {
throw new AssertionError("Test resulted in an unexpected exit");
}
if (ExitUtil.terminateCalled()) {
LOG.fatal("Test resulted in an unexpected exit",
ExitUtil.getFirstExitException());
throw new AssertionError("Test resulted in an unexpected exit");
}
}
shutdownDataNodes();
for (NameNodeInfo nnInfo : nameNodes) {