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Revert "HDFS-9686. Remove useless boxing/unboxing code. Contributed by Kousuke Saruta." 

This reverts commit e4c01b8b1c.
This commit is contained in:
Akira Ajisaka 2016-02-10 23:45:15 +09:00
parent 179b36efb5
commit 15ef3a85d9
6 changed files with 53 additions and 145 deletions
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23
hadoop-hdfs-project/hadoop-hdfs-httpfs/src/main/java/org/apache/hadoop/lib/servlet/ServerWebApp.java
View File

@ -36,9 +36,7 @@
* and uses its lifecycle to start and stop the server.
*/
@InterfaceAudience.Private
public abstract class ServerWebApp
extends Server
implements ServletContextListener {
public abstract class ServerWebApp extends Server implements ServletContextListener {
private static final String HOME_DIR = ".home.dir";
private static final String CONFIG_DIR = ".config.dir";
@ -63,8 +61,8 @@ public static void setHomeDirForCurrentThread(String homeDir) {
/**
* Constructor for testing purposes.
*/
protected ServerWebApp(String name, String homeDir, String configDir,
String logDir, String tempDir, Configuration config) {
protected ServerWebApp(String name, String homeDir, String configDir, String logDir, String tempDir,
Configuration config) {
super(name, homeDir, configDir, logDir, tempDir, config);
}
@ -122,8 +120,7 @@ static String getHomeDir(String name) {
String sysProp = name + HOME_DIR;
homeDir = System.getProperty(sysProp);
if (homeDir == null) {
throw new IllegalArgumentException(MessageFormat.format(
"System property [{0}] not defined", sysProp));
throw new IllegalArgumentException(MessageFormat.format("System property [{0}] not defined", sysProp));
}
}
return homeDir;
@ -163,8 +160,7 @@ public void contextInitialized(ServletContextEvent event) {
}
/**
* Resolves the host and port InetSocketAddress the
* web server is listening to.
* Resolves the host and port InetSocketAddress the web server is listening to.
* <p>
* This implementation looks for the following 2 properties:
* <ul>
@ -172,10 +168,8 @@ public void contextInitialized(ServletContextEvent event) {
* <li>#SERVER_NAME#.http.port</li>
* </ul>
*
* @return the host and port InetSocketAddress the
* web server is listening to.
* @throws ServerException thrown
* if any of the above 2 properties is not defined.
* @return the host and port InetSocketAddress the web server is listening to.
* @throws ServerException thrown if any of the above 2 properties is not defined.
*/
protected InetSocketAddress resolveAuthority() throws ServerException {
String hostnameKey = getName() + HTTP_HOSTNAME;
@ -239,7 +233,6 @@ public void setAuthority(InetSocketAddress authority) {
*
*/
public boolean isSslEnabled() {
return Boolean.parseBoolean(
System.getProperty(getName() + SSL_ENABLED, "false"));
return Boolean.valueOf(System.getProperty(getName() + SSL_ENABLED, "false"));
}
}

3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
View File

@ -1045,9 +1045,6 @@ Release 2.8.0 - UNRELEASED
HDFS-9726. Refactor IBR code to a new class. (szetszwo)
HDFS-9686. Remove useless boxing/unboxing code.
(Kousuke Saruta via aajisaka)
BUG FIXES
HDFS-8091: ACLStatus and XAttributes should be presented to

41
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSEditLogOp.java
View File

@ -416,9 +416,7 @@ private static List<XAttr> readXAttrsFromEditLog(DataInputStream in,
}
@SuppressWarnings("unchecked")
static abstract class AddCloseOp
extends FSEditLogOp
implements BlockListUpdatingOp {
static abstract class AddCloseOp extends FSEditLogOp implements BlockListUpdatingOp {
int length;
long inodeId;
String path;
@ -639,8 +637,7 @@ void readFields(DataInputStream in, int logVersion)
NameNodeLayoutVersion.Feature.BLOCK_STORAGE_POLICY, logVersion)) {
this.storagePolicyId = FSImageSerialization.readByte(in);
} else {
this.storagePolicyId =
HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED;
this.storagePolicyId = HdfsConstants.BLOCK_STORAGE_POLICY_ID_UNSPECIFIED;
}
// read clientId and callId
readRpcIds(in, logVersion);
@ -720,7 +717,7 @@ protected void toXml(ContentHandler contentHandler) throws SAXException {
Long.toString(inodeId));
XMLUtils.addSaxString(contentHandler, "PATH", path);
XMLUtils.addSaxString(contentHandler, "REPLICATION",
Short.toString(replication));
Short.valueOf(replication).toString());
XMLUtils.addSaxString(contentHandler, "MTIME",
Long.toString(mtime));
XMLUtils.addSaxString(contentHandler, "ATIME",
@ -748,7 +745,7 @@ void fromXml(Stanza st) throws InvalidXmlException {
this.length = Integer.parseInt(st.getValue("LENGTH"));
this.inodeId = Long.parseLong(st.getValue("INODEID"));
this.path = st.getValue("PATH");
this.replication = Short.parseShort(st.getValue("REPLICATION"));
this.replication = Short.valueOf(st.getValue("REPLICATION"));
this.mtime = Long.parseLong(st.getValue("MTIME"));
this.atime = Long.parseLong(st.getValue("ATIME"));
this.blockSize = Long.parseLong(st.getValue("BLOCKSIZE"));
@ -1189,12 +1186,12 @@ public String toString() {
protected void toXml(ContentHandler contentHandler) throws SAXException {
XMLUtils.addSaxString(contentHandler, "PATH", path);
XMLUtils.addSaxString(contentHandler, "REPLICATION",
Short.toString(replication));
Short.valueOf(replication).toString());
}
@Override void fromXml(Stanza st) throws InvalidXmlException {
this.path = st.getValue("PATH");
this.replication = Short.parseShort(st.getValue("REPLICATION"));
this.replication = Short.valueOf(st.getValue("REPLICATION"));
}
}
@ -1982,13 +1979,13 @@ public String toString() {
protected void toXml(ContentHandler contentHandler) throws SAXException {
XMLUtils.addSaxString(contentHandler, "SRC", src);
XMLUtils.addSaxString(contentHandler, "MODE",
Short.toString(permissions.toShort()));
Short.valueOf(permissions.toShort()).toString());
}
@Override void fromXml(Stanza st) throws InvalidXmlException {
this.src = st.getValue("SRC");
this.permissions = new FsPermission(
Short.parseShort(st.getValue("MODE")));
Short.valueOf(st.getValue("MODE")));
}
}
@ -4472,13 +4469,13 @@ public String toString() {
protected void toXml(ContentHandler contentHandler) throws SAXException {
XMLUtils.addSaxString(contentHandler, "PATH", path);
XMLUtils.addSaxString(contentHandler, "POLICYID",
Byte.toString(policyId));
Byte.valueOf(policyId).toString());
}
@Override
void fromXml(Stanza st) throws InvalidXmlException {
this.path = st.getValue("PATH");
this.policyId = Byte.parseByte(st.getValue("POLICYID"));
this.policyId = Byte.valueOf(st.getValue("POLICYID"));
}
}
@ -4955,8 +4952,7 @@ public static Block blockFromXml(Stanza st)
public static void delegationTokenToXml(ContentHandler contentHandler,
DelegationTokenIdentifier token) throws SAXException {
contentHandler.startElement(
"", "", "DELEGATION_TOKEN_IDENTIFIER", new AttributesImpl());
contentHandler.startElement("", "", "DELEGATION_TOKEN_IDENTIFIER", new AttributesImpl());
XMLUtils.addSaxString(contentHandler, "KIND", token.getKind().toString());
XMLUtils.addSaxString(contentHandler, "SEQUENCE_NUMBER",
Integer.toString(token.getSequenceNumber()));
@ -5002,8 +4998,7 @@ public static DelegationTokenIdentifier delegationTokenFromXml(Stanza st)
public static void delegationKeyToXml(ContentHandler contentHandler,
DelegationKey key) throws SAXException {
contentHandler.startElement(
"", "", "DELEGATION_KEY", new AttributesImpl());
contentHandler.startElement("", "", "DELEGATION_KEY", new AttributesImpl());
XMLUtils.addSaxString(contentHandler, "KEY_ID",
Integer.toString(key.getKeyId()));
XMLUtils.addSaxString(contentHandler, "EXPIRY_DATE",
@ -5031,8 +5026,7 @@ public static DelegationKey delegationKeyFromXml(Stanza st)
public static void permissionStatusToXml(ContentHandler contentHandler,
PermissionStatus perm) throws SAXException {
contentHandler.startElement(
"", "", "PERMISSION_STATUS", new AttributesImpl());
contentHandler.startElement("", "", "PERMISSION_STATUS", new AttributesImpl());
XMLUtils.addSaxString(contentHandler, "USERNAME", perm.getUserName());
XMLUtils.addSaxString(contentHandler, "GROUPNAME", perm.getGroupName());
fsPermissionToXml(contentHandler, perm.getPermission());
@ -5050,13 +5044,13 @@ public static PermissionStatus permissionStatusFromXml(Stanza st)
public static void fsPermissionToXml(ContentHandler contentHandler,
FsPermission mode) throws SAXException {
XMLUtils.addSaxString(contentHandler, "MODE",
Short.toString(mode.toShort()));
XMLUtils.addSaxString(contentHandler, "MODE", Short.valueOf(mode.toShort())
.toString());
}
public static FsPermission fsPermissionFromXml(Stanza st)
throws InvalidXmlException {
short mode = Short.parseShort(st.getValue("MODE"));
short mode = Short.valueOf(st.getValue("MODE"));
return new FsPermission(mode);
}
@ -5065,8 +5059,7 @@ private static void fsActionToXml(ContentHandler contentHandler, FsAction v)
XMLUtils.addSaxString(contentHandler, "PERM", v.SYMBOL);
}
private static FsAction fsActionFromXml(Stanza st)
throws InvalidXmlException {
private static FsAction fsActionFromXml(Stanza st) throws InvalidXmlException {
FsAction v = FSACTION_SYMBOL_MAP.get(st.getValue("PERM"));
if (v == null)
throw new InvalidXmlException("Invalid value for FsAction");

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/top/window/RollingWindowManager.java
View File

@ -173,8 +173,7 @@ public RollingWindowManager(Configuration conf, int reportingPeriodMs) {
* @param user the user that updated the metric
* @param delta the amount of change in the metric, e.g., +1
*/
public void recordMetric(long time, String command,
String user, long delta) {
public void recordMetric(long time, String command, String user, long delta) {
RollingWindow window = getRollingWindow(command, user);
window.incAt(time, delta);
}
@ -209,7 +208,7 @@ public TopWindow snapshot(long time) {
}
for (int i = 0; i < size; i++) {
NameValuePair userEntry = reverse.pop();
User user = new User(userEntry.name, userEntry.value);
User user = new User(userEntry.name, Long.valueOf(userEntry.value));
op.addUser(user);
}
}
@ -244,8 +243,7 @@ private TopN getTopUsersForMetric(long time, String metricName,
metricName, userName, windowSum);
topN.offer(new NameValuePair(userName, windowSum));
}
LOG.debug("topN users size for command {} is: {}",
metricName, topN.size());
LOG.debug("topN users size for command {} is: {}", metricName, topN.size());
return topN;
}

62
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/shortcircuit/TestShortCircuitLocalRead.java
View File

@ -72,9 +72,9 @@
/**
* Test for short circuit read functionality using {@link BlockReaderLocal}.
* When a block is being read by a client is on the local datanode, instead of
* using {@link DataTransferProtocol} and connect to datanode,
* the short circuit read allows reading the file directly
* from the files on the local file system.
* using {@link DataTransferProtocol} and connect to datanode, the short circuit
* read allows reading the file directly from the files on the local file
* system.
*/
public class TestShortCircuitLocalRead {
private static TemporarySocketDirectory sockDir;
@ -195,8 +195,7 @@ static void checkFileContentDirect(URI uri, Path name, byte[] expected,
HdfsDataInputStream stm = (HdfsDataInputStream)fs.open(name);
ByteBuffer actual =
ByteBuffer.allocateDirect(expected.length - readOffset);
ByteBuffer actual = ByteBuffer.allocateDirect(expected.length - readOffset);
IOUtils.skipFully(stm, readOffset);
@ -231,8 +230,7 @@ static void checkFileContentDirect(URI uri, Path name, byte[] expected,
public void doTestShortCircuitReadLegacy(boolean ignoreChecksum, int size,
int readOffset, String shortCircuitUser, String readingUser,
boolean legacyShortCircuitFails)
throws IOException, InterruptedException {
boolean legacyShortCircuitFails) throws IOException, InterruptedException {
doTestShortCircuitReadImpl(ignoreChecksum, size, readOffset,
shortCircuitUser, readingUser, legacyShortCircuitFails);
}
@ -249,8 +247,7 @@ public void doTestShortCircuitRead(boolean ignoreChecksum, int size,
*/
public void doTestShortCircuitReadImpl(boolean ignoreChecksum, int size,
int readOffset, String shortCircuitUser, String readingUser,
boolean legacyShortCircuitFails)
throws IOException, InterruptedException {
boolean legacyShortCircuitFails) throws IOException, InterruptedException {
Configuration conf = new Configuration();
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.KEY, true);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY,
@ -265,8 +262,7 @@ public void doTestShortCircuitReadImpl(boolean ignoreChecksum, int size,
if (shortCircuitUser != null) {
conf.set(DFSConfigKeys.DFS_BLOCK_LOCAL_PATH_ACCESS_USER_KEY,
shortCircuitUser);
conf.setBoolean(
HdfsClientConfigKeys.DFS_CLIENT_USE_LEGACY_BLOCKREADERLOCAL, true);
conf.setBoolean(HdfsClientConfigKeys.DFS_CLIENT_USE_LEGACY_BLOCKREADERLOCAL, true);
}
if (simulatedStorage) {
SimulatedFSDataset.setFactory(conf);
@ -328,8 +324,7 @@ public void testLocalReadLegacy() throws Exception {
*/
@Test(timeout=60000)
public void testLocalReadFallback() throws Exception {
doTestShortCircuitReadLegacy(
true, 13, 0, getCurrentUser(), "notallowed", true);
doTestShortCircuitReadLegacy(true, 13, 0, getCurrentUser(), "notallowed", true);
}
@Test(timeout=60000)
@ -372,8 +367,7 @@ public void testDeprecatedGetBlockLocalPathInfoRpc() throws IOException {
Token<BlockTokenIdentifier> token = lb.get(0).getBlockToken();
final DatanodeInfo dnInfo = lb.get(0).getLocations()[0];
ClientDatanodeProtocol proxy =
DFSUtilClient.createClientDatanodeProtocolProxy(
dnInfo, conf, 60000, false);
DFSUtilClient.createClientDatanodeProtocolProxy(dnInfo, conf, 60000, false);
try {
proxy.getBlockLocalPathInfo(blk, token);
Assert.fail("The call should have failed as this user "
@ -393,8 +387,7 @@ public void testSkipWithVerifyChecksum() throws IOException {
int size = blockSize;
Configuration conf = new Configuration();
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.KEY, true);
conf.setBoolean(
HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY, false);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY, false);
conf.set(DFSConfigKeys.DFS_DOMAIN_SOCKET_PATH_KEY,
new File(sockDir.getDir(),
"testSkipWithVerifyChecksum._PORT.sock").getAbsolutePath());
@ -441,8 +434,7 @@ public void testHandleTruncatedBlockFile() throws IOException {
MiniDFSCluster cluster = null;
HdfsConfiguration conf = new HdfsConfiguration();
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.KEY, true);
conf.setBoolean(
HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY, false);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY, false);
conf.set(DFSConfigKeys.DFS_DOMAIN_SOCKET_PATH_KEY,
new File(sockDir.getDir(),
"testHandleTruncatedBlockFile._PORT.sock").getAbsolutePath());
@ -531,8 +523,8 @@ public static void main(String[] args) throws Exception {
System.out.println("Usage: test shortcircuit checksum threadCount");
System.exit(1);
}
boolean shortcircuit = Boolean.parseBoolean(args[0]);
boolean checksum = Boolean.parseBoolean(args[1]);
boolean shortcircuit = Boolean.valueOf(args[0]);
boolean checksum = Boolean.valueOf(args[1]);
int threadCount = Integer.parseInt(args[2]);
// Setup create a file
@ -543,8 +535,7 @@ public static void main(String[] args) throws Exception {
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.SKIP_CHECKSUM_KEY,
checksum);
// Override fileSize and DATA_TO_WRITE to
// much larger values for benchmark test
// Override fileSize and DATA_TO_WRITE to much larger values for benchmark test
int fileSize = 1000 * blockSize + 100; // File with 1000 blocks
final byte [] dataToWrite = AppendTestUtil.randomBytes(seed, fileSize);
@ -566,8 +557,7 @@ public void run() {
for (int i = 0; i < iteration; i++) {
try {
String user = getCurrentUser();
checkFileContent(
fs.getUri(), file1, dataToWrite, 0, user, conf, true);
checkFileContent(fs.getUri(), file1, dataToWrite, 0, user, conf, true);
} catch (IOException e) {
e.printStackTrace();
} catch (InterruptedException e) {
@ -600,13 +590,11 @@ public void testReadWithRemoteBlockReader()
* through RemoteBlockReader
* @throws IOException
*/
public void doTestShortCircuitReadWithRemoteBlockReader(
boolean ignoreChecksum, int size, String shortCircuitUser,
int readOffset, boolean shortCircuitFails)
throws IOException, InterruptedException {
public void doTestShortCircuitReadWithRemoteBlockReader(boolean ignoreChecksum,
int size, String shortCircuitUser, int readOffset,
boolean shortCircuitFails) throws IOException, InterruptedException {
Configuration conf = new Configuration();
conf.setBoolean(
HdfsClientConfigKeys.DFS_CLIENT_USE_LEGACY_BLOCKREADER, true);
conf.setBoolean(HdfsClientConfigKeys.DFS_CLIENT_USE_LEGACY_BLOCKREADER, true);
conf.setBoolean(HdfsClientConfigKeys.Read.ShortCircuit.KEY, true);
MiniDFSCluster cluster = new MiniDFSCluster.Builder(conf).numDataNodes(1)
@ -615,8 +603,7 @@ public void doTestShortCircuitReadWithRemoteBlockReader(
// check that / exists
Path path = new Path("/");
URI uri = cluster.getURI();
assertTrue(
"/ should be a directory", fs.getFileStatus(path).isDirectory());
assertTrue("/ should be a directory", fs.getFileStatus(path).isDirectory());
byte[] fileData = AppendTestUtil.randomBytes(seed, size);
Path file1 = new Path("filelocal.dat");
@ -628,12 +615,10 @@ public void doTestShortCircuitReadWithRemoteBlockReader(
checkFileContent(uri, file1, fileData, readOffset, shortCircuitUser,
conf, shortCircuitFails);
//RemoteBlockReader have unsupported method read(ByteBuffer bf)
assertTrue(
"RemoteBlockReader unsupported method read(ByteBuffer bf) error",
assertTrue("RemoteBlockReader unsupported method read(ByteBuffer bf) error",
checkUnsupportedMethod(fs, file1, fileData, readOffset));
} catch(IOException e) {
throw new IOException(
"doTestShortCircuitReadWithRemoteBlockReader ex error ", e);
throw new IOException("doTestShortCircuitReadWithRemoteBlockReader ex error ", e);
} catch(InterruptedException inEx) {
throw inEx;
} finally {
@ -645,8 +630,7 @@ public void doTestShortCircuitReadWithRemoteBlockReader(
private boolean checkUnsupportedMethod(FileSystem fs, Path file,
byte[] expected, int readOffset) throws IOException {
HdfsDataInputStream stm = (HdfsDataInputStream)fs.open(file);
ByteBuffer actual =
ByteBuffer.allocateDirect(expected.length - readOffset);
ByteBuffer actual = ByteBuffer.allocateDirect(expected.length - readOffset);
IOUtils.skipFully(stm, readOffset);
try {
stm.read(actual);

57
hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-app/src/test/java/org/apache/hadoop/mapreduce/v2/app/TestStagingCleanup.java
View File

@ -245,63 +245,6 @@ public void testDeletionofStagingOnKillLastTry() throws IOException {
verify(fs).delete(stagingJobPath, true);
}
@Test
public void testByPreserveFailedStaging() throws IOException {
conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
// Failed task's staging files should be kept
conf.setBoolean(MRJobConfig.PRESERVE_FAILED_TASK_FILES, true);
fs = mock(FileSystem.class);
when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
//Staging Dir exists
String user = UserGroupInformation.getCurrentUser().getShortUserName();
Path stagingDir = MRApps.getStagingAreaDir(conf, user);
when(fs.exists(stagingDir)).thenReturn(true);
ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(),
0);
ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
JobId jobid = recordFactory.newRecordInstance(JobId.class);
jobid.setAppId(appId);
ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
Assert.assertTrue(MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS > 1);
MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc,
JobStateInternal.FAILED, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS);
appMaster.init(conf);
appMaster.start();
appMaster.shutDownJob();
//test whether notifyIsLastAMRetry called
Assert.assertEquals(true, ((TestMRApp)appMaster).getTestIsLastAMRetry());
verify(fs, times(0)).delete(stagingJobPath, true);
}
@Test
public void testPreservePatternMatchedStaging() throws IOException {
conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, stagingJobDir);
// The staging files that are matched to the pattern
// should not be deleted
conf.set(MRJobConfig.PRESERVE_FILES_PATTERN, "JobDir");
fs = mock(FileSystem.class);
when(fs.delete(any(Path.class), anyBoolean())).thenReturn(true);
//Staging Dir exists
String user = UserGroupInformation.getCurrentUser().getShortUserName();
Path stagingDir = MRApps.getStagingAreaDir(conf, user);
when(fs.exists(stagingDir)).thenReturn(true);
ApplicationId appId = ApplicationId.newInstance(System.currentTimeMillis(),
0);
ApplicationAttemptId attemptId = ApplicationAttemptId.newInstance(appId, 1);
JobId jobid = recordFactory.newRecordInstance(JobId.class);
jobid.setAppId(appId);
ContainerAllocator mockAlloc = mock(ContainerAllocator.class);
Assert.assertTrue(MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS > 1);
MRAppMaster appMaster = new TestMRApp(attemptId, mockAlloc,
JobStateInternal.RUNNING, MRJobConfig.DEFAULT_MR_AM_MAX_ATTEMPTS);
appMaster.init(conf);
appMaster.start();
appMaster.shutDownJob();
//test whether notifyIsLastAMRetry called
Assert.assertEquals(true, ((TestMRApp)appMaster).getTestIsLastAMRetry());
verify(fs, times(0)).delete(stagingJobPath, true);
}
private class TestMRApp extends MRAppMaster {
ContainerAllocator allocator;
boolean testIsLastAMRetry = false;