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YARN-5088. Improve "yarn log" command-line to read the last K bytes for the log files. Contributed by Xuan Gong

This commit is contained in:
Xuan 2016-06-01 13:44:21 -07:00
parent 35356de1ba
commit 0bc05e40fa
9 changed files with 384 additions and 43 deletions
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17
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/main/java/org/apache/hadoop/yarn/client/cli/LogsCLI.java
View File

@ -88,6 +88,7 @@ public class LogsCLI extends Configured implements Tool {
private static final String SHOW_META_INFO = "show_meta_info";
private static final String LIST_NODES_OPTION = "list_nodes";
private static final String OUT_OPTION = "out";
private static final String SIZE_OPTION = "size";
public static final String HELP_CMD = "help";
@Override
@ -113,6 +114,7 @@ public class LogsCLI extends Configured implements Tool {
String[] logFiles = null;
List<String> amContainersList = new ArrayList<String>();
String localDir = null;
long bytes = Long.MAX_VALUE;
try {
CommandLine commandLine = parser.parse(opts, args, true);
appIdStr = commandLine.getOptionValue(APPLICATION_ID_OPTION);
@ -134,6 +136,9 @@ public class LogsCLI extends Configured implements Tool {
if (commandLine.hasOption(CONTAINER_LOG_FILES)) {
logFiles = commandLine.getOptionValues(CONTAINER_LOG_FILES);
}
if (commandLine.hasOption(SIZE_OPTION)) {
bytes = Long.parseLong(commandLine.getOptionValue(SIZE_OPTION));
}
} catch (ParseException e) {
System.err.println("options parsing failed: " + e.getMessage());
printHelpMessage(printOpts);
@ -195,7 +200,7 @@ public class LogsCLI extends Configured implements Tool {
ContainerLogsRequest request = new ContainerLogsRequest(appId,
isApplicationFinished(appState), appOwner, nodeAddress, null,
containerIdStr, localDir, logs);
containerIdStr, localDir, logs, bytes);
if (showMetaInfo) {
return showMetaInfo(request, logCliHelper);
@ -402,6 +407,7 @@ public class LogsCLI extends Configured implements Tool {
ClientResponse response =
webResource.path("ws").path("v1").path("node")
.path("containerlogs").path(containerIdStr).path(logFile)
.queryParam("size", Long.toString(request.getBytes()))
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
out.println(response.getEntity(String.class));
out.println("End of LogType:" + logFile);
@ -442,7 +448,9 @@ public class LogsCLI extends Configured implements Tool {
newOptions);
}
private ContainerReport getContainerReport(String containerIdStr)
@Private
@VisibleForTesting
public ContainerReport getContainerReport(String containerIdStr)
throws YarnException, IOException {
YarnClient yarnClient = createYarnClient();
try {
@ -636,12 +644,16 @@ public class LogsCLI extends Configured implements Tool {
opts.addOption(OUT_OPTION, true, "Local directory for storing individual "
+ "container logs. The container logs will be stored based on the "
+ "node the container ran on.");
opts.addOption(SIZE_OPTION, true, "Prints the log file's first 'n' bytes "
+ "or the last 'n' bytes. Use negative values as bytes to read from "
+ "the end and positive values as bytes to read from the beginning.");
opts.getOption(APPLICATION_ID_OPTION).setArgName("Application ID");
opts.getOption(CONTAINER_ID_OPTION).setArgName("Container ID");
opts.getOption(NODE_ADDRESS_OPTION).setArgName("Node Address");
opts.getOption(APP_OWNER_OPTION).setArgName("Application Owner");
opts.getOption(AM_CONTAINER_OPTION).setArgName("AM Containers");
opts.getOption(OUT_OPTION).setArgName("Local Directory");
opts.getOption(SIZE_OPTION).setArgName("size");
return opts;
}
@ -656,6 +668,7 @@ public class LogsCLI extends Configured implements Tool {
printOpts.addOption(commandOpts.getOption(SHOW_META_INFO));
printOpts.addOption(commandOpts.getOption(LIST_NODES_OPTION));
printOpts.addOption(commandOpts.getOption(OUT_OPTION));
printOpts.addOption(commandOpts.getOption(SIZE_OPTION));
return printOpts;
}

70
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-client/src/test/java/org/apache/hadoop/yarn/client/cli/TestLogsCLI.java
View File

@ -203,6 +203,11 @@ public class TestLogsCLI {
pw.println(" for all the containers on the specific");
pw.println(" NodeManager. Currently, this option can");
pw.println(" only be used for finished applications.");
pw.println(" -size <size> Prints the log file's first 'n' bytes or");
pw.println(" the last 'n' bytes. Use negative values");
pw.println(" as bytes to read from the end and");
pw.println(" positive values as bytes to read from the");
pw.println(" beginning.");
pw.close();
String appReportStr = baos.toString("UTF-8");
Assert.assertEquals(appReportStr, sysOutStream.toString());
@ -227,7 +232,7 @@ public class TestLogsCLI {
ContainerId containerId1 = ContainerId.newContainerId(appAttemptId, 1);
ContainerId containerId2 = ContainerId.newContainerId(appAttemptId, 2);
ContainerId containerId3 = ContainerId.newContainerId(appAttemptId, 3);
NodeId nodeId = NodeId.newInstance("localhost", 1234);
final NodeId nodeId = NodeId.newInstance("localhost", 1234);
// create local logs
String rootLogDir = "target/LocalLogs";
@ -281,7 +286,16 @@ public class TestLogsCLI {
YarnClient mockYarnClient =
createMockYarnClient(
YarnApplicationState.FINISHED, ugi.getShortUserName());
LogsCLI cli = new LogsCLIForTest(mockYarnClient);
LogsCLI cli = new LogsCLIForTest(mockYarnClient) {
@Override
public ContainerReport getContainerReport(String containerIdStr)
throws YarnException, IOException {
ContainerReport mockReport = mock(ContainerReport.class);
doReturn(nodeId).when(mockReport).getAssignedNode();
doReturn("http://localhost:2345").when(mockReport).getNodeHttpAddress();
return mockReport;
}
};
cli.setConf(configuration);
int exitCode = cli.run(new String[] { "-applicationId", appId.toString() });
@ -307,6 +321,7 @@ public class TestLogsCLI {
"Hello container_0_0001_01_000003 in syslog!"));
assertTrue(sysOutStream.toString().contains(
"Hello container_0_0001_01_000003 in stdout!"));
int fullSize = sysOutStream.toByteArray().length;
sysOutStream.reset();
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
@ -329,6 +344,14 @@ public class TestLogsCLI {
"Can not find any log file matching the pattern: [123]"));
sysErrStream.reset();
// specify the bytes which is larger than the actual file size,
// we would get the full logs
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
"-logFiles", ".*", "-size", "10000" });
assertTrue(exitCode == 0);
assertTrue(sysOutStream.toByteArray().length == fullSize);
sysOutStream.reset();
// uploaded two logs for container1. The first log is empty.
// The second one is not empty.
// We can still successfully read logs for container1.
@ -345,6 +368,49 @@ public class TestLogsCLI {
+ " are not present in this log-file."));
sysOutStream.reset();
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
"-containerId", containerId3.toString(), "-logFiles", "stdout" });
assertTrue(exitCode == 0);
int fullContextSize = sysOutStream.toByteArray().length;
String fullContext = sysOutStream.toString();
sysOutStream.reset();
String logMessage = "Hello container_0_0001_01_000003 in stdout!";
int fileContentSize = logMessage.getBytes().length;
int tailContentSize = "End of LogType:syslog\n\n".getBytes().length;
// specify how many bytes we should get from logs
// specify a position number, it would get the first n bytes from
// container log
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
"-containerId", containerId3.toString(), "-logFiles", "stdout",
"-size", "5"});
assertTrue(exitCode == 0);
Assert.assertEquals(new String(logMessage.getBytes(), 0, 5),
new String(sysOutStream.toByteArray(),
(fullContextSize - fileContentSize - tailContentSize), 5));
sysOutStream.reset();
// specify a negative number, it would get the last n bytes from
// container log
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
"-containerId", containerId3.toString(), "-logFiles", "stdout",
"-size", "-5"});
assertTrue(exitCode == 0);
Assert.assertEquals(new String(logMessage.getBytes(),
logMessage.getBytes().length - 5, 5),
new String(sysOutStream.toByteArray(),
(fullContextSize - fileContentSize - tailContentSize), 5));
sysOutStream.reset();
long negative = (fullContextSize + 1000) * (-1);
exitCode = cli.run(new String[] {"-applicationId", appId.toString(),
"-containerId", containerId3.toString(), "-logFiles", "stdout",
"-size", Long.toString(negative)});
assertTrue(exitCode == 0);
Assert.assertEquals(fullContext, sysOutStream.toString());
sysOutStream.reset();
// Uploaded the empty log for container0.
// We should see the message showing the log for container0
// are not present.

89
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/AggregatedLogFormat.java
View File

@ -733,7 +733,7 @@ public class AggregatedLogFormat {
ps = new PrintStream(os);
while (true) {
try {
readContainerLogs(valueStream, ps, logUploadedTime);
readContainerLogs(valueStream, ps, logUploadedTime, Long.MAX_VALUE);
} catch (EOFException e) {
// EndOfFile
return;
@ -757,7 +757,8 @@ public class AggregatedLogFormat {
}
private static void readContainerLogs(DataInputStream valueStream,
PrintStream out, long logUploadedTime) throws IOException {
PrintStream out, long logUploadedTime, long bytes)
throws IOException {
byte[] buf = new byte[65535];
String fileType = valueStream.readUTF();
@ -773,16 +774,35 @@ public class AggregatedLogFormat {
out.println(fileLengthStr);
out.println("Log Contents:");
long toSkip = 0;
long totalBytesToRead = fileLength;
if (bytes < 0) {
long absBytes = Math.abs(bytes);
if (absBytes < fileLength) {
toSkip = fileLength - absBytes;
totalBytesToRead = absBytes;
}
long skippedBytes = valueStream.skip(toSkip);
if (skippedBytes != toSkip) {
throw new IOException("The bytes were skipped are "
+ "different from the caller requested");
}
} else {
if (bytes < fileLength) {
totalBytesToRead = bytes;
}
}
long curRead = 0;
long pendingRead = fileLength - curRead;
long pendingRead = totalBytesToRead - curRead;
int toRead =
pendingRead > buf.length ? buf.length : (int) pendingRead;
int len = valueStream.read(buf, 0, toRead);
while (len != -1 && curRead < fileLength) {
while (len != -1 && curRead < totalBytesToRead) {
out.write(buf, 0, len);
curRead += len;
pendingRead = fileLength - curRead;
pendingRead = totalBytesToRead - curRead;
toRead =
pendingRead > buf.length ? buf.length : (int) pendingRead;
len = valueStream.read(buf, 0, toRead);
@ -803,7 +823,23 @@ public class AggregatedLogFormat {
public static void readAContainerLogsForALogType(
DataInputStream valueStream, PrintStream out, long logUploadedTime)
throws IOException {
readContainerLogs(valueStream, out, logUploadedTime);
readContainerLogs(valueStream, out, logUploadedTime, Long.MAX_VALUE);
}
/**
* Keep calling this till you get a {@link EOFException} for getting logs of
* all types for a single container for the specific bytes.
*
* @param valueStream
* @param out
* @param logUploadedTime
* @param bytes
* @throws IOException
*/
public static void readAContainerLogsForALogType(
DataInputStream valueStream, PrintStream out, long logUploadedTime,
long bytes) throws IOException {
readContainerLogs(valueStream, out, logUploadedTime, bytes);
}
/**
@ -832,6 +868,22 @@ public class AggregatedLogFormat {
public static int readContainerLogsForALogType(
DataInputStream valueStream, PrintStream out, long logUploadedTime,
List<String> logType) throws IOException {
return readContainerLogsForALogType(valueStream, out, logUploadedTime,
logType, Long.MAX_VALUE);
}
/**
* Keep calling this till you get a {@link EOFException} for getting logs of
* the specific types for a single container.
* @param valueStream
* @param out
* @param logUploadedTime
* @param logType
* @throws IOException
*/
public static int readContainerLogsForALogType(
DataInputStream valueStream, PrintStream out, long logUploadedTime,
List<String> logType, long bytes) throws IOException {
byte[] buf = new byte[65535];
String fileType = valueStream.readUTF();
@ -848,15 +900,34 @@ public class AggregatedLogFormat {
out.println(fileLengthStr);
out.println("Log Contents:");
long toSkip = 0;
long totalBytesToRead = fileLength;
if (bytes < 0) {
long absBytes = Math.abs(bytes);
if (absBytes < fileLength) {
toSkip = fileLength - absBytes;
totalBytesToRead = absBytes;
}
long skippedBytes = valueStream.skip(toSkip);
if (skippedBytes != toSkip) {
throw new IOException("The bytes were skipped are "
+ "different from the caller requested");
}
} else {
if (bytes < fileLength) {
totalBytesToRead = bytes;
}
}
long curRead = 0;
long pendingRead = fileLength - curRead;
long pendingRead = totalBytesToRead - curRead;
int toRead = pendingRead > buf.length ? buf.length : (int) pendingRead;
int len = valueStream.read(buf, 0, toRead);
while (len != -1 && curRead < fileLength) {
while (len != -1 && curRead < totalBytesToRead) {
out.write(buf, 0, len);
curRead += len;
pendingRead = fileLength - curRead;
pendingRead = totalBytesToRead - curRead;
toRead = pendingRead > buf.length ? buf.length : (int) pendingRead;
len = valueStream.read(buf, 0, toRead);
}

13
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/ContainerLogsRequest.java
View File

@ -30,6 +30,7 @@ public class ContainerLogsRequest {
private boolean appFinished;
private String outputLocalDir;
private List<String> logTypes;
private long bytes;
public ContainerLogsRequest() {}
@ -42,12 +43,13 @@ public class ContainerLogsRequest {
this.setContainerId(request.getContainerId());
this.setOutputLocalDir(request.getOutputLocalDir());
this.setLogTypes(request.getLogTypes());
this.setBytes(request.getBytes());
}
public ContainerLogsRequest(ApplicationId applicationId,
boolean isAppFinished, String owner,
String address, String httpAddress, String container, String localDir,
List<String> logs) {
List<String> logs, long bytes) {
this.setAppId(applicationId);
this.setAppFinished(isAppFinished);
this.setAppOwner(owner);
@ -56,6 +58,7 @@ public class ContainerLogsRequest {
this.setContainerId(container);
this.setOutputLocalDir(localDir);
this.setLogTypes(logs);
this.setBytes(bytes);
}
public ApplicationId getAppId() {
@ -121,4 +124,12 @@ public class ContainerLogsRequest {
public void setLogTypes(List<String> logTypes) {
this.logTypes = logTypes;
}
public long getBytes() {
return bytes;
}
public void setBytes(long bytes) {
this.bytes = bytes;
}
}

25
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-common/src/main/java/org/apache/hadoop/yarn/logaggregation/LogCLIHelpers.java
View File

@ -65,6 +65,7 @@ public class LogCLIHelpers implements Configurable {
options.setAppOwner(jobOwner);
List<String> logs = new ArrayList<String>();
options.setLogTypes(logs);
options.setBytes(Long.MAX_VALUE);
return dumpAContainersLogsForALogType(options, false);
}
@ -160,12 +161,13 @@ public class LogCLIHelpers implements Configurable {
thisNodeFile.getPath());
if (logType == null || logType.isEmpty()) {
if (dumpAContainerLogs(containerId, reader, out,
thisNodeFile.getModificationTime()) > -1) {
thisNodeFile.getModificationTime(), options.getBytes()) > -1) {
foundContainerLogs = true;
}
} else {
if (dumpAContainerLogsForALogType(containerId, reader, out,
thisNodeFile.getModificationTime(), logType) > -1) {
thisNodeFile.getModificationTime(), logType,
options.getBytes()) > -1) {
foundContainerLogs = true;
}
}
@ -222,12 +224,13 @@ public class LogCLIHelpers implements Configurable {
out.println(StringUtils.repeat("=", containerId.length()));
if (logType == null || logType.isEmpty()) {
if (dumpAContainerLogs(containerId, reader, out,
thisNodeFile.getModificationTime()) > -1) {
thisNodeFile.getModificationTime(), options.getBytes()) > -1) {
foundContainerLogs = true;
}
} else {
if (dumpAContainerLogsForALogType(containerId, reader, out,
thisNodeFile.getModificationTime(), logType) > -1) {
thisNodeFile.getModificationTime(), logType,
options.getBytes()) > -1) {
foundContainerLogs = true;
}
}
@ -249,7 +252,7 @@ public class LogCLIHelpers implements Configurable {
@Private
public int dumpAContainerLogs(String containerIdStr,
AggregatedLogFormat.LogReader reader, PrintStream out,
long logUploadedTime) throws IOException {
long logUploadedTime, long bytes) throws IOException {
DataInputStream valueStream = getContainerLogsStream(
containerIdStr, reader);
@ -261,7 +264,7 @@ public class LogCLIHelpers implements Configurable {
while (true) {
try {
LogReader.readAContainerLogsForALogType(valueStream, out,
logUploadedTime);
logUploadedTime, bytes);
foundContainerLogs = true;
} catch (EOFException eof) {
break;
@ -290,7 +293,8 @@ public class LogCLIHelpers implements Configurable {
@Private
public int dumpAContainerLogsForALogType(String containerIdStr,
AggregatedLogFormat.LogReader reader, PrintStream out,
long logUploadedTime, List<String> logType) throws IOException {
long logUploadedTime, List<String> logType, long bytes)
throws IOException {
DataInputStream valueStream = getContainerLogsStream(
containerIdStr, reader);
if (valueStream == null) {
@ -301,7 +305,7 @@ public class LogCLIHelpers implements Configurable {
while (true) {
try {
int result = LogReader.readContainerLogsForALogType(
valueStream, out, logUploadedTime, logType);
valueStream, out, logUploadedTime, logType, bytes);
if (result == 0) {
foundContainerLogs = true;
}
@ -361,12 +365,13 @@ public class LogCLIHelpers implements Configurable {
try {
if (logTypes == null || logTypes.isEmpty()) {
LogReader.readAContainerLogsForALogType(valueStream, out,
thisNodeFile.getModificationTime());
thisNodeFile.getModificationTime(),
options.getBytes());
foundAnyLogs = true;
} else {
int result = LogReader.readContainerLogsForALogType(
valueStream, out, thisNodeFile.getModificationTime(),
logTypes);
logTypes, options.getBytes());
if (result == 0) {
foundAnyLogs = true;
}

50
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/main/java/org/apache/hadoop/yarn/server/applicationhistoryservice/webapp/AHSWebServices.java
View File

@ -213,7 +213,8 @@ public class AHSWebServices extends WebServices {
@Context HttpServletResponse res,
@PathParam("containerid") String containerIdStr,
@PathParam("filename") String filename,
@QueryParam("download") String download) {
@QueryParam("download") String download,
@QueryParam("size") String size) {
init(res);
ContainerId containerId;
try {
@ -225,6 +226,9 @@ public class AHSWebServices extends WebServices {
boolean downloadFile = parseBooleanParam(download);
final long length = parseLongParam(size);
ApplicationId appId = containerId.getApplicationAttemptId()
.getApplicationId();
AppInfo appInfo;
@ -233,7 +237,7 @@ public class AHSWebServices extends WebServices {
} catch (Exception ex) {
// directly find logs from HDFS.
return sendStreamOutputResponse(appId, null, null, containerIdStr,
filename, downloadFile);
filename, downloadFile, length);
}
String appOwner = appInfo.getUser();
@ -247,7 +251,7 @@ public class AHSWebServices extends WebServices {
if (isFinishedState(appInfo.getAppState())) {
// directly find logs from HDFS.
return sendStreamOutputResponse(appId, appOwner, null, containerIdStr,
filename, downloadFile);
filename, downloadFile, length);
}
return createBadResponse(Status.INTERNAL_SERVER_ERROR,
"Can not get ContainerInfo for the container: " + containerId);
@ -267,7 +271,7 @@ public class AHSWebServices extends WebServices {
return response.build();
} else if (isFinishedState(appInfo.getAppState())) {
return sendStreamOutputResponse(appId, appOwner, nodeId,
containerIdStr, filename, downloadFile);
containerIdStr, filename, downloadFile, length);
} else {
return createBadResponse(Status.NOT_FOUND,
"The application is not at Running or Finished State.");
@ -296,11 +300,11 @@ public class AHSWebServices extends WebServices {
private Response sendStreamOutputResponse(ApplicationId appId,
String appOwner, String nodeId, String containerIdStr,
String fileName, boolean downloadFile) {
String fileName, boolean downloadFile, long bytes) {
StreamingOutput stream = null;
try {
stream = getStreamingOutput(appId, appOwner, nodeId,
containerIdStr, fileName);
containerIdStr, fileName, bytes);
} catch (Exception ex) {
return createBadResponse(Status.INTERNAL_SERVER_ERROR,
ex.getMessage());
@ -318,7 +322,7 @@ public class AHSWebServices extends WebServices {
private StreamingOutput getStreamingOutput(ApplicationId appId,
String appOwner, final String nodeId, final String containerIdStr,
final String logFile) throws IOException{
final String logFile, final long bytes) throws IOException{
String suffix = LogAggregationUtils.getRemoteNodeLogDirSuffix(conf);
org.apache.hadoop.fs.Path remoteRootLogDir = new org.apache.hadoop.fs.Path(
conf.get(YarnConfiguration.NM_REMOTE_APP_LOG_DIR,
@ -391,16 +395,35 @@ public class AHSWebServices extends WebServices {
byte[] b = sb.toString().getBytes(Charset.forName("UTF-8"));
os.write(b, 0, b.length);
long toSkip = 0;
long totalBytesToRead = fileLength;
if (bytes < 0) {
long absBytes = Math.abs(bytes);
if (absBytes < fileLength) {
toSkip = fileLength - absBytes;
totalBytesToRead = absBytes;
}
long skippedBytes = valueStream.skip(toSkip);
if (skippedBytes != toSkip) {
throw new IOException("The bytes were skipped are "
+ "different from the caller requested");
}
} else {
if (bytes < fileLength) {
totalBytesToRead = bytes;
}
}
long curRead = 0;
long pendingRead = fileLength - curRead;
long pendingRead = totalBytesToRead - curRead;
int toRead = pendingRead > buf.length ? buf.length
: (int) pendingRead;
int len = valueStream.read(buf, 0, toRead);
while (len != -1 && curRead < fileLength) {
while (len != -1 && curRead < totalBytesToRead) {
os.write(buf, 0, len);
curRead += len;
pendingRead = fileLength - curRead;
pendingRead = totalBytesToRead - curRead;
toRead = pendingRead > buf.length ? buf.length
: (int) pendingRead;
len = valueStream.read(buf, 0, toRead);
@ -433,4 +456,11 @@ public class AHSWebServices extends WebServices {
};
return stream;
}
private long parseLongParam(String bytes) {
if (bytes == null || bytes.isEmpty()) {
return Long.MAX_VALUE;
}
return Long.parseLong(bytes);
}
}

66
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-applicationhistoryservice/src/test/java/org/apache/hadoop/yarn/server/applicationhistoryservice/webapp/TestAHSWebServices.java
View File

@ -601,6 +601,72 @@ public class TestAHSWebServices extends JerseyTestBase {
.get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertTrue(responseText.contains("Hello." + containerId1ForApp100));
int fullTextSize = responseText.getBytes().length;
int tailTextSize = "\nEnd of LogType:syslog\n".getBytes().length;
String logMessage = "Hello." + containerId1ForApp100;
int fileContentSize = logMessage.getBytes().length;
// specify how many bytes we should get from logs
// if we specify a position number, it would get the first n bytes from
// container log
r = resource();
response = r.path("ws").path("v1")
.path("applicationhistory").path("containerlogs")
.path(containerId1ForApp100.toString()).path(fileName)
.queryParam("user.name", user)
.queryParam("size", "5")
.accept(MediaType.TEXT_PLAIN)
.get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(responseText.getBytes().length,
(fullTextSize - fileContentSize) + 5);
assertTrue(fullTextSize >= responseText.getBytes().length);
assertEquals(new String(responseText.getBytes(),
(fullTextSize - fileContentSize - tailTextSize), 5),
new String(logMessage.getBytes(), 0, 5));
// specify how many bytes we should get from logs
// if we specify a negative number, it would get the last n bytes from
// container log
r = resource();
response = r.path("ws").path("v1")
.path("applicationhistory").path("containerlogs")
.path(containerId1ForApp100.toString()).path(fileName)
.queryParam("user.name", user)
.queryParam("size", "-5")
.accept(MediaType.TEXT_PLAIN)
.get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(responseText.getBytes().length,
(fullTextSize - fileContentSize) + 5);
assertTrue(fullTextSize >= responseText.getBytes().length);
assertEquals(new String(responseText.getBytes(),
(fullTextSize - fileContentSize - tailTextSize), 5),
new String(logMessage.getBytes(), fileContentSize - 5, 5));
// specify the bytes which is larger than the actual file size,
// we would get the full logs
r = resource();
response = r.path("ws").path("v1")
.path("applicationhistory").path("containerlogs")
.path(containerId1ForApp100.toString()).path(fileName)
.queryParam("user.name", user)
.queryParam("size", "10000")
.accept(MediaType.TEXT_PLAIN)
.get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(responseText.getBytes().length, fullTextSize);
r = resource();
response = r.path("ws").path("v1")
.path("applicationhistory").path("containerlogs")
.path(containerId1ForApp100.toString()).path(fileName)
.queryParam("user.name", user)
.queryParam("size", "-10000")
.accept(MediaType.TEXT_PLAIN)
.get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(responseText.getBytes().length, fullTextSize);
}
private static void createContainerLogInLocalDir(Path appLogsDir,

47
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/main/java/org/apache/hadoop/yarn/server/nodemanager/webapp/NMWebServices.java
View File

@ -60,7 +60,6 @@ import org.apache.hadoop.yarn.webapp.BadRequestException;
import org.apache.hadoop.yarn.webapp.NotFoundException;
import org.apache.hadoop.yarn.webapp.WebApp;
import org.apache.hadoop.yarn.webapp.util.WebAppUtils;
import com.google.inject.Inject;
import com.google.inject.Singleton;
@ -217,7 +216,8 @@ public class NMWebServices {
@Unstable
public Response getLogs(@PathParam("containerid") String containerIdStr,
@PathParam("filename") String filename,
@QueryParam("download") String download) {
@QueryParam("download") String download,
@QueryParam("size") String size) {
ContainerId containerId;
try {
containerId = ConverterUtils.toContainerId(containerIdStr);
@ -235,9 +235,12 @@ public class NMWebServices {
return Response.serverError().entity(ex.getMessage()).build();
}
boolean downloadFile = parseBooleanParam(download);
final long bytes = parseLongParam(size);
try {
final FileInputStream fis = ContainerLogsUtils.openLogFileForRead(
containerIdStr, logFile, nmContext);
final long fileLength = logFile.length();
StreamingOutput stream = new StreamingOutput() {
@Override
@ -245,9 +248,38 @@ public class NMWebServices {
WebApplicationException {
int bufferSize = 65536;
byte[] buf = new byte[bufferSize];
int len;
while ((len = fis.read(buf, 0, bufferSize)) > 0) {
long toSkip = 0;
long totalBytesToRead = fileLength;
if (bytes < 0) {
long absBytes = Math.abs(bytes);
if (absBytes < fileLength) {
toSkip = fileLength - absBytes;
totalBytesToRead = absBytes;
}
long skippedBytes = fis.skip(toSkip);
if (skippedBytes != toSkip) {
throw new IOException("The bytes were skipped are different "
+ "from the caller requested");
}
} else {
if (bytes < fileLength) {
totalBytesToRead = bytes;
}
}
long curRead = 0;
long pendingRead = totalBytesToRead - curRead;
int toRead = pendingRead > buf.length ? buf.length
: (int) pendingRead;
int len = fis.read(buf, 0, toRead);
while (len != -1 && curRead < totalBytesToRead) {
os.write(buf, 0, len);
curRead += len;
pendingRead = totalBytesToRead - curRead;
toRead = pendingRead > buf.length ? buf.length
: (int) pendingRead;
len = fis.read(buf, 0, toRead);
}
os.flush();
}
@ -268,4 +300,11 @@ public class NMWebServices {
}
return false;
}
private long parseLongParam(String bytes) {
if (bytes == null || bytes.isEmpty()) {
return Long.MAX_VALUE;
}
return Long.parseLong(bytes);
}
}

46
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager/src/test/java/org/apache/hadoop/yarn/server/nodemanager/webapp/TestNMWebServices.java
View File

@ -26,17 +26,14 @@ import java.io.File;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringReader;
import javax.ws.rs.core.MediaType;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.junit.Assert;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileUtil;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.util.NodeHealthScriptRunner;
import org.apache.hadoop.util.VersionInfo;
import org.apache.hadoop.yarn.api.records.ApplicationAttemptId;
import org.apache.hadoop.yarn.api.records.NodeId;
@ -351,6 +348,49 @@ public class TestNMWebServices extends JerseyTestBase {
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
String responseText = response.getEntity(String.class);
assertEquals(logMessage, responseText);
int fullTextSize = responseText.getBytes().length;
// specify how many bytes we should get from logs
// specify a position number, it would get the first n bytes from
// container log
response = r.path("ws").path("v1").path("node")
.path("containerlogs").path(containerIdStr).path(filename)
.queryParam("size", "5")
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(5, responseText.getBytes().length);
assertEquals(new String(logMessage.getBytes(), 0, 5), responseText);
assertTrue(fullTextSize >= responseText.getBytes().length);
// specify the bytes which is larger than the actual file size,
// we would get the full logs
response = r.path("ws").path("v1").path("node")
.path("containerlogs").path(containerIdStr).path(filename)
.queryParam("size", "10000")
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(fullTextSize, responseText.getBytes().length);
assertEquals(logMessage, responseText);
// specify a negative number, it would get the last n bytes from
// container log
response = r.path("ws").path("v1").path("node")
.path("containerlogs").path(containerIdStr).path(filename)
.queryParam("size", "-5")
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(5, responseText.getBytes().length);
assertEquals(new String(logMessage.getBytes(),
logMessage.getBytes().length - 5, 5), responseText);
assertTrue(fullTextSize >= responseText.getBytes().length);
response = r.path("ws").path("v1").path("node")
.path("containerlogs").path(containerIdStr).path(filename)
.queryParam("size", "-10000")
.accept(MediaType.TEXT_PLAIN).get(ClientResponse.class);
responseText = response.getEntity(String.class);
assertEquals(fullTextSize, responseText.getBytes().length);
assertEquals(logMessage, responseText);
// ask and download it
response = r.path("ws").path("v1").path("node").path("containerlogs")