本文整理汇总了Java中org.apache.hadoop.hdfs.server.namenode.FileJournalManager.getLogFile方法的典型用法代码示例。如果您正苦于以下问题：Java FileJournalManager.getLogFile方法的具体用法？Java FileJournalManager.getLogFile怎么用？Java FileJournalManager.getLogFile使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.hadoop.hdfs.server.namenode.FileJournalManager的用法示例。
在下文中一共展示了FileJournalManager.getLogFile方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: checkRecovery
import org.apache.hadoop.hdfs.server.namenode.FileJournalManager; //导入方法依赖的package包/类
private void checkRecovery(MiniJournalCluster cluster,
long segmentTxId, long expectedEndTxId)
throws IOException {
int numFinalized = 0;
for (int i = 0; i < cluster.getNumNodes(); i++) {
File logDir = cluster.getCurrentDir(i, JID);
EditLogFile elf = FileJournalManager.getLogFile(logDir, segmentTxId);
if (elf == null) {
continue;
}
if (!elf.isInProgress()) {
numFinalized++;
if (elf.getLastTxId() != expectedEndTxId) {
fail("File " + elf + " finalized to wrong txid, expected " +
expectedEndTxId);
}
}
}
if (numFinalized < cluster.getQuorumSize()) {
fail("Did not find a quorum of finalized logs starting at " +
segmentTxId);
}
}
示例2: checkRecovery
import org.apache.hadoop.hdfs.server.namenode.FileJournalManager; //导入方法依赖的package包/类
private void checkRecovery(MiniJournalCluster cluster,
long segmentTxId, long expectedEndTxId)
throws IOException {
int numFinalized = 0;
for (int i = 0; i < cluster.getNumNodes(); i++) {
File logDir = cluster.getJournalCurrentDir(i, JID);
EditLogFile elf = FileJournalManager.getLogFile(logDir, segmentTxId);
if (elf == null) {
continue;
}
if (!elf.isInProgress()) {
numFinalized++;
if (elf.getLastTxId() != expectedEndTxId) {
fail("File " + elf + " finalized to wrong txid, expected " +
expectedEndTxId);
}
}
}
if (numFinalized < cluster.getQuorumSize()) {
fail("Did not find a quorum of finalized logs starting at " +
segmentTxId);
}
}
示例3: doGet
import org.apache.hadoop.hdfs.server.namenode.FileJournalManager; //导入方法依赖的package包/类
@Override
public void doGet(final HttpServletRequest request,
final HttpServletResponse response) throws ServletException, IOException {
FileInputStream editFileIn = null;
try {
final ServletContext context = getServletContext();
final Configuration conf = (Configuration) getServletContext()
.getAttribute(JspHelper.CURRENT_CONF);
final String journalId = request.getParameter(JOURNAL_ID_PARAM);
QuorumJournalManager.checkJournalId(journalId);
final JNStorage storage = JournalNodeHttpServer
.getJournalFromContext(context, journalId).getStorage();
// Check security
if (!checkRequestorOrSendError(conf, request, response)) {
return;
}
// Check that the namespace info is correct
if (!checkStorageInfoOrSendError(storage, request, response)) {
return;
}
long segmentTxId = ServletUtil.parseLongParam(request,
SEGMENT_TXID_PARAM);
FileJournalManager fjm = storage.getJournalManager();
File editFile;
synchronized (fjm) {
// Synchronize on the FJM so that the file doesn't get finalized
// out from underneath us while we're in the process of opening
// it up.
EditLogFile elf = fjm.getLogFile(
segmentTxId);
if (elf == null) {
response.sendError(HttpServletResponse.SC_NOT_FOUND,
"No edit log found starting at txid " + segmentTxId);
return;
}
editFile = elf.getFile();
ImageServlet.setVerificationHeadersForGet(response, editFile);
ImageServlet.setFileNameHeaders(response, editFile);
editFileIn = new FileInputStream(editFile);
}
DataTransferThrottler throttler = ImageServlet.getThrottler(conf);
// send edits
TransferFsImage.copyFileToStream(response.getOutputStream(), editFile,
editFileIn, throttler);
} catch (Throwable t) {
String errMsg = "getedit failed. " + StringUtils.stringifyException(t);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, errMsg);
throw new IOException(errMsg);
} finally {
IOUtils.closeStream(editFileIn);
}
}
示例4: doGet
import org.apache.hadoop.hdfs.server.namenode.FileJournalManager; //导入方法依赖的package包/类
@Override
public void doGet(final HttpServletRequest request,
final HttpServletResponse response) throws ServletException, IOException {
FileInputStream editFileIn = null;
try {
final ServletContext context = getServletContext();
final Configuration conf = (Configuration) getServletContext()
.getAttribute(JspHelper.CURRENT_CONF);
final String journalId = request.getParameter(JOURNAL_ID_PARAM);
QuorumJournalManager.checkJournalId(journalId);
final JNStorage storage = JournalNodeHttpServer
.getJournalFromContext(context, journalId).getStorage();
// Check security
if (!checkRequestorOrSendError(conf, request, response)) {
return;
}
// Check that the namespace info is correct
if (!checkStorageInfoOrSendError(storage, request, response)) {
return;
}
long segmentTxId = ServletUtil.parseLongParam(request,
SEGMENT_TXID_PARAM);
FileJournalManager fjm = storage.getJournalManager();
File editFile;
synchronized (fjm) {
// Synchronize on the FJM so that the file doesn't get finalized
// out from underneath us while we're in the process of opening
// it up.
EditLogFile elf = fjm.getLogFile(
segmentTxId);
if (elf == null) {
response.sendError(HttpServletResponse.SC_NOT_FOUND,
"No edit log found starting at txid " + segmentTxId);
return;
}
editFile = elf.getFile();
GetImageServlet.setVerificationHeaders(response, editFile);
GetImageServlet.setFileNameHeaders(response, editFile);
editFileIn = new FileInputStream(editFile);
}
DataTransferThrottler throttler = GetImageServlet.getThrottler(conf);
// send edits
TransferFsImage.getFileServer(response, editFile, editFileIn, throttler);
} catch (Throwable t) {
String errMsg = "getedit failed. " + StringUtils.stringifyException(t);
response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, errMsg);
throw new IOException(errMsg);
} finally {
IOUtils.closeStream(editFileIn);
}
}