本文整理汇总了Java中org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption.RECOVER属性的典型用法代码示例。如果您正苦于以下问题：Java StartupOption.RECOVER属性的具体用法？Java StartupOption.RECOVER怎么用？Java StartupOption.RECOVER使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类org.apache.hadoop.hdfs.server.common.HdfsServerConstants.StartupOption的用法示例。
在下文中一共展示了StartupOption.RECOVER属性的2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: loadFromDisk
/**
* Instantiates an FSNamesystem loaded from the image and edits
* directories specified in the passed Configuration.
*
* @param conf the Configuration which specifies the storage directories
* from which to load
* @return an FSNamesystem which contains the loaded namespace
* @throws IOException if loading fails
*/
static FSNamesystem loadFromDisk(Configuration conf) throws IOException {
checkConfiguration(conf);
FSImage fsImage = new FSImage(conf,
FSNamesystem.getNamespaceDirs(conf),
FSNamesystem.getNamespaceEditsDirs(conf));
FSNamesystem namesystem = new FSNamesystem(conf, fsImage, false);
StartupOption startOpt = NameNode.getStartupOption(conf);
if (startOpt == StartupOption.RECOVER) {
namesystem.setSafeMode(SafeModeAction.SAFEMODE_ENTER);
}
long loadStart = monotonicNow();
try {
namesystem.loadFSImage(startOpt);
} catch (IOException ioe) {
LOG.warn("Encountered exception loading fsimage", ioe);
fsImage.close();
throw ioe;
}
long timeTakenToLoadFSImage = monotonicNow() - loadStart;
LOG.info("Finished loading FSImage in " + timeTakenToLoadFSImage + " msecs");
NameNodeMetrics nnMetrics = NameNode.getNameNodeMetrics();
if (nnMetrics != null) {
nnMetrics.setFsImageLoadTime((int) timeTakenToLoadFSImage);
}
return namesystem;
}
示例2: createNameNode
private void createNameNode(int nnIndex, Configuration conf,
int numDataNodes, boolean format, StartupOption operation,
String clusterId, String nameserviceId,
String nnId)
throws IOException {
// Format and clean out DataNode directories
if (format) {
DFSTestUtil.formatNameNode(conf);
}
if (operation == StartupOption.UPGRADE){
operation.setClusterId(clusterId);
}
// Start the NameNode after saving the default file system.
String originalDefaultFs = conf.get(FS_DEFAULT_NAME_KEY);
String[] args = createArgs(operation);
NameNode nn = NameNode.createNameNode(args, conf);
if (operation == StartupOption.RECOVER) {
return;
}
// After the NN has started, set back the bound ports into
// the conf
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_RPC_ADDRESS_KEY,
nameserviceId, nnId), nn.getNameNodeAddressHostPortString());
if (nn.getHttpAddress() != null) {
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_HTTP_ADDRESS_KEY,
nameserviceId, nnId), NetUtils.getHostPortString(nn.getHttpAddress()));
}
if (nn.getHttpsAddress() != null) {
conf.set(DFSUtil.addKeySuffixes(DFS_NAMENODE_HTTPS_ADDRESS_KEY,
nameserviceId, nnId), NetUtils.getHostPortString(nn.getHttpsAddress()));
}
DFSUtil.setGenericConf(conf, nameserviceId, nnId,
DFS_NAMENODE_HTTP_ADDRESS_KEY);
nameNodes[nnIndex] = new NameNodeInfo(nn, nameserviceId, nnId,
operation, new Configuration(conf));
// Restore the default fs name
if (originalDefaultFs == null) {
conf.set(FS_DEFAULT_NAME_KEY, "");
} else {
conf.set(FS_DEFAULT_NAME_KEY, originalDefaultFs);
}
}