本文整理汇总了Java中org.apache.hadoop.hbase.protobuf.ProtobufUtil.toNamespaceDescriptor方法的典型用法代码示例。如果您正苦于以下问题：Java ProtobufUtil.toNamespaceDescriptor方法的具体用法？Java ProtobufUtil.toNamespaceDescriptor怎么用？Java ProtobufUtil.toNamespaceDescriptor使用的例子？那么, 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.hbase.protobuf.ProtobufUtil的用法示例。
在下文中一共展示了ProtobufUtil.toNamespaceDescriptor方法的3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: refreshNodes
import org.apache.hadoop.hbase.protobuf.ProtobufUtil; //导入方法依赖的package包/类
private void refreshNodes(List<ZKUtil.NodeAndData> nodes) throws IOException {
for (ZKUtil.NodeAndData n : nodes) {
if (n.isEmpty()) continue;
String path = n.getNode();
String namespace = ZKUtil.getNodeName(path);
byte[] nodeData = n.getData();
if (LOG.isDebugEnabled()) {
LOG.debug("Updating namespace cache from node "+namespace+" with data: "+
Bytes.toStringBinary(nodeData));
}
NamespaceDescriptor ns =
ProtobufUtil.toNamespaceDescriptor(
HBaseProtos.NamespaceDescriptor.parseFrom(nodeData));
cache.put(ns.getName(), ns);
}
}
示例2: get
import org.apache.hadoop.hbase.protobuf.ProtobufUtil; //导入方法依赖的package包/类
private NamespaceDescriptor get(Table table, String name) throws IOException {
Result res = table.get(new Get(Bytes.toBytes(name)));
if (res.isEmpty()) {
return null;
}
byte[] val = CellUtil.cloneValue(res.getColumnLatestCell(
HTableDescriptor.NAMESPACE_FAMILY_INFO_BYTES, HTableDescriptor.NAMESPACE_COL_DESC_BYTES));
return
ProtobufUtil.toNamespaceDescriptor(
HBaseProtos.NamespaceDescriptor.parseFrom(val));
}
示例3: isTableAvailableAndInitialized
import org.apache.hadoop.hbase.protobuf.ProtobufUtil; //导入方法依赖的package包/类
/**
* This method checks if the namespace table is assigned and then
* tries to create its HTable. If it was already created before, it also makes
* sure that the connection isn't closed.
* @return true if the namespace table manager is ready to serve, false
* otherwise
* @throws IOException
*/
@SuppressWarnings("deprecation")
public synchronized boolean isTableAvailableAndInitialized() throws IOException {
// Did we already get a table? If so, still make sure it's available
if (initialized) {
this.nsTable = this.masterServices.getConnection().getTable(TableName.NAMESPACE_TABLE_NAME);
return true;
}
// Now check if the table is assigned, if not then fail fast
if (isTableAssigned()) {
try {
nsTable = this.masterServices.getConnection().getTable(TableName.NAMESPACE_TABLE_NAME);
zkNamespaceManager = new ZKNamespaceManager(masterServices.getZooKeeper());
zkNamespaceManager.start();
if (get(nsTable, NamespaceDescriptor.DEFAULT_NAMESPACE.getName()) == null) {
create(nsTable, NamespaceDescriptor.DEFAULT_NAMESPACE);
}
if (get(nsTable, NamespaceDescriptor.SYSTEM_NAMESPACE.getName()) == null) {
create(nsTable, NamespaceDescriptor.SYSTEM_NAMESPACE);
}
ResultScanner scanner = nsTable.getScanner(HTableDescriptor.NAMESPACE_FAMILY_INFO_BYTES);
try {
for (Result result : scanner) {
byte[] val = CellUtil.cloneValue(result.getColumnLatest(
HTableDescriptor.NAMESPACE_FAMILY_INFO_BYTES,
HTableDescriptor.NAMESPACE_COL_DESC_BYTES));
NamespaceDescriptor ns =
ProtobufUtil.toNamespaceDescriptor(
HBaseProtos.NamespaceDescriptor.parseFrom(val));
zkNamespaceManager.update(ns);
}
} finally {
scanner.close();
}
initialized = true;
return true;
} catch (IOException ie) {
LOG.warn("Caught exception in initializing namespace table manager", ie);
if (nsTable != null) {
nsTable.close();
}
throw ie;
}
}
return false;
}