/// <exception cref="Org.Apache.Hadoop.Ipc.StandbyException"/>
public override void CheckOperation(HAContext context, NameNode.OperationCategory
op)
{
if (op == NameNode.OperationCategory.Unchecked || (op == NameNode.OperationCategory
.Read && context.AllowStaleReads()))
{
return;
}
string msg = "Operation category " + op + " is not supported in state " + context
.GetState();
throw new StandbyException(msg);
}
/// <exception cref="Org.Apache.Hadoop.Ipc.StandbyException"/>
public override void CheckOperation(NameNode.OperationCategory op)
{
// NameNodeHAContext
if (op == NameNode.OperationCategory.Unchecked || op == NameNode.OperationCategory
.Checkpoint)
{
return;
}
if (NameNode.OperationCategory.Journal != op && !(NameNode.OperationCategory.Read
== op && !this._enclosing.IsRole(HdfsServerConstants.NamenodeRole.Checkpoint)))
{
string msg = "Operation category " + op + " is not supported at " + this._enclosing
.GetRole();
throw new StandbyException(msg);
}
}
/// <summary>Check if an operation is supported in a given state.</summary>
/// <param name="context">HA context</param>
/// <param name="op">Type of the operation.</param>
/// <exception cref="Org.Apache.Hadoop.Ipc.StandbyException">
/// if a given type of operation is not
/// supported in standby state
/// </exception>
public abstract void CheckOperation(HAContext context, NameNode.OperationCategory
op);
public override void CheckOperation(HAContext context, NameNode.OperationCategory
op)
{
return;
}
/// <exception cref="Org.Apache.Hadoop.Ipc.StandbyException"/>
public override void CheckOperation(HAContext context, NameNode.OperationCategory
op)
{
// HAState
context.CheckOperation(op);
}
