internal DatanodeStorageInfo(DatanodeDescriptor dn, DatanodeStorage s)
{
// The ID of the last full block report which updated this storage.
this.dn = dn;
this.storageID = s.GetStorageID();
this.storageType = s.GetStorageType();
this.state = s.GetState();
}
public virtual void UpdateFromStorage(DatanodeStorage storage)
{
state = storage.GetState();
storageType = storage.GetStorageType();
}
internal virtual void Compare(DatanodeStorage dns1, DatanodeStorage dns2)
{
Assert.AssertThat(dns2.GetStorageID(), CoreMatchers.Is(dns1.GetStorageID()));
Assert.AssertThat(dns2.GetState(), CoreMatchers.Is(dns1.GetState()));
Assert.AssertThat(dns2.GetStorageType(), CoreMatchers.Is(dns1.GetStorageType()));
}
internal virtual DatanodeStorageInfo UpdateStorage(DatanodeStorage s)
{
lock (storageMap)
{
DatanodeStorageInfo storage = storageMap[s.GetStorageID()];
if (storage == null)
{
Log.Info("Adding new storage ID " + s.GetStorageID() + " for DN " + GetXferAddr()
);
storage = new DatanodeStorageInfo(this, s);
storageMap[s.GetStorageID()] = storage;
}
else
{
if (storage.GetState() != s.GetState() || storage.GetStorageType() != s.GetStorageType
())
{
// For backwards compatibility, make sure that the type and
// state are updated. Some reports from older datanodes do
// not include these fields so we may have assumed defaults.
storage.UpdateFromStorage(s);
storageMap[storage.GetStorageID()] = storage;
}
}
return(storage);
}
}
