Package org.apache.hadoop.yarn.nodelabels.store

Interface StoreOp<W,R,M>

Type Parameters:

W - write to be done to

R - read to be done from

M - manager used

All Known Implementing Classes:

AddClusterLabelOp, AddNodeToAttributeLogOp, FSNodeStoreLogOp, NodeAttributeMirrorOp, NodeLabelMirrorOp, NodeToLabelOp, RemoveClusterLabelOp, RemoveNodeToAttributeLogOp, ReplaceNodeToAttributeLogOp

public interface StoreOp<W,R,M>

Define the interface for store activity. Used by for FileSystem based operation.

Method Summary

Modifier and Type	Method	Description
void	recover(R read, M mgr)	Read and populate StoreOp.
void	write(W write, M mgr)	Write operation to persistent storage.

Method Detail

write

void write(W write,
           M mgr)
    throws java.io.IOException

Write operation to persistent storage.

Parameters:

write - write to be done to

mgr - manager used by store

Throws:

java.io.IOException - io error occur.

recover

void recover(R read,
             M mgr)
      throws java.io.IOException

Read and populate StoreOp.

Parameters:

read - read to be done from

mgr - manager used by store

Throws:

java.io.IOException - io error occur.