Package org.apache.hadoop.hdfs.server.federation.router

Class RouterFederationRename

java.lang.Object

org.apache.hadoop.hdfs.server.federation.router.RouterFederationRename

@Private
@Unstable
public class RouterFederationRename
extends Object

Rename across router federation namespaces based on federation balance. Both the src and the dst coming from different namespaces need to have only one destination. Snapshot paths are not allowed. Users need write privilege of both src parent and dst parent to do router federation rename.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	RouterFederationRename.RouterRenameOption

Constructor Summary

Constructors

Constructor	Description
RouterFederationRename(RouterRpcServer rpcServer, org.apache.hadoop.conf.Configuration conf)

Method Summary

Modifier and Type	Method	Description
int	getRouterFederationRenameCount()
boolean	routerFedRename(String src, String dst, List<RemoteLocation> srcLocations, List<RemoteLocation> dstLocations)	Router federation rename across namespaces.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RouterFederationRename

public RouterFederationRename(RouterRpcServer rpcServer,
 org.apache.hadoop.conf.Configuration conf)

Method Details

routerFedRename

public boolean routerFedRename(String src,
 String dst,
 List<RemoteLocation> srcLocations,
 List<RemoteLocation> dstLocations)
                        throws IOException

Router federation rename across namespaces.

Parameters:

src - the source path. There is no mount point under the src path.

dst - the dst path.

srcLocations - the remote locations of src.

dstLocations - the remote locations of dst.

Returns:

true if rename succeeds.

Throws:

IOException - if rename fails.

getRouterFederationRenameCount

public int getRouterFederationRenameCount()