org.gridgain.grid.ggfs

Interface GridGgfsBlockLocation

public interface GridGgfsBlockLocation

GGFS file's data block location in the grid. It is used to determine node affinity of a certain file block within the Grid by calling GridGgfs.affinity(GridGgfsPath, long, long) method.

Method Summary

Methods

Modifier and Type	Method and Description
Collection<String>	hosts() Compliant with Hadoop interface.
long	length() Length of the data block in the file.
Collection<String>	names() Compliant with Hadoop interface.
Collection<UUID>	nodeIds() Nodes this block belongs to.
long	start() Start position in the file this block relates to.

Method Detail

start

long start()

Start position in the file this block relates to.

Returns:

Start position in the file this block relates to.

length

long length()

Length of the data block in the file.

Returns:

Length of the data block in the file.

nodeIds

Collection<UUID> nodeIds()

Nodes this block belongs to. First node id in collection is primary node id.

Returns:

Nodes this block belongs to.

names

Collection<String> names()

Compliant with Hadoop interface.

Returns:

Collection of host:port addresses.

hosts

Collection<String> hosts()

Compliant with Hadoop interface.

Returns:

Collection of host names.