org.apache.tez.common

Interface TezTaskUmbilicalProtocol

All Superinterfaces:

org.apache.hadoop.ipc.VersionedProtocol

@InterfaceAudience.Private
@InterfaceStability.Stable
public interface TezTaskUmbilicalProtocol
extends org.apache.hadoop.ipc.VersionedProtocol

Protocol that task child process uses to contact its parent process. The parent is a daemon which which polls the central master for a new map or reduce task and runs it as a child process. All communication between child and parent is via this protocol.

Field Summary

Fields

Modifier and Type	Field and Description
static long	versionID

Method Summary

Methods

Modifier and Type	Method and Description
boolean	canCommit(org.apache.tez.dag.records.TezTaskAttemptID taskid)
ContainerTask	getTask(ContainerContext containerContext)
TezHeartbeatResponse	heartbeat(TezHeartbeatRequest request)

Methods inherited from interface org.apache.hadoop.ipc.VersionedProtocol

getProtocolSignature, getProtocolVersion

Field Detail

versionID

static final long versionID

See Also:

Constant Field Values

Method Detail

getTask

ContainerTask getTask(ContainerContext containerContext)
                      throws IOException

Throws:

IOException

canCommit

boolean canCommit(org.apache.tez.dag.records.TezTaskAttemptID taskid)
                  throws IOException

Throws:

IOException

heartbeat

TezHeartbeatResponse heartbeat(TezHeartbeatRequest request)
                               throws IOException,
                                      org.apache.tez.dag.api.TezException

Throws:

IOException

org.apache.tez.dag.api.TezException