org.apache.flink.runtime.accumulators

Class AccumulatorSnapshot

java.lang.Object

org.apache.flink.runtime.accumulators.AccumulatorSnapshot

All Implemented Interfaces:

Serializable

public class AccumulatorSnapshot
extends Object
implements Serializable

This class encapsulates a map of accumulators for a single task. It is used for the transfer from TaskManagers to the JobManager and from the JobManager to the Client.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
AccumulatorSnapshot(org.apache.flink.api.common.JobID jobID, ExecutionAttemptID executionAttemptID, Map<AccumulatorRegistry.Metric,org.apache.flink.api.common.accumulators.Accumulator<?,?>> flinkAccumulators, Map<String,org.apache.flink.api.common.accumulators.Accumulator<?,?>> userAccumulators)

Method Summary

Modifier and Type	Method and Description
Map<AccumulatorRegistry.Metric,org.apache.flink.api.common.accumulators.Accumulator<?,?>>	deserializeFlinkAccumulators() Gets the Flink (internal) accumulators values.
Map<String,org.apache.flink.api.common.accumulators.Accumulator<?,?>>	deserializeUserAccumulators(ClassLoader classLoader) Gets the user-defined accumulators values.
ExecutionAttemptID	getExecutionAttemptID()
org.apache.flink.api.common.JobID	getJobID()

Methods inherited from class java.lang.Object

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

Constructor Detail

AccumulatorSnapshot

public AccumulatorSnapshot(org.apache.flink.api.common.JobID jobID,
                           ExecutionAttemptID executionAttemptID,
                           Map<AccumulatorRegistry.Metric,org.apache.flink.api.common.accumulators.Accumulator<?,?>> flinkAccumulators,
                           Map<String,org.apache.flink.api.common.accumulators.Accumulator<?,?>> userAccumulators)
                    throws IOException

Throws:

IOException

Method Detail

getJobID

public org.apache.flink.api.common.JobID getJobID()

getExecutionAttemptID

public ExecutionAttemptID getExecutionAttemptID()

deserializeFlinkAccumulators

public Map<AccumulatorRegistry.Metric,org.apache.flink.api.common.accumulators.Accumulator<?,?>> deserializeFlinkAccumulators()
                                                                                                                       throws IOException,
                                                                                                                              ClassNotFoundException

Gets the Flink (internal) accumulators values.

Returns:

the serialized map

Throws:

IOException

ClassNotFoundException

deserializeUserAccumulators

public Map<String,org.apache.flink.api.common.accumulators.Accumulator<?,?>> deserializeUserAccumulators(ClassLoader classLoader)
                                                                                                  throws IOException,
                                                                                                         ClassNotFoundException

Gets the user-defined accumulators values.

Returns:

the serialized map

Throws:

IOException

ClassNotFoundException