org.apache.ignite.internal.visor.tx

Class FetchNearXidVersionTask

java.lang.Object

org.apache.ignite.internal.visor.VisorMultiNodeTask<TxVerboseId,GridCacheVersion,GridCacheVersion>

org.apache.ignite.internal.visor.tx.FetchNearXidVersionTask

All Implemented Interfaces:

Serializable, ComputeTask<VisorTaskArgument<TxVerboseId>,GridCacheVersion>

@GridInternal
public class FetchNearXidVersionTask
extends VisorMultiNodeTask<TxVerboseId,GridCacheVersion,GridCacheVersion>

Retrieves unique transaction identifier (nearXid) from UUID/GridCacheVersion of xid/nearXid.

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.ignite.internal.visor.VisorMultiNodeTask

debug, ignite, start, taskArg

Constructor Summary

Constructors

Constructor and Description
FetchNearXidVersionTask()

Method Summary

Modifier and Type	Method and Description
protected VisorJob<TxVerboseId,GridCacheVersion>	job(TxVerboseId arg)
protected Collection<UUID>	jobNodes(VisorTaskArgument<TxVerboseId> arg)
protected GridCacheVersion	reduce0(List<ComputeJobResult> results) Actual reduce logic.

Methods inherited from class org.apache.ignite.internal.visor.VisorMultiNodeTask

map, map0, reduce, result

Methods inherited from class java.lang.Object

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

Constructor Detail

FetchNearXidVersionTask

public FetchNearXidVersionTask()

Method Detail

job

protected VisorJob<TxVerboseId,GridCacheVersion> job(TxVerboseId arg)

Specified by:

job in class VisorMultiNodeTask<TxVerboseId,GridCacheVersion,GridCacheVersion>

Parameters:

arg - Task arg.

Returns:

New job.

reduce0

protected GridCacheVersion reduce0(List<ComputeJobResult> results)
                            throws IgniteException

Actual reduce logic.

Specified by:

reduce0 in class VisorMultiNodeTask<TxVerboseId,GridCacheVersion,GridCacheVersion>

Parameters:

results - Job results.

Returns:

Task result.

Throws:

IgniteException - If reduction or results caused an error.

jobNodes

protected Collection<UUID> jobNodes(VisorTaskArgument<TxVerboseId> arg)

Overrides:

jobNodes in class VisorMultiNodeTask<TxVerboseId,GridCacheVersion,GridCacheVersion>

Returns:

Collection of nodes IDs where jobs should be mapped.