org.apache.cassandra.service

Class ActiveRepairService

java.lang.Object

org.apache.cassandra.service.ActiveRepairService

public class ActiveRepairService
extends java.lang.Object

ActiveRepairService is the starting point for manual "active" repairs. Each user triggered repair will correspond to one or multiple repair session, one for each token range to repair. On repair session might repair multiple column families. For each of those column families, the repair session will request merkle trees for each replica of the range being repaired, diff those trees upon receiving them, schedule the streaming ofthe parts to repair (based on the tree diffs) and wait for all those operation. See RepairSession for more details. The creation of a repair session is done through the submitRepairSession that returns a future on the completion of that session.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ActiveRepairService.Status

Field Summary

Fields

Modifier and Type	Field and Description
static ActiveRepairService	instance

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ActiveRepairService() Protected constructor.

Method Summary

Methods

Modifier and Type	Method and Description
void	addToActiveSessions(RepairSession session)
static java.util.Set<java.net.InetAddress>	getNeighbors(java.lang.String keyspaceName, Range<Token> toRepair, java.util.Collection<java.lang.String> dataCenters, java.util.Collection<java.lang.String> hosts) Return all of the neighbors with whom we share the provided range.
void	handleMessage(java.net.InetAddress endpoint, RepairMessage message)
void	removeFromActiveSessions(RepairSession session)
RepairFuture	submitRepairSession(Range<Token> range, java.lang.String keyspace, RepairParallelism parallelismDegree, java.util.Collection<java.lang.String> dataCenters, java.util.Collection<java.lang.String> hosts, java.lang.String... cfnames) Requests repairs for the given keyspace and column families.
void	terminateSessions()

Methods inherited from class java.lang.Object

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

Field Detail

instance

public static final ActiveRepairService instance

Constructor Detail

ActiveRepairService

protected ActiveRepairService()

Protected constructor. Use ActiveRepairService.instance.

Method Detail

submitRepairSession

public RepairFuture submitRepairSession(Range<Token> range,
                               java.lang.String keyspace,
                               RepairParallelism parallelismDegree,
                               java.util.Collection<java.lang.String> dataCenters,
                               java.util.Collection<java.lang.String> hosts,
                               java.lang.String... cfnames)

Requests repairs for the given keyspace and column families.

Returns:

Future for asynchronous call or null if there is no need to repair

addToActiveSessions

public void addToActiveSessions(RepairSession session)

removeFromActiveSessions

public void removeFromActiveSessions(RepairSession session)

terminateSessions

public void terminateSessions()

getNeighbors

public static java.util.Set<java.net.InetAddress> getNeighbors(java.lang.String keyspaceName,
                                               Range<Token> toRepair,
                                               java.util.Collection<java.lang.String> dataCenters,
                                               java.util.Collection<java.lang.String> hosts)

Return all of the neighbors with whom we share the provided range.

Parameters:

keyspaceName - keyspace to repair

toRepair - token to repair

dataCenters - the data centers to involve in the repair

Returns:

neighbors with whom we share the provided range

handleMessage

public void handleMessage(java.net.InetAddress endpoint,
                 RepairMessage message)