org.apache.cassandra.service
Class StorageService

java.lang.Object
  org.apache.cassandra.service.StorageService

All Implemented Interfaces:

IEndpointStateChangeSubscriber, StorageServiceMBean

public class StorageService
extends java.lang.Object
implements IEndpointStateChangeSubscriber, StorageServiceMBean

Nested Class Summary

class	StorageService.Keyspaces
static class	StorageService.Verb

Field Summary

static StorageService	instance
static int	RING_DELAY
static RetryingScheduledThreadPoolExecutor	scheduledTasks This pool is used for periodic short time execution tasks.
static RetryingScheduledThreadPoolExecutor	tasks This pool is used by tasks that can have long execution, (and usually are non periodic).
VersionedValue.VersionedValueFactory	valueFactory
static StorageService.Verb[]	VERBS
static java.util.EnumMap<StorageService.Verb,Stage>	verbStages

Constructor Summary

StorageService()

Method Summary

static void	calculatePendingRanges(AbstractReplicationStrategy strategy, java.lang.String table)
void	clearSnapshot() Remove all the existing snapshots.
void	confirmReplication(java.net.InetAddress node)
void	decommission() transfer this node's data to other machines and remove it from service.
void	deliverHints(java.net.InetAddress endpoint) Deliver hints to the specified node when it has crashed and come back up/ marked as alive after a network partition
void	deliverHints(java.lang.String host) force hint delivery to an endpoint
void	drain() shuts node off to writes, empties memtables and the commit log.
java.lang.String	exportSchema() Introduced in 0.7 to allow schema yaml to be exported.
void	finishBootstrapping()
void	flushLargestMemtables() Flushes the two largest memtables by ops and by throughput
void	forceRemoveCompletion() Force a remove operation to complete.
void	forceTableCleanup(java.lang.String tableName, java.lang.String... columnFamilies) Trigger a cleanup of keys on a single keyspace
void	forceTableCompaction(java.lang.String tableName, java.lang.String... columnFamilies) Forces major compaction of a single keyspace
void	forceTableFlush(java.lang.String tableName, java.lang.String... columnFamilies) Flush all memtables for a table and column families.
void	forceTableRepair(java.lang.String tableName, java.lang.String... columnFamilies) Trigger proactive repair for a table and column families.
java.util.List<Range>	getAllRanges(java.util.List<Token> sortedTokens) Get all ranges that span the ring given a set of tokens.
Token	getBootstrapToken() return a token to which if a node bootstraps it will get about 1/2 of this node's range
int	getCurrentGenerationNumber() Return the generation value for this node.
java.lang.String	getDrainProgress() get the progress of a drain operation
java.util.List<java.lang.String>	getJoiningNodes() Retrieve the list of nodes currently bootstrapping into the ring.
java.util.List<java.lang.String>	getKeyspaces()
java.util.List<java.lang.String>	getLeavingNodes() Retrieve the list of nodes currently leaving the ring.
java.util.List<java.net.InetAddress>	getLiveNaturalEndpoints(java.lang.String table, java.nio.ByteBuffer key) This method attempts to return N endpoints that are responsible for storing the specified key i.e for replication.
java.util.List<java.net.InetAddress>	getLiveNaturalEndpoints(java.lang.String table, Token token)
java.util.List<java.lang.String>	getLiveNodes() Retrieve the list of live nodes in the cluster, where "liveness" is determined by the failure detector of the node being queried.
double	getLoad() raw load value
java.util.Map<java.lang.String,java.lang.String>	getLoadMap() Human-readable load value.
java.lang.String	getLoadString() Human-readable load value
Range	getLocalPrimaryRange()
java.util.Collection<Range>	getLocalRanges(java.lang.String table)
Token	getLocalToken()
java.util.List<java.net.InetAddress>	getNaturalEndpoints(java.lang.String table, byte[] key) This method returns the N endpoints that are responsible for storing the specified key i.e for replication.
java.util.List<java.net.InetAddress>	getNaturalEndpoints(java.lang.String table, java.nio.ByteBuffer key) This method returns the N endpoints that are responsible for storing the specified key i.e for replication.
java.util.List<java.net.InetAddress>	getNaturalEndpoints(java.lang.String table, Token token) This method returns the N endpoints that are responsible for storing the specified key i.e for replication.
java.lang.String	getOperationMode() get the operational mode (leaving, joining, normal, decommissioned, client)
java.util.Map<Token,java.lang.Float>	getOwnership() given a list of tokens (representing the nodes in the cluster), returns a mapping from "token -> %age of cluster owned by that token"
static IPartitioner	getPartitioner()
java.util.Map<Range,java.util.List<java.lang.String>>	getPendingRangeToEndpointMap(java.lang.String keyspace) Retrieve a map of pending ranges to endpoints that describe the ring topology
Range	getPrimaryRangeForEndpoint(java.net.InetAddress ep) Get the primary range for the specified endpoint.
java.util.Map<Range,java.util.List<java.net.InetAddress>>	getRangeToAddressMap(java.lang.String keyspace)
java.util.Map<Range,java.util.List<java.lang.String>>	getRangeToEndpointMap(java.lang.String keyspace) for a keyspace, return the ranges and corresponding hosts for a given keyspace.
java.lang.String	getReleaseVersion() Fetch a string representation of the Cassandra version.
java.lang.String	getRemovalStatus() Get the status of a token removal.
java.util.List<Token>	getSplits(java.lang.String table, java.lang.String cfName, Range range, int keysPerSplit)
java.net.InetAddress	getSuccessor(java.net.InetAddress ep)
java.lang.String	getToken() Fetch a string representation of the token.
TokenMetadata	getTokenMetadata()
java.util.Map<Token,java.lang.String>	getTokenToEndpointMap() Retrieve a map of tokens to endpoints, including the bootstrapping ones.
java.util.List<java.lang.String>	getUnreachableNodes() Retrieve the list of unreachable nodes in the cluster, as determined by this node's failure detector.
java.lang.Iterable<ColumnFamilyStore>	getValidColumnFamilies(java.lang.String tableName, java.lang.String... cfNames)
void	initClient()
void	initServer()
void	invalidateKeyCaches(java.lang.String tableName, java.lang.String... columnFamilies)
void	invalidateRowCaches(java.lang.String tableName, java.lang.String... columnFamilies)
boolean	isBootstrapMode()
boolean	isClientMode()
boolean	isInitialized()
boolean	isJoined()
boolean	isRPCServerRunning()
void	joinRing()
void	loadBalance() This node will unload its data onto its neighbors, and bootstrap to share the range of the most-loaded node in the ring.
void	loadSchemaFromYAML() load schema from yaml.
void	move(java.lang.String newToken)
void	onAlive(java.net.InetAddress endpoint, EndpointState state)
void	onChange(java.net.InetAddress endpoint, ApplicationState state, VersionedValue value)
void	onDead(java.net.InetAddress endpoint, EndpointState state)
void	onJoin(java.net.InetAddress endpoint, EndpointState epState) Use to inform interested parties about the change in the state for specified endpoint
void	onRemove(java.net.InetAddress endpoint)
void	reduceCacheSizes()
void	registerDaemon(CassandraDaemon daemon)
void	removeToken(java.lang.String tokenString) Remove a node that has died, attempting to restore the replica count.
void	requestGC()
void	saveCaches() save row and key caches
void	scrub(java.lang.String tableName, java.lang.String... columnFamilies) Scrub (deserialize + reserialize at the latest version, skipping bad rows if any) the given keyspace.
void	setLog4jLevel(java.lang.String classQualifier, java.lang.String rawLevel) set the logging level at runtime
void	setToken(Token token) This method updates the local token on disk
void	startGossiping()
void	startRPCServer()
void	stopClient()
void	stopGossiping()
void	stopRPCServer()
void	takeAllSnapshot(java.lang.String tag) Takes a snapshot for every table.
void	takeSnapshot(java.lang.String tableName, java.lang.String tag) Takes the snapshot for a given table.
void	truncate(java.lang.String keyspace, java.lang.String columnFamily) Truncates (deletes) the given columnFamily from the provided keyspace.
void	updateSnitch(java.lang.String epSnitchClassName, java.lang.Boolean dynamic, java.lang.Integer dynamicUpdateInterval, java.lang.Integer dynamicResetInterval, java.lang.Double dynamicBadnessThreshold) Change endpointsnitch class and dynamic-ness (and dynamic attributes) at runtime
boolean	useEfficientCrossDCWrites()

Methods inherited from class java.lang.Object

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

Field Detail

RING_DELAY

public static final int RING_DELAY

See Also:

Constant Field Values

VERBS

public static final StorageService.Verb[] VERBS

verbStages

public static final java.util.EnumMap<StorageService.Verb,Stage> verbStages

scheduledTasks

public static final RetryingScheduledThreadPoolExecutor scheduledTasks

This pool is used for periodic short time execution tasks.

tasks

public static final RetryingScheduledThreadPoolExecutor tasks

This pool is used by tasks that can have long execution, (and usually are non periodic).

valueFactory

public VersionedValue.VersionedValueFactory valueFactory

instance

public static final StorageService instance

Constructor Detail

StorageService

public StorageService()

Method Detail

getPartitioner

public static IPartitioner getPartitioner()

getLocalRanges

public java.util.Collection<Range> getLocalRanges(java.lang.String table)

getLocalPrimaryRange

public Range getLocalPrimaryRange()

finishBootstrapping

public void finishBootstrapping()

setToken

public void setToken(Token token)

This method updates the local token on disk

registerDaemon

public void registerDaemon(CassandraDaemon daemon)

stopGossiping

public void stopGossiping()

Specified by:

stopGossiping in interface StorageServiceMBean

startGossiping

public void startGossiping()

Specified by:

startGossiping in interface StorageServiceMBean

startRPCServer

public void startRPCServer()

Specified by:

startRPCServer in interface StorageServiceMBean

stopRPCServer

public void stopRPCServer()

Specified by:

stopRPCServer in interface StorageServiceMBean

isRPCServerRunning

public boolean isRPCServerRunning()

Specified by:

isRPCServerRunning in interface StorageServiceMBean

stopClient

public void stopClient()

isInitialized

public boolean isInitialized()

Specified by:

isInitialized in interface StorageServiceMBean

initClient

public void initClient()
                throws java.io.IOException,
                       ConfigurationException

Throws:

java.io.IOException

ConfigurationException

initServer

public void initServer()
                throws java.io.IOException,
                       ConfigurationException

Throws:

java.io.IOException

ConfigurationException

joinRing

public void joinRing()
              throws java.io.IOException,
                     ConfigurationException

Specified by:

joinRing in interface StorageServiceMBean

Throws:

java.io.IOException

ConfigurationException

isJoined

public boolean isJoined()

Specified by:

isJoined in interface StorageServiceMBean

isBootstrapMode

public boolean isBootstrapMode()

getTokenMetadata

public TokenMetadata getTokenMetadata()

getRangeToEndpointMap

public java.util.Map<Range,java.util.List<java.lang.String>> getRangeToEndpointMap(java.lang.String keyspace)

for a keyspace, return the ranges and corresponding hosts for a given keyspace.

Specified by:

getRangeToEndpointMap in interface StorageServiceMBean

Parameters:

keyspace -

Returns:

getPendingRangeToEndpointMap

public java.util.Map<Range,java.util.List<java.lang.String>> getPendingRangeToEndpointMap(java.lang.String keyspace)

Description copied from interface: StorageServiceMBean

Retrieve a map of pending ranges to endpoints that describe the ring topology

Specified by:

getPendingRangeToEndpointMap in interface StorageServiceMBean

Parameters:

keyspace - the keyspace to get the pending range map for.

Returns:

a map of pending ranges to endpoints

getRangeToAddressMap

public java.util.Map<Range,java.util.List<java.net.InetAddress>> getRangeToAddressMap(java.lang.String keyspace)

getTokenToEndpointMap

public java.util.Map<Token,java.lang.String> getTokenToEndpointMap()

Description copied from interface: StorageServiceMBean

Retrieve a map of tokens to endpoints, including the bootstrapping ones.

Specified by:

getTokenToEndpointMap in interface StorageServiceMBean

Returns:

a map of tokens to endpoints

onChange

public void onChange(java.net.InetAddress endpoint,
                     ApplicationState state,
                     VersionedValue value)

Specified by:

onChange in interface IEndpointStateChangeSubscriber

calculatePendingRanges

public static void calculatePendingRanges(AbstractReplicationStrategy strategy,
                                          java.lang.String table)

onJoin

public void onJoin(java.net.InetAddress endpoint,
                   EndpointState epState)

Description copied from interface: IEndpointStateChangeSubscriber

Use to inform interested parties about the change in the state for specified endpoint

Specified by:

onJoin in interface IEndpointStateChangeSubscriber

Parameters:

endpoint - endpoint for which the state change occurred.

epState - state that actually changed for the above endpoint.

onAlive

public void onAlive(java.net.InetAddress endpoint,
                    EndpointState state)

Specified by:

onAlive in interface IEndpointStateChangeSubscriber

onRemove

public void onRemove(java.net.InetAddress endpoint)

Specified by:

onRemove in interface IEndpointStateChangeSubscriber

onDead

public void onDead(java.net.InetAddress endpoint,
                   EndpointState state)

Specified by:

onDead in interface IEndpointStateChangeSubscriber

getLoad

public double getLoad()

raw load value

Specified by:

getLoad in interface StorageServiceMBean

getLoadString

public java.lang.String getLoadString()

Description copied from interface: StorageServiceMBean

Human-readable load value

Specified by:

getLoadString in interface StorageServiceMBean

getLoadMap

public java.util.Map<java.lang.String,java.lang.String> getLoadMap()

Description copied from interface: StorageServiceMBean

Human-readable load value. Keys are IP addresses.

Specified by:

getLoadMap in interface StorageServiceMBean

deliverHints

public final void deliverHints(java.net.InetAddress endpoint)

Deliver hints to the specified node when it has crashed and come back up/ marked as alive after a network partition

deliverHints

public final void deliverHints(java.lang.String host)
                        throws java.net.UnknownHostException

Description copied from interface: StorageServiceMBean

force hint delivery to an endpoint

Specified by:

deliverHints in interface StorageServiceMBean

Throws:

java.net.UnknownHostException

getLocalToken

public Token getLocalToken()

getToken

public java.lang.String getToken()

Description copied from interface: StorageServiceMBean

Fetch a string representation of the token.

Specified by:

getToken in interface StorageServiceMBean

Returns:

a string token

getReleaseVersion

public java.lang.String getReleaseVersion()

Description copied from interface: StorageServiceMBean

Fetch a string representation of the Cassandra version.

Specified by:

getReleaseVersion in interface StorageServiceMBean

Returns:

A string representation of the Cassandra version.

getLeavingNodes

public java.util.List<java.lang.String> getLeavingNodes()

Description copied from interface: StorageServiceMBean

Retrieve the list of nodes currently leaving the ring.

Specified by:

getLeavingNodes in interface StorageServiceMBean

Returns:

set of IP addresses, as Strings

getJoiningNodes

public java.util.List<java.lang.String> getJoiningNodes()

Description copied from interface: StorageServiceMBean

Retrieve the list of nodes currently bootstrapping into the ring.

Specified by:

getJoiningNodes in interface StorageServiceMBean

Returns:

set of IP addresses, as Strings

getLiveNodes

public java.util.List<java.lang.String> getLiveNodes()

Description copied from interface: StorageServiceMBean

Retrieve the list of live nodes in the cluster, where "liveness" is determined by the failure detector of the node being queried.

Specified by:

getLiveNodes in interface StorageServiceMBean

Returns:

set of IP addresses, as Strings

getUnreachableNodes

public java.util.List<java.lang.String> getUnreachableNodes()

Description copied from interface: StorageServiceMBean

Retrieve the list of unreachable nodes in the cluster, as determined by this node's failure detector.

Specified by:

getUnreachableNodes in interface StorageServiceMBean

Returns:

set of IP addresses, as Strings

getCurrentGenerationNumber

public int getCurrentGenerationNumber()

Description copied from interface: StorageServiceMBean

Return the generation value for this node.

Specified by:

getCurrentGenerationNumber in interface StorageServiceMBean

Returns:

generation number

forceTableCleanup

public void forceTableCleanup(java.lang.String tableName,
                              java.lang.String... columnFamilies)
                       throws java.io.IOException,
                              java.util.concurrent.ExecutionException,
                              java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

Trigger a cleanup of keys on a single keyspace

Specified by:

forceTableCleanup in interface StorageServiceMBean

Throws:

java.io.IOException

java.util.concurrent.ExecutionException

java.lang.InterruptedException

scrub

public void scrub(java.lang.String tableName,
                  java.lang.String... columnFamilies)
           throws java.io.IOException,
                  java.util.concurrent.ExecutionException,
                  java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

Scrub (deserialize + reserialize at the latest version, skipping bad rows if any) the given keyspace. If columnFamilies array is empty, all CFs are scrubbed. Scrubbed CFs will be snapshotted first.

Specified by:

scrub in interface StorageServiceMBean

Throws:

java.io.IOException

java.util.concurrent.ExecutionException

java.lang.InterruptedException

forceTableCompaction

public void forceTableCompaction(java.lang.String tableName,
                                 java.lang.String... columnFamilies)
                          throws java.io.IOException,
                                 java.util.concurrent.ExecutionException,
                                 java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

Forces major compaction of a single keyspace

Specified by:

forceTableCompaction in interface StorageServiceMBean

Throws:

java.io.IOException

java.util.concurrent.ExecutionException

java.lang.InterruptedException

invalidateKeyCaches

public void invalidateKeyCaches(java.lang.String tableName,
                                java.lang.String... columnFamilies)
                         throws java.io.IOException

Specified by:

invalidateKeyCaches in interface StorageServiceMBean

Throws:

java.io.IOException

invalidateRowCaches

public void invalidateRowCaches(java.lang.String tableName,
                                java.lang.String... columnFamilies)
                         throws java.io.IOException

Specified by:

invalidateRowCaches in interface StorageServiceMBean

Throws:

java.io.IOException

takeSnapshot

public void takeSnapshot(java.lang.String tableName,
                         java.lang.String tag)
                  throws java.io.IOException

Takes the snapshot for a given table.

Specified by:

takeSnapshot in interface StorageServiceMBean

Parameters:

tableName - the name of the table.

tag - the tag given to the snapshot (null is permissible)

Throws:

java.io.IOException

takeAllSnapshot

public void takeAllSnapshot(java.lang.String tag)
                     throws java.io.IOException

Takes a snapshot for every table.

Specified by:

takeAllSnapshot in interface StorageServiceMBean

Parameters:

tag - the tag given to the snapshot (null is permissible)

Throws:

java.io.IOException

clearSnapshot

public void clearSnapshot()
                   throws java.io.IOException

Remove all the existing snapshots.

Specified by:

clearSnapshot in interface StorageServiceMBean

Throws:

java.io.IOException

getValidColumnFamilies

public java.lang.Iterable<ColumnFamilyStore> getValidColumnFamilies(java.lang.String tableName,
                                                                    java.lang.String... cfNames)
                                                             throws java.io.IOException

Throws:

java.io.IOException

forceTableFlush

public void forceTableFlush(java.lang.String tableName,
                            java.lang.String... columnFamilies)
                     throws java.io.IOException,
                            java.util.concurrent.ExecutionException,
                            java.lang.InterruptedException

Flush all memtables for a table and column families.

Specified by:

forceTableFlush in interface StorageServiceMBean

Parameters:

tableName -

columnFamilies -

Throws:

java.io.IOException

java.util.concurrent.ExecutionException

java.lang.InterruptedException

forceTableRepair

public void forceTableRepair(java.lang.String tableName,
                             java.lang.String... columnFamilies)
                      throws java.io.IOException

Trigger proactive repair for a table and column families.

Specified by:

forceTableRepair in interface StorageServiceMBean

Parameters:

tableName -

columnFamilies -

Throws:

java.io.IOException

getSuccessor

public java.net.InetAddress getSuccessor(java.net.InetAddress ep)

getPrimaryRangeForEndpoint

public Range getPrimaryRangeForEndpoint(java.net.InetAddress ep)

Get the primary range for the specified endpoint.

Parameters:

ep - endpoint we are interested in.

Returns:

range for the specified endpoint.

getAllRanges

public java.util.List<Range> getAllRanges(java.util.List<Token> sortedTokens)

Get all ranges that span the ring given a set of tokens. All ranges are in sorted order of ranges.

Returns:

ranges in sorted order

getNaturalEndpoints

public java.util.List<java.net.InetAddress> getNaturalEndpoints(java.lang.String table,
                                                                java.nio.ByteBuffer key)

This method returns the N endpoints that are responsible for storing the specified key i.e for replication.

Parameters:

key - - key for which we need to find the endpoint return value - the endpoint responsible for this key

getNaturalEndpoints

public java.util.List<java.net.InetAddress> getNaturalEndpoints(java.lang.String table,
                                                                byte[] key)

Description copied from interface: StorageServiceMBean

This method returns the N endpoints that are responsible for storing the specified key i.e for replication.

Specified by:

getNaturalEndpoints in interface StorageServiceMBean

key - - key for which we need to find the endpoint return value - the endpoint responsible for this key

getNaturalEndpoints

public java.util.List<java.net.InetAddress> getNaturalEndpoints(java.lang.String table,
                                                                Token token)

This method returns the N endpoints that are responsible for storing the specified key i.e for replication.

Parameters:

token - - token for which we need to find the endpoint return value - the endpoint responsible for this token

getLiveNaturalEndpoints

public java.util.List<java.net.InetAddress> getLiveNaturalEndpoints(java.lang.String table,
                                                                    java.nio.ByteBuffer key)

This method attempts to return N endpoints that are responsible for storing the specified key i.e for replication.

Parameters:

key - - key for which we need to find the endpoint return value - the endpoint responsible for this key

getLiveNaturalEndpoints

public java.util.List<java.net.InetAddress> getLiveNaturalEndpoints(java.lang.String table,
                                                                    Token token)

setLog4jLevel

public void setLog4jLevel(java.lang.String classQualifier,
                          java.lang.String rawLevel)

Description copied from interface: StorageServiceMBean

set the logging level at runtime

Specified by:

setLog4jLevel in interface StorageServiceMBean

getSplits

public java.util.List<Token> getSplits(java.lang.String table,
                                       java.lang.String cfName,
                                       Range range,
                                       int keysPerSplit)

Returns:

list of Tokens (_not_ keys!) breaking up the data this node is responsible for into pieces of roughly keysPerSplit

getBootstrapToken

public Token getBootstrapToken()

return a token to which if a node bootstraps it will get about 1/2 of this node's range

decommission

public void decommission()
                  throws java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

transfer this node's data to other machines and remove it from service.

Specified by:

decommission in interface StorageServiceMBean

Throws:

java.lang.InterruptedException

move

public void move(java.lang.String newToken)
          throws java.io.IOException,
                 java.lang.InterruptedException

Specified by:

move in interface StorageServiceMBean

Parameters:

newToken - token to move this node to. This node will unload its data onto its neighbors, and bootstrap to the new token.

Throws:

java.io.IOException

java.lang.InterruptedException

loadBalance

public void loadBalance()
                 throws java.io.IOException,
                        java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

This node will unload its data onto its neighbors, and bootstrap to share the range of the most-loaded node in the ring.

Specified by:

loadBalance in interface StorageServiceMBean

Throws:

java.io.IOException

java.lang.InterruptedException

getRemovalStatus

public java.lang.String getRemovalStatus()

Get the status of a token removal.

Specified by:

getRemovalStatus in interface StorageServiceMBean

forceRemoveCompletion

public void forceRemoveCompletion()

Force a remove operation to complete. This may be necessary if a remove operation blocks forever due to node/stream failure. removeToken() must be called first, this is a last resort measure. No further attempt will be made to restore replicas.

Specified by:

forceRemoveCompletion in interface StorageServiceMBean

removeToken

public void removeToken(java.lang.String tokenString)

Remove a node that has died, attempting to restore the replica count. If the node is alive, decommission should be attempted. If decommission fails, then removeToken should be called. If we fail while trying to restore the replica count, finally forceRemoveCompleteion should be called to forcibly remove the node without regard to replica count.

Specified by:

removeToken in interface StorageServiceMBean

Parameters:

tokenString - token for the node

confirmReplication

public void confirmReplication(java.net.InetAddress node)

isClientMode

public boolean isClientMode()

requestGC

public void requestGC()

getOperationMode

public java.lang.String getOperationMode()

Description copied from interface: StorageServiceMBean

get the operational mode (leaving, joining, normal, decommissioned, client)

Specified by:

getOperationMode in interface StorageServiceMBean

getDrainProgress

public java.lang.String getDrainProgress()

Description copied from interface: StorageServiceMBean

get the progress of a drain operation

Specified by:

getDrainProgress in interface StorageServiceMBean

drain

public void drain()
           throws java.io.IOException,
                  java.lang.InterruptedException,
                  java.util.concurrent.ExecutionException

shuts node off to writes, empties memtables and the commit log.

Specified by:

drain in interface StorageServiceMBean

Throws:

java.io.IOException

java.lang.InterruptedException

java.util.concurrent.ExecutionException

loadSchemaFromYAML

public void loadSchemaFromYAML()
                        throws ConfigurationException,
                               java.io.IOException

load schema from yaml. This can only be done on a fresh system.

Specified by:

loadSchemaFromYAML in interface StorageServiceMBean

Throws:

ConfigurationException

java.io.IOException

exportSchema

public java.lang.String exportSchema()
                              throws java.io.IOException

Description copied from interface: StorageServiceMBean

Introduced in 0.7 to allow schema yaml to be exported.

Specified by:

exportSchema in interface StorageServiceMBean

Throws:

java.io.IOException

truncate

public void truncate(java.lang.String keyspace,
                     java.lang.String columnFamily)
              throws UnavailableException,
                     java.util.concurrent.TimeoutException,
                     java.io.IOException

Description copied from interface: StorageServiceMBean

Truncates (deletes) the given columnFamily from the provided keyspace. Calling truncate results in actual deletion of all data in the cluster under the given columnFamily and it will fail unless all hosts are up. All data in the given column family will be deleted, but its definition will not be affected.

Specified by:

truncate in interface StorageServiceMBean

Parameters:

keyspace - The keyspace to delete from

columnFamily - The column family to delete data from.

Throws:

UnavailableException - if some of the hosts in the ring are down.

java.util.concurrent.TimeoutException

java.io.IOException

saveCaches

public void saveCaches()
                throws java.util.concurrent.ExecutionException,
                       java.lang.InterruptedException

Description copied from interface: StorageServiceMBean

save row and key caches

Specified by:

saveCaches in interface StorageServiceMBean

Throws:

java.util.concurrent.ExecutionException

java.lang.InterruptedException

getOwnership

public java.util.Map<Token,java.lang.Float> getOwnership()

Description copied from interface: StorageServiceMBean

given a list of tokens (representing the nodes in the cluster), returns a mapping from "token -> %age of cluster owned by that token"

Specified by:

getOwnership in interface StorageServiceMBean

getKeyspaces

public java.util.List<java.lang.String> getKeyspaces()

Specified by:

getKeyspaces in interface StorageServiceMBean

updateSnitch

public void updateSnitch(java.lang.String epSnitchClassName,
                         java.lang.Boolean dynamic,
                         java.lang.Integer dynamicUpdateInterval,
                         java.lang.Integer dynamicResetInterval,
                         java.lang.Double dynamicBadnessThreshold)
                  throws ConfigurationException

Description copied from interface: StorageServiceMBean

Change endpointsnitch class and dynamic-ness (and dynamic attributes) at runtime

Specified by:

updateSnitch in interface StorageServiceMBean

Parameters:

epSnitchClassName - the canonical path name for a class implementing IEndpointSnitch

dynamic - boolean that decides whether dynamicsnitch is used or not

dynamicUpdateInterval - integer, in ms (default 100)

dynamicResetInterval - integer, in ms (default 600,000)

dynamicBadnessThreshold - double, (default 0.0)

Throws:

ConfigurationException - classname not found on classpath

useEfficientCrossDCWrites

public boolean useEfficientCrossDCWrites()

flushLargestMemtables

public void flushLargestMemtables()

Flushes the two largest memtables by ops and by throughput

reduceCacheSizes

public void reduceCacheSizes()