alluxio.master.keyvalue

Class DefaultKeyValueMaster

java.lang.Object

alluxio.master.AbstractMaster

alluxio.master.keyvalue.DefaultKeyValueMaster

All Implemented Interfaces:

JournalEntryIterable, JournalEntryStateMachine, KeyValueMaster, Master, Server<java.lang.Boolean>

@ThreadSafe
public class DefaultKeyValueMaster
extends AbstractMaster
implements KeyValueMaster

This master stores key-value store information in Alluxio, including the partitions of each key-value store.

Nested Class Summary

Nested classes/interfaces inherited from class alluxio.master.AbstractMaster

AbstractMaster.MasterJournalContext

Field Summary

Fields inherited from class alluxio.master.AbstractMaster

mClock

Method Summary

Modifier and Type	Method and Description
void	completePartition(AlluxioURI path, PartitionInfo info) Marks a partition complete and adds it to an incomplete key-value store.
void	completeStore(AlluxioURI path) Marks a key-value store complete.
void	createStore(AlluxioURI path) Creates a new key-value store.
void	deleteStore(AlluxioURI uri) Deletes a completed key-value store.
java.util.Set<java.lang.Class<? extends Server>>	getDependencies()
java.util.Iterator<Journal.JournalEntry>	getJournalEntryIterator()
java.lang.String	getName()
java.util.List<PartitionInfo>	getPartitionInfo(AlluxioURI path) Gets a list of partitions of a given key-value store.
java.util.Map<java.lang.String,org.apache.thrift.TProcessor>	getServices()
void	mergeStore(AlluxioURI fromUri, AlluxioURI toUri) Merges one completed key-value store to another completed key-value store.
void	processJournalEntry(Journal.JournalEntry entry)
void	renameStore(AlluxioURI oldUri, AlluxioURI newUri) Renames one completed key-value store.
void	resetState()
void	start(java.lang.Boolean isLeader)

Methods inherited from class alluxio.master.AbstractMaster

appendJournalEntry, createJournalContext, flushJournal, getExecutorService, stop, writeJournalEntry

Methods inherited from class java.lang.Object

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

Methods inherited from interface alluxio.Server

stop

Method Detail

getServices

public java.util.Map<java.lang.String,org.apache.thrift.TProcessor> getServices()

Specified by:

getServices in interface Server<java.lang.Boolean>

getName

public java.lang.String getName()

Specified by:

getName in interface JournalEntryStateMachine

Specified by:

getName in interface Server<java.lang.Boolean>

getDependencies

public java.util.Set<java.lang.Class<? extends Server>> getDependencies()

Specified by:

getDependencies in interface Server<java.lang.Boolean>

Overrides:

getDependencies in class AbstractMaster

processJournalEntry

public void processJournalEntry(Journal.JournalEntry entry)
                         throws java.io.IOException

Specified by:

processJournalEntry in interface JournalEntryStateMachine

Throws:

java.io.IOException

resetState

public void resetState()

Specified by:

resetState in interface JournalEntryStateMachine

getJournalEntryIterator

public java.util.Iterator<Journal.JournalEntry> getJournalEntryIterator()

Specified by:

getJournalEntryIterator in interface JournalEntryIterable

start

public void start(java.lang.Boolean isLeader)
           throws java.io.IOException

Specified by:

start in interface Server<java.lang.Boolean>

Overrides:

start in class AbstractMaster

Throws:

java.io.IOException

completePartition

public void completePartition(AlluxioURI path,
                              PartitionInfo info)
                       throws AccessControlException,
                              FileDoesNotExistException,
                              InvalidPathException

Description copied from interface: KeyValueMaster

Marks a partition complete and adds it to an incomplete key-value store.

Specified by:

completePartition in interface KeyValueMaster

Parameters:

path - URI of the key-value store

info - information of this completed partition

Throws:

AccessControlException - if permission checking fails

FileDoesNotExistException - if the key-value store URI does not exists

InvalidPathException - if the path is invalid

completeStore

public void completeStore(AlluxioURI path)
                   throws FileDoesNotExistException,
                          InvalidPathException,
                          AccessControlException

Description copied from interface: KeyValueMaster

Marks a key-value store complete.

Specified by:

completeStore in interface KeyValueMaster

Parameters:

path - URI of the key-value store

Throws:

FileDoesNotExistException - if the key-value store URI does not exists

InvalidPathException - if the path is not valid

AccessControlException - if permission checking fails

createStore

public void createStore(AlluxioURI path)
                 throws FileAlreadyExistsException,
                        InvalidPathException,
                        AccessControlException

Description copied from interface: KeyValueMaster

Creates a new key-value store.

Specified by:

createStore in interface KeyValueMaster

Parameters:

path - URI of the key-value store

Throws:

FileAlreadyExistsException - if a key-value store URI exists

InvalidPathException - if the given path is invalid

AccessControlException - if permission checking fails

deleteStore

public void deleteStore(AlluxioURI uri)
                 throws java.io.IOException,
                        InvalidPathException,
                        FileDoesNotExistException,
                        AlluxioException

Description copied from interface: KeyValueMaster

Deletes a completed key-value store.

Specified by:

deleteStore in interface KeyValueMaster

Parameters:

uri - AlluxioURI to the store

Throws:

InvalidPathException - if the uri exists but is not a key-value store

FileDoesNotExistException - if the uri does not exist

java.io.IOException

AlluxioException

renameStore

public void renameStore(AlluxioURI oldUri,
                        AlluxioURI newUri)
                 throws java.io.IOException,
                        AlluxioException

Description copied from interface: KeyValueMaster

Renames one completed key-value store.

Specified by:

renameStore in interface KeyValueMaster

Parameters:

oldUri - the old AlluxioURI to the store

newUri - the AlluxioURI to the store

Throws:

java.io.IOException

AlluxioException

mergeStore

public void mergeStore(AlluxioURI fromUri,
                       AlluxioURI toUri)
                throws java.io.IOException,
                       FileDoesNotExistException,
                       InvalidPathException,
                       AlluxioException

Description copied from interface: KeyValueMaster

Merges one completed key-value store to another completed key-value store.

Specified by:

mergeStore in interface KeyValueMaster

Parameters:

fromUri - the AlluxioURI to the store to be merged

toUri - the AlluxioURI to the store to be merged to

Throws:

FileDoesNotExistException - if the uri does not exist

InvalidPathException - if the uri exists but is not a key-value store

java.io.IOException

AlluxioException

getPartitionInfo

public java.util.List<PartitionInfo> getPartitionInfo(AlluxioURI path)
                                               throws FileDoesNotExistException,
                                                      AccessControlException,
                                                      InvalidPathException

Description copied from interface: KeyValueMaster

Gets a list of partitions of a given key-value store.

Specified by:

getPartitionInfo in interface KeyValueMaster

Parameters:

path - URI of the key-value store

Returns:

a list of partition information

Throws:

FileDoesNotExistException - if the key-value store URI does not exists

AccessControlException - if permission checking fails

InvalidPathException - if the path is invalid