alluxio.master.keyvalue

Interface KeyValueMaster

All Superinterfaces:

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

All Known Implementing Classes:

DefaultKeyValueMaster

public interface KeyValueMaster
extends Master

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

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.List<PartitionInfo>	getPartitionInfo(AlluxioURI path) Gets a list of partitions of a given key-value store.
void	mergeStore(AlluxioURI fromUri, AlluxioURI toUri) Merges one completed key-value store to another completed key-value store.
void	renameStore(AlluxioURI oldUri, AlluxioURI newUri) Renames one completed key-value store.

Methods inherited from interface alluxio.master.journal.JournalEntryStateMachine

getName, processJournalEntry, resetState

Methods inherited from interface alluxio.master.journal.JournalEntryIterable

getJournalEntryIterator

Methods inherited from interface alluxio.Server

getDependencies, getName, getServices, start, stop

Method Detail

completePartition

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

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

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

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

Marks a key-value store complete.

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

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

Creates a new key-value store.

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

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

Deletes a completed key-value store.

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

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

Renames one completed key-value store.

Parameters:

oldUri - the old AlluxioURI to the store

newUri - the AlluxioURI to the store

Throws:

java.io.IOException

AlluxioException

mergeStore

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

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

Parameters:

fromUri - the AlluxioURI to the store to be merged

toUri - the AlluxioURI to the store to be merged to

Throws:

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

FileDoesNotExistException - if the uri does not exist

java.io.IOException

AlluxioException

getPartitionInfo

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

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

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