cz.o2.proxima.direct.blob

Class BlobStorageAccessor

java.lang.Object

cz.o2.proxima.storage.AbstractStorage

cz.o2.proxima.direct.blob.BlobStorageAccessor

All Implemented Interfaces:

DataAccessor, cz.o2.proxima.storage.internal.AbstractDataAccessor, java.io.Serializable

@Internal
public abstract class BlobStorageAccessor
extends cz.o2.proxima.storage.AbstractStorage
implements DataAccessor

A DataAccessor for blob storages.

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	ALLOWED_LATENESS_MS Maximal allowed lateness to wait before segment is rolled.
(package private) java.util.Map<java.lang.String,java.lang.Object>	cfg
(package private) cz.o2.proxima.repository.AttributeFamilyDescriptor	familyDescriptor
static java.lang.String	LOG_ROLL_INTERVAL How often to roll the blob in milliseconds.
static java.lang.String	PARTITION_MAX_BLOBS Maximal number of blobs to be put in single partition.
static java.lang.String	PARTITION_MAX_TIME_SPAN_MS Maximal amount of time (in milliseconds) a partition containing multiple blobs can span.
static java.lang.String	PARTITION_SIZE Minimal size of partition in bytes.
private static long	serialVersionUID

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BlobStorageAccessor(cz.o2.proxima.repository.AttributeFamilyDescriptor family)

Method Summary

Modifier and Type	Method and Description
long	getAllowedLateness()
java.util.Map<java.lang.String,java.lang.Object>	getCfg()
(package private) FileFormat	getFileFormat()
NamingConvention	getNamingConvention()
int	getPartitionMaxNumBlobs()
long	getPartitionMaxTimeSpanMs()
long	getPartitionMinSize()
long	getRollPeriod()
abstract FileSystem	getTargetFileSystem()
java.io.File	getTmpDir()
(package private) void	setCfg(java.lang.String key, java.lang.Object value)

Methods inherited from class cz.o2.proxima.storage.AbstractStorage

equals, getEntityDescriptor, getUri, hashCode

Methods inherited from class java.lang.Object

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

Methods inherited from interface cz.o2.proxima.direct.core.DataAccessor

getBatchLogReader, getCachedView, getCommitLogReader, getRandomAccessReader, getWriter, isAcceptable

Methods inherited from interface cz.o2.proxima.storage.internal.AbstractDataAccessor

getUri

Field Detail

serialVersionUID

private static final long serialVersionUID

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Constant Field Values

LOG_ROLL_INTERVAL

public static final java.lang.String LOG_ROLL_INTERVAL

How often to roll the blob in milliseconds.

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Constant Field Values

ALLOWED_LATENESS_MS

public static final java.lang.String ALLOWED_LATENESS_MS

Maximal allowed lateness to wait before segment is rolled. Late data are put to separate blob and flushed periodically with on time data.

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Constant Field Values

PARTITION_SIZE

public static final java.lang.String PARTITION_SIZE

Minimal size of partition in bytes.

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Constant Field Values

PARTITION_MAX_BLOBS

public static final java.lang.String PARTITION_MAX_BLOBS

Maximal number of blobs to be put in single partition.

See Also:

Constant Field Values

PARTITION_MAX_TIME_SPAN_MS

public static final java.lang.String PARTITION_MAX_TIME_SPAN_MS

Maximal amount of time (in milliseconds) a partition containing multiple blobs can span.

See Also:

Constant Field Values

familyDescriptor

final cz.o2.proxima.repository.AttributeFamilyDescriptor familyDescriptor

cfg

final java.util.Map<java.lang.String,java.lang.Object> cfg

Constructor Detail

BlobStorageAccessor

protected BlobStorageAccessor(cz.o2.proxima.repository.AttributeFamilyDescriptor family)

Method Detail

getCfg

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

setCfg

void setCfg(java.lang.String key,
            java.lang.Object value)

getTargetFileSystem

public abstract FileSystem getTargetFileSystem()

getFileFormat

FileFormat getFileFormat()

getNamingConvention

public NamingConvention getNamingConvention()

getTmpDir

public java.io.File getTmpDir()

getRollPeriod

public long getRollPeriod()

getAllowedLateness

public long getAllowedLateness()

getPartitionMinSize

public long getPartitionMinSize()

getPartitionMaxNumBlobs

public int getPartitionMaxNumBlobs()

getPartitionMaxTimeSpanMs

public long getPartitionMaxTimeSpanMs()