#include <CellStoreV6.h>

Inheritance diagram for Hypertable::CellStoreV6:

Collaboration diagram for Hypertable::CellStoreV6:

Classes
class	IndexBuilder

Public Member Functions
	CellStoreV6 (Filesystem *filesys)

	CellStoreV6 (Filesystem *filesys, SchemaPtr &schema)

virtual	~CellStoreV6 ()

void	create (const char fname, size_t max_entries, PropertiesPtr &props, const TableIdentifier table_id=0) override
	Creates a new cell store. More...

void	add (const Key &key, const ByteString value) override
	Inserts a key/value pair into the cell list. More...

void	finalize (TableIdentifier *table_identifier) override
	Finalizes the creation of a cell store, by writing block index and metadata trailer. More...

void	open (const String &fname, const String &start_row, const String &end_row, int32_t fd, int64_t file_length, CellStoreTrailer *trailer) override
	Opens a cell store with possibly a restricted view. More...

void	rescope (const String &start_row, const String &end_row) override

int64_t	get_blocksize () override
	Returns the block size used for this cell store. More...

bool	may_contain (ScanContext *scan_ctx) override
	Bloom filter lookup. More...

uint64_t	disk_usage () override
	Returns the disk used by this cell store. More...

float	compression_ratio () override
	Returns block compression ratio of this cell store. More...

void	split_row_estimate_data (SplitRowDataMapT &split_row_data) override
	Populates `split_row_data` with unique row and count estimates from block index. More...

void	populate_index_pseudo_table_scanner (CellListScannerBuffer *scanner) override
	Populates `scanner` with key/value pairs generated from CellStore index. More...

int64_t	get_total_entries () override
	Returns the number of key/value pairs in the cell store. More...

std::string &	get_filename () override
	Pathname of cell store file. More...

int	get_file_id () override
	Returns a unique identifier which identifies the underlying file for caching purposes. More...

CellListScannerPtr	create_scanner (ScanContext *scan_ctx) override
	Creates a scanner on this cell list. More...

BlockCompressionCodec *	create_block_compression_codec () override
	Creates a block compression codec suitable for decompressing the cell store's blocks. More...

KeyDecompressor *	create_key_decompressor () override
	Creates a key decompressor suitable for decompressing the keys stored in this cell store. More...

void	display_block_info () override
	Displays block information to stdout. More...

int64_t	end_of_last_block () override
	Returns the offset of the end of the last block in the cell store. More...

size_t	bloom_filter_size () override
	Return Bloom filter size. More...

int64_t	bloom_filter_memory_used () override
	Returns the amount of memory consumed by the bloom filter. More...

int64_t	block_index_memory_used () override
	Returns the amount of memory consumed by the block index. More...

uint64_t	purge_indexes () override
	Purges bloom filter and block indexes. More...

bool	restricted_range () override
	Returns true if the cellstore was opened with a restricted range. More...

const std::vector< String > &	get_replaced_files () override
	Returns all the cell store files replaced by this CellStore. More...

int32_t	get_fd () override
	Returns the open file descriptor for the CellStore file. More...

int32_t	reopen_fd () override
	Closes and reopens the underlying CellStore file. More...

CellStoreTrailer *	get_trailer () override
	Return a pointer to the trailer object for this cell store. More...

uint16_t	block_header_format () override

Public Member Functions inherited from Hypertable::CellStore
	CellStore ()

virtual	~CellStore ()

virtual size_t	block_count ()
	Returns the number of CellStore blocks covered by this object. More...

virtual void	set_replaced_files (const std::vector< String > &old_files)
	Sets the cell store files replaced by this CellStore. More...

virtual void	get_index_memory_stats (IndexMemoryStats *statsp)
	Returns amount of purgeable index memory available. More...

uint64_t	bytes_read ()
	Returns the number of "uncompressed" bytes read from the underlying filesystem. More...

void	decrement_index_refcount ()
	Decrement index reference count. More...

Public Member Functions inherited from Hypertable::CellList
virtual	~CellList ()

virtual const char *	get_start_row ()
	Returns the start row of this cell list. More...

virtual const char *	get_end_row ()
	Returns the end row of this cell list. More...

Protected Types
typedef BlobHashSet	BloomFilterItems

Protected Member Functions
void	create_bloom_filter (bool is_approx=false)

void	load_bloom_filter ()

void	load_block_index ()

void	load_replaced_files ()

Protected Attributes
Filesystem *	m_filesys

SchemaPtr	m_schema

int32_t	m_fd {-1}

std::string	m_filename

bool	m_64bit_index {}

CellStoreTrailerV6	m_trailer

BlockCompressionCodec *	m_compressor {}

DynamicBuffer	m_buffer

IndexBuilder	m_index_builder

DispatchHandlerSynchronizer	m_sync_handler

uint32_t	m_outstanding_appends {}

int64_t	m_offset {}

int64_t	m_file_length {}

int64_t	m_disk_usage {}

int	m_file_id {}

float	m_uncompressed_data {}

float	m_compressed_data {}

int64_t	m_uncompressed_blocksize {}

BlockCompressionCodec::Args	m_compressor_args

size_t	m_max_entries {}

BloomFilterMode	m_bloom_filter_mode {BLOOM_FILTER_DISABLED}

BloomFilterItems *	m_bloom_filter_items {}

int64_t	m_max_approx_items {}

float	m_bloom_bits_per_item {}

float	m_filter_false_positive_prob {}

KeyCompressorPtr	m_key_compressor {}

bool	m_restricted_range {}

int64_t *	m_column_ttl {}

bool	m_replaced_files_loaded {}

BloomFilterWithChecksum *	m_bloom_filter {}
	Bloom filter. More...

CellStoreBlockIndexArray < uint32_t >	m_index_map32
	32-bit block index More...

CellStoreBlockIndexArray< int64_t >	m_index_map64
	64-bit block index More...

Protected Attributes inherited from Hypertable::CellStore
std::mutex	m_mutex

IndexMemoryStats	m_index_stats

std::vector< String >	m_replaced_files

uint64_t	m_bytes_read

size_t	m_block_count

uint32_t	m_index_refcount

Protected Attributes inherited from Hypertable::CellList
std::string	m_start_row

std::string	m_end_row

Additional Inherited Members
Public Types inherited from Hypertable::CellList
typedef std::pair< const char *, int64_t >	SplitRowDataValue

typedef StlAllocator < SplitRowDataValue >	SplitRowDataAlloc

typedef std::map< const char *, int64_t, LtCstr, SplitRowDataAlloc >	SplitRowDataMapT

Static Public Attributes inherited from Hypertable::CellStore
static const char	DATA_BLOCK_MAGIC [10]

static const char	INDEX_FIXED_BLOCK_MAGIC [10]

static const char	INDEX_VARIABLE_BLOCK_MAGIC [10]

Detailed Description

Definition at line 65 of file CellStoreV6.h.

Member Typedef Documentation

typedef BlobHashSet Hypertable::CellStoreV6::BloomFilterItems

protected

Definition at line 164 of file CellStoreV6.h.

Constructor & Destructor Documentation

CellStoreV6::CellStoreV6 ( Filesystem * filesys )

Definition at line 69 of file CellStoreV6.cc.

CellStoreV6::CellStoreV6	(	Filesystem *	filesys,
		SchemaPtr &	schema
	)

Definition at line 75 of file CellStoreV6.cc.

CellStoreV6::~CellStoreV6 ( )

virtual

Definition at line 81 of file CellStoreV6.cc.

Member Function Documentation

void CellStoreV6::add	(	const Key &	key,
		const ByteString	value
	)

overridevirtual

Inserts a key/value pair into the cell list.

Parameters

key	key object
value	ByteString representing value

Implements Hypertable::CellStore.

Definition at line 446 of file CellStoreV6.cc.

uint16_t CellStoreV6::block_header_format ( )

overridevirtual

Implements Hypertable::CellStore.

Definition at line 1096 of file CellStoreV6.cc.

int64_t Hypertable::CellStoreV6::block_index_memory_used ( )

inlineoverridevirtual

Returns the amount of memory consumed by the block index.

Returns: memory used by block index

Implements Hypertable::CellStore.

Definition at line 132 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::bloom_filter_memory_used ( )

inlineoverridevirtual

Returns the amount of memory consumed by the bloom filter.

Returns: memory used by bloom filter

Implements Hypertable::CellStore.

Definition at line 127 of file CellStoreV6.h.

size_t Hypertable::CellStoreV6::bloom_filter_size ( )

inlineoverridevirtual

Return Bloom filter size.

Returns: size of bloom filter

Implements Hypertable::CellStore.

Definition at line 122 of file CellStoreV6.h.

float Hypertable::CellStoreV6::compression_ratio ( )

inlineoverridevirtual

Returns block compression ratio of this cell store.

Returns: compression ratio

Implements Hypertable::CellStore.

Definition at line 99 of file CellStoreV6.h.

void CellStoreV6::create	(	const char *	fname,
		size_t	max_entries,
		PropertiesPtr &	props,
		const TableIdentifier *	table_id = `0`
	)

overridevirtual

Creates a new cell store.

Parameters

fname	name of file to contain the cell store
max_entries	maximum number of entries the cell store is expected to have
props	cellstore specific properties
table_id	Table identifier

Implements Hypertable::CellStore.

Definition at line 179 of file CellStoreV6.cc.

BlockCompressionCodec * CellStoreV6::create_block_compression_codec ( )

overridevirtual

Creates a block compression codec suitable for decompressing the cell store's blocks.

Returns: pointer to compression codec

Implements Hypertable::CellStore.

Definition at line 99 of file CellStoreV6.cc.

void CellStoreV6::create_bloom_filter ( bool is_approx = false )

protected

Definition at line 274 of file CellStoreV6.cc.

KeyDecompressor * CellStoreV6::create_key_decompressor ( )

overridevirtual

Creates a key decompressor suitable for decompressing the keys stored in this cell store.

Returns: pointer to key decompressor

Reimplemented from Hypertable::CellStore.

Definition at line 104 of file CellStoreV6.cc.

CellListScannerPtr CellStoreV6::create_scanner ( ScanContext * scan_ctx )

overridevirtual

Creates a scanner on this cell list.

Parameters

scan_ctx smart pointer to scan context

Returns: pointer to newly allocated scanner

Reimplemented from Hypertable::CellStore.

Definition at line 143 of file CellStoreV6.cc.

uint64_t Hypertable::CellStoreV6::disk_usage ( )

inlineoverridevirtual

Returns the disk used by this cell store.

If the cell store is opened with a restricted range, then it returns an estimate of the disk used by that range.

Returns: disk used by this cell store or portion thereof

Implements Hypertable::CellStore.

Definition at line 98 of file CellStoreV6.h.

void CellStoreV6::display_block_info ( )

overridevirtual

Displays block information to stdout.

Implements Hypertable::CellStore.

Definition at line 1085 of file CellStoreV6.cc.

int64_t Hypertable::CellStoreV6::end_of_last_block ( )

inlineoverridevirtual

Returns the offset of the end of the last block in the cell store.

Returns: offset of end of last block

Implements Hypertable::CellStore.

Definition at line 120 of file CellStoreV6.h.

void CellStoreV6::finalize ( TableIdentifier * table_identifier )

overridevirtual

Finalizes the creation of a cell store, by writing block index and metadata trailer.

Parameters

table_identifier table identifier

Chop the Index buffers down to the exact length

Write fixed index

Write variable index

Set up index

close file for writing

Set file length

Re-open file for reading

Implements Hypertable::CellStore.

Definition at line 557 of file CellStoreV6.cc.

int64_t Hypertable::CellStoreV6::get_blocksize ( )

inlineoverridevirtual

Returns the block size used for this cell store.

The block size is the amount of uncompressed key/value pairs to collect before compressing and storing as a compressed block in the cell store.

Returns: block size

Implements Hypertable::CellStore.

Definition at line 96 of file CellStoreV6.h.

int32_t Hypertable::CellStoreV6::get_fd ( )

inlineoverridevirtual

Returns the open file descriptor for the CellStore file.

Returns: open file descriptor

Implements Hypertable::CellStore.

Definition at line 141 of file CellStoreV6.h.

int Hypertable::CellStoreV6::get_file_id ( )

inlineoverridevirtual

Returns a unique identifier which identifies the underlying file for caching purposes.

Returns: unique file id

Implements Hypertable::CellStore.

Definition at line 115 of file CellStoreV6.h.

std::string& Hypertable::CellStoreV6::get_filename ( )

inlineoverridevirtual

Pathname of cell store file.

Returns: string reference to the cell store path name

Implements Hypertable::CellStore.

Definition at line 114 of file CellStoreV6.h.

const std::vector< String > & CellStoreV6::get_replaced_files ( )

overridevirtual

Returns all the cell store files replaced by this CellStore.

Returns: vector of strings with names of the files that this cell store replaces

Reimplemented from Hypertable::CellStore.

Definition at line 305 of file CellStoreV6.cc.

int64_t Hypertable::CellStoreV6::get_total_entries ( )

inlineoverridevirtual

Returns the number of key/value pairs in the cell store.

Returns: Number of key/value pairs in list

Implements Hypertable::CellStore.

Definition at line 113 of file CellStoreV6.h.

CellStoreTrailer* Hypertable::CellStoreV6::get_trailer ( )

inlineoverridevirtual

Return a pointer to the trailer object for this cell store.

Returns: pointer to the internal trailer of this cell store

Implements Hypertable::CellStore.

Definition at line 154 of file CellStoreV6.h.

void CellStoreV6::load_block_index ( )

protected

Read index data

inflate fixed index

inflate variable index

Set up index

Definition at line 932 of file CellStoreV6.cc.

void CellStoreV6::load_bloom_filter ( )

protected

Definition at line 359 of file CellStoreV6.cc.

void CellStoreV6::load_replaced_files ( )

protected

Read index data

inflate replaced files

Definition at line 312 of file CellStoreV6.cc.

bool CellStoreV6::may_contain ( ScanContext * scan_ctx )

overridevirtual

Bloom filter lookup.

Parameters

scan_ctx Scan context

Returns: true if cell store may contain row referenced by scan_ctx

Implements Hypertable::CellStore.

Definition at line 1030 of file CellStoreV6.cc.

void CellStoreV6::open	(	const String &	fname,
		const String &	start_row,
		const String &	end_row,
		int32_t	fd,
		int64_t	file_length,
		CellStoreTrailer *	trailer
	)

overridevirtual

Opens a cell store with possibly a restricted view.

When a range splits, the cell stores that comprise the range get shared between the two newly created ranges. This method allows each of the two ranges to open the same cell store but view different portions of it.

Parameters

fname	pathname of file containing cell store
start_row	restricts view of this store to key/value pairs that are greater than this value
end_row	restricts view of this store to key/value pairs that are less than or equal to this value
fd	cell store file descriptor
file_length	length of cell store file
trailer	pointer to trailer object

Sanity check trailer

Implements Hypertable::CellStore.

Definition at line 862 of file CellStoreV6.cc.

void CellStoreV6::populate_index_pseudo_table_scanner ( CellListScannerBuffer * scanner )

overridevirtual

Populates scanner with key/value pairs generated from CellStore index.

This method will first load the CellStore block index into memory, if it is not already loaded, and then it will call the CellStoreBlockIndexArray::populate_pseudo_table_scanner method to populate scanner with synthesized .cellstore.index pseudo-table cells.

Parameters

scanner Pointer to CellListScannerBuffer to receive key/value pairs

Reimplemented from Hypertable::CellStore.

Definition at line 123 of file CellStoreV6.cc.

uint64_t CellStoreV6::purge_indexes ( )

overridevirtual

Purges bloom filter and block indexes.

Returns: amount of memory purged

Implements Hypertable::CellStore.

Definition at line 416 of file CellStoreV6.cc.

int32_t Hypertable::CellStoreV6::reopen_fd ( )

inlineoverridevirtual

Closes and reopens the underlying CellStore file.

Returns: new file descriptor

Implements Hypertable::CellStore.

Definition at line 146 of file CellStoreV6.h.

void CellStoreV6::rescope	(	const String &	start_row,
		const String &	end_row
	)

overridevirtual

Reimplemented from Hypertable::CellStore.

Definition at line 900 of file CellStoreV6.cc.

bool Hypertable::CellStoreV6::restricted_range ( )

inlineoverridevirtual

Returns true if the cellstore was opened with a restricted range.

Returns: true if cellstore opened with restricted range

Implements Hypertable::CellStore.

Definition at line 138 of file CellStoreV6.h.

void CellStoreV6::split_row_estimate_data ( SplitRowDataMapT & split_row_data )

overridevirtual

Populates split_row_data with unique row and count estimates from block index.

Parameters

split_row_data Reference to accumulator map holding unique rows and counts taken from block index.

Note: split_row_data should not be cleared

Reimplemented from Hypertable::CellStore.

Definition at line 108 of file CellStoreV6.cc.

Member Data Documentation

bool Hypertable::CellStoreV6::m_64bit_index {}

protected

Definition at line 170 of file CellStoreV6.h.

float Hypertable::CellStoreV6::m_bloom_bits_per_item {}

protected

Definition at line 189 of file CellStoreV6.h.

BloomFilterWithChecksum* Hypertable::CellStoreV6::m_bloom_filter {}

protected

Bloom filter.

Definition at line 199 of file CellStoreV6.h.

BloomFilterItems* Hypertable::CellStoreV6::m_bloom_filter_items {}

protected

Definition at line 187 of file CellStoreV6.h.

BloomFilterMode Hypertable::CellStoreV6::m_bloom_filter_mode {BLOOM_FILTER_DISABLED}

protected

Definition at line 186 of file CellStoreV6.h.

DynamicBuffer Hypertable::CellStoreV6::m_buffer

protected

Definition at line 173 of file CellStoreV6.h.

int64_t* Hypertable::CellStoreV6::m_column_ttl {}

protected

Definition at line 193 of file CellStoreV6.h.

float Hypertable::CellStoreV6::m_compressed_data {}

protected

Definition at line 182 of file CellStoreV6.h.

BlockCompressionCodec* Hypertable::CellStoreV6::m_compressor {}

protected

Definition at line 172 of file CellStoreV6.h.

BlockCompressionCodec::Args Hypertable::CellStoreV6::m_compressor_args

protected

Definition at line 184 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::m_disk_usage {}

protected

Definition at line 179 of file CellStoreV6.h.

int32_t Hypertable::CellStoreV6::m_fd {-1}

protected

Definition at line 168 of file CellStoreV6.h.

int Hypertable::CellStoreV6::m_file_id {}

protected

Definition at line 180 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::m_file_length {}

protected

Definition at line 178 of file CellStoreV6.h.

std::string Hypertable::CellStoreV6::m_filename

protected

Definition at line 169 of file CellStoreV6.h.

Filesystem* Hypertable::CellStoreV6::m_filesys

protected

Definition at line 166 of file CellStoreV6.h.

float Hypertable::CellStoreV6::m_filter_false_positive_prob {}

protected

Definition at line 190 of file CellStoreV6.h.

IndexBuilder Hypertable::CellStoreV6::m_index_builder

protected

Definition at line 174 of file CellStoreV6.h.

CellStoreBlockIndexArray<uint32_t> Hypertable::CellStoreV6::m_index_map32

protected

32-bit block index

Definition at line 202 of file CellStoreV6.h.

CellStoreBlockIndexArray<int64_t> Hypertable::CellStoreV6::m_index_map64

protected

64-bit block index

Definition at line 205 of file CellStoreV6.h.

KeyCompressorPtr Hypertable::CellStoreV6::m_key_compressor {}

protected

Definition at line 191 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::m_max_approx_items {}

protected

Definition at line 188 of file CellStoreV6.h.

size_t Hypertable::CellStoreV6::m_max_entries {}

protected

Definition at line 185 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::m_offset {}

protected

Definition at line 177 of file CellStoreV6.h.

uint32_t Hypertable::CellStoreV6::m_outstanding_appends {}

protected

Definition at line 176 of file CellStoreV6.h.

bool Hypertable::CellStoreV6::m_replaced_files_loaded {}

protected

Definition at line 194 of file CellStoreV6.h.

bool Hypertable::CellStoreV6::m_restricted_range {}

protected

Definition at line 192 of file CellStoreV6.h.

SchemaPtr Hypertable::CellStoreV6::m_schema

protected

Definition at line 167 of file CellStoreV6.h.

DispatchHandlerSynchronizer Hypertable::CellStoreV6::m_sync_handler

protected

Definition at line 175 of file CellStoreV6.h.

CellStoreTrailerV6 Hypertable::CellStoreV6::m_trailer

protected

Definition at line 171 of file CellStoreV6.h.

int64_t Hypertable::CellStoreV6::m_uncompressed_blocksize {}

protected

Definition at line 183 of file CellStoreV6.h.

float Hypertable::CellStoreV6::m_uncompressed_data {}

protected

Definition at line 181 of file CellStoreV6.h.

The documentation for this class was generated from the following files:

/home/doug/src/hypertable/src/cc/Hypertable/RangeServer/CellStoreV6.h
/home/doug/src/hypertable/src/cc/Hypertable/RangeServer/CellStoreV6.cc

Classes

Public Member Functions

Protected Types

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation