Hypertable::MaintenancePrioritizerLowMemory Class Reference

#include <MaintenancePrioritizerLowMemory.h>

Inheritance diagram for Hypertable::MaintenancePrioritizerLowMemory:

Collaboration diagram for Hypertable::MaintenancePrioritizerLowMemory:

Public Member Functions
virtual void	prioritize (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t priority, String *trace)
Public Member Functions inherited from Hypertable::MaintenancePrioritizer
	MaintenancePrioritizer ()

Private Member Functions
void	assign_priorities_all (std::vector< RangeData > &range_data, CommitLogPtr &log, int64_t prune_threshold, MemoryState &memory_state, int32_t &priority, String *trace)
	Memory freeing algorithm: More...
void	assign_priorities_user (std::vector< RangeData > &range_data, LoadStatistics::Bundle &load_stats, MemoryState &memory_state, int32_t &priority, String *trace)
	Memory freeing algorithm: More...

Additional Inherited Members
Protected Member Functions inherited from Hypertable::MaintenancePrioritizer
void	schedule_initialization_operations (std::vector< RangeData > &range_data, int32_t &priority)
bool	schedule_inprogress_operations (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t &priority, String *trace)
bool	schedule_splits_and_relinquishes (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t &priority, String *trace)
bool	schedule_necessary_compactions (std::vector< RangeData > &range_data, CommitLogPtr &log, int64_t prune_threshold, MemoryState &memory_state, int32_t &priority, String *trace)
bool	purge_shadow_caches (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t &priority, String *trace)
bool	purge_cellstore_indexes (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t &priority, String *trace)
bool	compact_cellcaches (std::vector< RangeData > &range_data, MemoryState &memory_state, int32_t &priority, String *trace)
Protected Attributes inherited from Hypertable::MaintenancePrioritizer
bool	m_initialization_complete
bool	m_uninitialized_ranges_seen

Detailed Description

Definition at line 29 of file MaintenancePrioritizerLowMemory.h.

Member Function Documentation

void MaintenancePrioritizerLowMemory::assign_priorities_all ( std::vector< RangeData > &  range_data, CommitLogPtr &  log, int64_t  prune_threshold, MemoryState &  memory_state, int32_t &  priority, String *  trace  )

private

Memory freeing algorithm:

1. schedule in-progress relinquish and/or split operations
2. schedule needed splits
3. schedule needed compactions

Definition at line 133 of file MaintenancePrioritizerLowMemory.cc.

void MaintenancePrioritizerLowMemory::assign_priorities_user ( std::vector< RangeData > &  range_data, LoadStatistics::Bundle &  load_stats, MemoryState &  memory_state, int32_t &  priority, String *  trace  )

private

Memory freeing algorithm:

1. purge shadow caches

if (READ heavy)

1. compact remaining cell caches
2. shrink block cache
3. purge cell store indexes else if (WRITE heavy)

1. shrink block cache
2. purge cell store indexes
3. compact remaining cell caches else

1. shrink block cache
2. compact remaining cell caches
3. purge cell store indexes

Definition at line 170 of file MaintenancePrioritizerLowMemory.cc.

void MaintenancePrioritizerLowMemory::prioritize ( std::vector< RangeData > &  range_data, MemoryState &  memory_state, int32_t  priority, String *  trace  )

virtual

Assign priority for ROOT range

Assign priority for METADATA ranges

Compute prune threshold based on load activity

Assign priority for SYSTEM ranges

Assign priority for USER ranges

Implements Hypertable::MaintenancePrioritizer.

Definition at line 37 of file MaintenancePrioritizerLowMemory.cc.

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

• /home/doug/src/hypertable/src/cc/Hypertable/RangeServer/MaintenancePrioritizerLowMemory.h
• /home/doug/src/hypertable/src/cc/Hypertable/RangeServer/MaintenancePrioritizerLowMemory.cc