Package org.apache.cassandra.db.compaction

Class ShardManagerDiskAware

java.lang.Object

org.apache.cassandra.db.compaction.ShardManagerNoDisks

org.apache.cassandra.db.compaction.ShardManagerDiskAware

All Implemented Interfaces:

ShardManager

public class ShardManagerDiskAware
extends ShardManagerNoDisks

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
class	ShardManagerDiskAware.BoundaryTrackerDiskAware

Nested classes/interfaces inherited from class org.apache.cassandra.db.compaction.ShardManagerNoDisks

ShardManagerNoDisks.BoundaryTracker

Field Summary

Fields inherited from interface org.apache.cassandra.db.compaction.ShardManager

MINIMUM_TOKEN_COVERAGE

Constructor Summary

Constructors

Constructor	Description
ShardManagerDiskAware(ColumnFamilyStore.VersionedLocalRanges localRanges, List<Token> diskBoundaries)

Method Summary

Modifier and Type	Method	Description
ShardTracker	boundaries(int shardCount)	Construct a boundary/shard iterator for the given number of shards.
double	shardSetCoverage()	The fraction of the token space covered by a shard set, i.e.

Methods inherited from class org.apache.cassandra.db.compaction.ShardManagerNoDisks

isOutOfDate, localSpaceCoverage, rangeSpanned

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.db.compaction.ShardManager

calculateCombinedDensity, compareByDensity, density, rangeSpanned, rangeSpanned

Constructor Details

ShardManagerDiskAware

public ShardManagerDiskAware(ColumnFamilyStore.VersionedLocalRanges localRanges,
 List<Token> diskBoundaries)

Method Details

shardSetCoverage

public double shardSetCoverage()

Description copied from interface: ShardManager

The fraction of the token space covered by a shard set, i.e. the space that is split in the requested number of shards. If no disks are defined, this is the same as localSpaceCoverage(). Otherwise, it is the token coverage of a disk.

Specified by:

shardSetCoverage in interface ShardManager

Overrides:

shardSetCoverage in class ShardManagerNoDisks

boundaries

public ShardTracker boundaries(int shardCount)

Construct a boundary/shard iterator for the given number of shards.

Specified by:

boundaries in interface ShardManager

Overrides:

boundaries in class ShardManagerNoDisks