ShardManagerDiskAware (apache-cassandra API)

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, java.util.List<Token> diskBoundaries)

Method Summary

All Methods Instance Methods Concrete Methods
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 Detail
  - ShardManagerDiskAware
```
public ShardManagerDiskAware(ColumnFamilyStore.VersionedLocalRanges localRanges,
                             java.util.List<Token> diskBoundaries)
```
- Method Detail
  - 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