CommitLogSegmentManagerStandard (apache-cassandra API)

java.lang.Object
- org.apache.cassandra.db.commitlog.AbstractCommitLogSegmentManager
- - org.apache.cassandra.db.commitlog.CommitLogSegmentManagerStandard

public class CommitLogSegmentManagerStandard
extends AbstractCommitLogSegmentManager

Constructor Summary

Constructors
Constructor Description

CommitLogSegmentManagerStandard(CommitLog commitLog, java.lang.String storageDirectory)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`CommitLogSegment.Allocation`	`allocate(Mutation mutation, int size)`	Reserve space in the current segment for the provided mutation or, if there isn't space available, create a new segment.
`CommitLogSegment`	`createSegment()`	Hook to allow segment managers to track state surrounding creation of new segments.
`void`	`discard(CommitLogSegment segment, boolean delete)`

Methods inherited from class org.apache.cassandra.db.commitlog.AbstractCommitLogSegmentManager
awaitManagementTasksCompletion, awaitTermination, getActiveSegments, onDiskSize, shutdown, stopUnsafe, sync

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CommitLogSegmentManagerStandard
```
public CommitLogSegmentManagerStandard(CommitLog commitLog,
                                       java.lang.String storageDirectory)
```
- Method Detail
  - discard
```
public void discard(CommitLogSegment segment,
                    boolean delete)
```
  - allocate
```
public CommitLogSegment.Allocation allocate(Mutation mutation,
                                            int size)
```
    Reserve space in the current segment for the provided mutation or, if there isn't space available, create a new segment. allocate() is blocking until allocation succeeds as it waits on a signal in advanceAllocatingFrom
    
    Specified by:
    
    allocate in class AbstractCommitLogSegmentManager
    
    Parameters:
    
    mutation - mutation to allocate space for
    
    size - total size of mutation (overhead + serialized size)
    
    Returns:
    
    the provided Allocation object
  - createSegment
```
public CommitLogSegment createSegment()
```
    Description copied from class: AbstractCommitLogSegmentManager
    
    Hook to allow segment managers to track state surrounding creation of new segments. Onl perform as task submit to segment manager so it's performed on segment management thread.
    
    Overrides:
    
    createSegment in class AbstractCommitLogSegmentManager