org.apache.cassandra.db.commitlog

Interface CommitLogMBean

All Known Implementing Classes:

CommitLog

public interface CommitLogMBean

Method Summary

Modifier and Type	Method and Description
long	getActiveContentSize()
long	getActiveOnDiskSize()
java.util.Map<java.lang.String,java.lang.Double>	getActiveSegmentCompressionRatios()
java.util.List<java.lang.String>	getActiveSegmentNames()
java.lang.String	getArchiveCommand() Command to execute to archive a commitlog segment.
java.util.List<java.lang.String>	getArchivingSegmentNames()
java.lang.String	getRestoreCommand() Command to execute to make an archived commitlog live again
java.lang.String	getRestoreDirectories() Directory to scan the recovery files in
long	getRestorePointInTime() Restore mutations created up to and including this timestamp in GMT Format: yyyy:MM:dd HH:mm:ss (2012:04:31 20:43:12) Recovery will continue through the segment when the first client-supplied timestamp greater than this time is encountered, but only mutations less than or equal to this timestamp will be applied.
java.lang.String	getRestorePrecision() get precision of the timestamp used in the restore (MILLISECONDS, MICROSECONDS, ...) to determine if passed the restore point in time.
void	recover(java.lang.String path) Recover a single file.

Method Detail

getArchiveCommand

java.lang.String getArchiveCommand()

Command to execute to archive a commitlog segment. Blank to disabled.

getRestoreCommand

java.lang.String getRestoreCommand()

Command to execute to make an archived commitlog live again

getRestoreDirectories

java.lang.String getRestoreDirectories()

Directory to scan the recovery files in

getRestorePointInTime

long getRestorePointInTime()

Restore mutations created up to and including this timestamp in GMT Format: yyyy:MM:dd HH:mm:ss (2012:04:31 20:43:12) Recovery will continue through the segment when the first client-supplied timestamp greater than this time is encountered, but only mutations less than or equal to this timestamp will be applied.

getRestorePrecision

java.lang.String getRestorePrecision()

get precision of the timestamp used in the restore (MILLISECONDS, MICROSECONDS, ...) to determine if passed the restore point in time.

recover

void recover(java.lang.String path)
      throws java.io.IOException

Recover a single file.

Throws:

java.io.IOException

getActiveSegmentNames

java.util.List<java.lang.String> getActiveSegmentNames()

Returns:

file names (not full paths) of active commit log segments (segments containing unflushed data)

getArchivingSegmentNames

java.util.List<java.lang.String> getArchivingSegmentNames()

Returns:

Files which are pending for archival attempt. Does NOT include failed archive attempts.

getActiveContentSize

long getActiveContentSize()

Returns:

The size of the mutations in all active commit log segments (uncompressed).

getActiveOnDiskSize

long getActiveOnDiskSize()

Returns:

The space taken on disk by the commit log (compressed).

getActiveSegmentCompressionRatios

java.util.Map<java.lang.String,java.lang.Double> getActiveSegmentCompressionRatios()

Returns:

A map between active log segments and the compression ratio achieved for each.