com.sleepycat.je.cleaner

Class RecoveryUtilizationTracker

java.lang.Object

com.sleepycat.je.cleaner.BaseUtilizationTracker

com.sleepycat.je.cleaner.RecoveryUtilizationTracker

public class RecoveryUtilizationTracker
extends BaseUtilizationTracker

Accumulates changes to the utilization profile during recovery.

Per-database information is keyed by DatabaseId because the DatabaseImpl is not always available during recovery. In fact this is the only reason that a "local" tracker is used during recovery -- to avoid requiring that the DatabaseImpl is available, which is necessary to use the "global" UtilizationTracker. There is no requirement to accumulate totals locally, since recovery is single threaded.

When finished with this object, its information should be added to the Environment's UtilizationTracker and DatabaseImpl objects by calling transferToUtilizationTracker. This is done at the end of recovery, just prior to the checkpoint. It does not have to be done under the log write latch, since recovery is single threaded.

Constructor Summary

Constructors

Constructor and Description
RecoveryUtilizationTracker(EnvironmentImpl env)

Method Summary

Modifier and Type	Method and Description
void	countNewLogEntry(long lsn, LogEntryType type, int size) Counts the addition of all new log entries including LNs.
void	countObsoleteIfUncounted(long oldLsn, long newLsn, LogEntryType type, int size, boolean trackOffset) Counts the oldLsn of a node obsolete if it has not already been counted at the point of lsn in the log.
void	countObsoleteUnconditional(long lsn, LogEntryType type, int size, boolean trackOffset) Counts the LSN of a node obsolete unconditionally.
void	resetFileInfo(long fileNum) Clears all accmulated utilization info for the given file.
void	saveLastLoggedFileSummaryLN(long fileNum, long lsn) Saves the LSN of the last logged FileSummaryLN.

Methods inherited from class com.sleepycat.je.cleaner.BaseUtilizationTracker

countObsoleteDb, getEnvironment, getTrackedFile, getTrackedFiles, isLNType, trackObsoleteInfo, transferToUtilizationTracker

Methods inherited from class java.lang.Object

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

Constructor Detail

RecoveryUtilizationTracker

public RecoveryUtilizationTracker(EnvironmentImpl env)

Method Detail

saveLastLoggedFileSummaryLN

public void saveLastLoggedFileSummaryLN(long fileNum,
                                        long lsn)

Saves the LSN of the last logged FileSummaryLN.

countNewLogEntry

public void countNewLogEntry(long lsn,
                             LogEntryType type,
                             int size)

Counts the addition of all new log entries including LNs.

countObsoleteUnconditional

public void countObsoleteUnconditional(long lsn,
                                       LogEntryType type,
                                       int size,
                                       boolean trackOffset)

Counts the LSN of a node obsolete unconditionally. Even when trackOffset is true, duplicate offsets are not checked (no assertion is fired) because recovery is known to count the same LSN offset twice in certain circumstances.

countObsoleteIfUncounted

public void countObsoleteIfUncounted(long oldLsn,
                                     long newLsn,
                                     LogEntryType type,
                                     int size,
                                     boolean trackOffset)

Counts the oldLsn of a node obsolete if it has not already been counted at the point of lsn in the log. Even when trackOffset is true, duplicate offsets are not checked (no assertion is fired) because recovery is known to count the same LSN offset twice in certain circumstances.

resetFileInfo

public void resetFileInfo(long fileNum)

Clears all accmulated utilization info for the given file.