Package nosql.batch.update.wal

Class AbstractWriteAheadLogCompleter<LOCKS,UPDATES,BATCH_ID>

java.lang.Object

nosql.batch.update.wal.AbstractWriteAheadLogCompleter<LOCKS,UPDATES,BATCH_ID>

Direct Known Subclasses:

WriteAheadLogCompleter

public abstract class AbstractWriteAheadLogCompleter<LOCKS,UPDATES,BATCH_ID>
extends Object

Completes hanged transactions

Constructor Summary

Constructors

Constructor	Description
AbstractWriteAheadLogCompleter(Duration staleBatchesThreshold, int batchSize, ExclusiveLocker exclusiveLocker, ScheduledExecutorService scheduledExecutorService)

Method Summary

Modifier and Type	Method	Description
CompletionStatistic	completeHangedTransactions()
protected abstract List<WalRecord<LOCKS,UPDATES,BATCH_ID>>	getStaleBatchesForRange(WalTimeRange timeRange)
protected abstract List<WalTimeRange>	getTimeRanges(Duration staleBatchesThreshold, int batchSize)
boolean	isSuspended()
protected abstract void	processAndDeleteTransactions(WalRecord<LOCKS,UPDATES,BATCH_ID> batch)
protected abstract void	releaseLocksAndDeleteWalTransactionOnError(WalRecord<LOCKS,UPDATES,BATCH_ID> batch)
void	resume()	You should call it when the data center had been switched into the active mode
void	shutdown()
void	start()
void	suspend()	You should call it when the data center had been switched into the passive mode

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractWriteAheadLogCompleter

public AbstractWriteAheadLogCompleter(Duration staleBatchesThreshold,
 int batchSize,
 ExclusiveLocker exclusiveLocker,
 ScheduledExecutorService scheduledExecutorService)

Parameters:

staleBatchesThreshold -

batchSize -

exclusiveLocker -

scheduledExecutorService -

Method Details

start

public void start()

shutdown

public void shutdown()

suspend

public void suspend()

You should call it when the data center had been switched into the passive mode

isSuspended

public boolean isSuspended()

resume

public void resume()

You should call it when the data center had been switched into the active mode

completeHangedTransactions

public CompletionStatistic completeHangedTransactions()

releaseLocksAndDeleteWalTransactionOnError

protected abstract void releaseLocksAndDeleteWalTransactionOnError(WalRecord<LOCKS,UPDATES,BATCH_ID> batch)

processAndDeleteTransactions

protected abstract void processAndDeleteTransactions(WalRecord<LOCKS,UPDATES,BATCH_ID> batch)

getTimeRanges

protected abstract List<WalTimeRange> getTimeRanges(Duration staleBatchesThreshold,
 int batchSize)

getStaleBatchesForRange

protected abstract List<WalRecord<LOCKS,UPDATES,BATCH_ID>> getStaleBatchesForRange(WalTimeRange timeRange)