org.apache.hadoop.hbase.regionserver

Interface ChangedReadersObserver

All Known Implementing Classes:

MobStoreScanner, ReversedMobStoreScanner, ReversedStoreScanner, StoreScanner

@InterfaceAudience.Private
public interface ChangedReadersObserver

If set of MapFile.Readers in Store change, implementors are notified.

Method Summary

Modifier and Type	Method and Description
long	getReadPoint()
void	updateReaders(List<HStoreFile> sfs, List<KeyValueScanner> memStoreScanners) Notify observers.

Method Detail

getReadPoint

long getReadPoint()

Returns:

the read point of the current scan

updateReaders

void updateReaders(List<HStoreFile> sfs,
                   List<KeyValueScanner> memStoreScanners)
            throws IOException

Notify observers.

Parameters:

sfs - The new files

memStoreScanners - scanner of current memstore

Throws:

IOException - e