org.apache.hadoop.hbase.quotas

Interface FileArchiverNotifier

All Known Implementing Classes:

FileArchiverNotifierImpl

@InterfaceAudience.Private
public interface FileArchiverNotifier

Interface allowing various implementations of tracking files that have recently been archived to allow for the Master to notice changes to snapshot sizes for space quotas. This object needs to ensure that addArchivedFiles(Set) and computeAndStoreSnapshotSizes(Collection) are mutually exclusive. If a "full" computation is in progress, new changes being archived should be held.

Method Summary

Modifier and Type	Method and Description
void	addArchivedFiles(Set<Map.Entry<String,Long>> fileSizes) Records a file and its size in bytes being moved to the archive directory.
long	computeAndStoreSnapshotSizes(Collection<String> currentSnapshots) Computes the size of a table and all of its snapshots, recording new "full" sizes for each.

Method Detail

addArchivedFiles

void addArchivedFiles(Set<Map.Entry<String,Long>> fileSizes)
               throws IOException

Records a file and its size in bytes being moved to the archive directory.

Parameters:

fileSizes - A collection of file name to size in bytes

Throws:

IOException - If there was an IO-related error persisting the file size(s)

computeAndStoreSnapshotSizes

long computeAndStoreSnapshotSizes(Collection<String> currentSnapshots)
                           throws IOException

Computes the size of a table and all of its snapshots, recording new "full" sizes for each.

Parameters:

currentSnapshots - the current list of snapshots against this table

Returns:

The total size of all snapshots against this table.

Throws:

IOException - If there was an IO-related error computing or persisting the sizes.