org.apache.cassandra.index.transactions

Interface CleanupTransaction

All Superinterfaces:

IndexTransaction

public interface CleanupTransaction
extends IndexTransaction

Performs garbage collection of index entries during a cleanup. Notifies registered indexers of each partition being removed and Compaction and Cleanup are somewhat simpler than dealing with incoming writes, being only concerned with cleaning up stale index entries. When multiple versions of a row are compacted, the CleanupTransaction is notified of the versions being merged, which it diffs against the merge result and forwards to the registered Index.Indexer instances when on commit. Instances are currently scoped to a single row within a partition, but this could be improved to batch process multiple rows within a single partition.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.cassandra.index.transactions.IndexTransaction

IndexTransaction.Type

Field Summary

Fields

Modifier and Type	Field and Description
static CleanupTransaction	NO_OP

Method Summary

Modifier and Type	Method and Description
void	onPartitionDeletion(DeletionTime deletionTime)
void	onRowDelete(Row row)

Methods inherited from interface org.apache.cassandra.index.transactions.IndexTransaction

commit, start

Field Detail

NO_OP

static final CleanupTransaction NO_OP

Method Detail

onPartitionDeletion

void onPartitionDeletion(DeletionTime deletionTime)

onRowDelete

void onRowDelete(Row row)