org.apache.cassandra.index.transactions

Interface CompactionTransaction

All Superinterfaces:

IndexTransaction

public interface CompactionTransaction
extends IndexTransaction

Performs garbage collection of stale index entries during a regular compaction. A CompactionTransaction is concerned with cleaning up stale index entries. When multiple versions of a row are compacted, the CompactionTransaction is notified of the versions being merged, which it diffs against the merge result. 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 CompactionTransaction	NO_OP

Method Summary

Modifier and Type	Method and Description
void	onRowMerge(Row merged, Row... versions)

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

commit, start

Field Detail

NO_OP

static final CompactionTransaction NO_OP

Method Detail

onRowMerge

void onRowMerge(Row merged,
                Row... versions)