CleanupTransaction (apache-cassandra API)
Date: 2018-02-14

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

    All Methods Instance Methods Abstract Methods
    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)

Copyright © 2018 The Apache Software Foundation