# Package org.apache.solr.hadoop.dedup

Dedupe related code.

See: Description

- Interface Summary
  Interface | Description
  --- | ---
  UpdateConflictResolver | Interface that enables deduplication and ordering of a series of document updates for the same unique document key.

- Class Summary
  Class | Description
  --- | ---
  NoChangeUpdateConflictResolver | UpdateConflictResolver implementation that returns the solr documents in the same order as they are received on input, i.e.
  RejectingUpdateConflictResolver | UpdateConflictResolver implementation that rejects multiple documents with the same key with an exception.
  RetainMostRecentUpdateConflictResolver | UpdateConflictResolver implementation that ignores all but the most recent document version, based on a configurable numeric Solr field, which defaults to the file_last_modified timestamp.
  SolrInputDocumentComparator | Default mechanism of determining which of two Solr documents with the same key is the more recent version.
  SolrInputDocumentComparator.TimeStampComparator |
  SortingUpdateConflictResolver | UpdateConflictResolver implementation that orders colliding updates ascending from least recent to most recent (partial) update, based on a configurable numeric Solr field, which defaults to the file_last_modified timestamp.

## Package org.apache.solr.hadoop.dedup Description

Dedupe related code.

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