Package org.apache.druid.timeline

Annotation Type PruneLastCompactionState

@Target({PARAMETER,FIELD})
@Retention(RUNTIME)
public @interface PruneLastCompactionState

This annnotation is used to inject a boolean parameter into a DataSegment constructor, which prescribes to drop deserialized "lastCompactionState" and don't store it in a field of a DataSegment. "lastCompactionState" is used only on the coordinator, peons, and indexers. - In auto compaction of the coordinator, "lastCompactionState" is used to determine whether the given segment needs further compaction or not. - In Metadata store information API of the coordinator, "lastCompactionState" is part of the sys.segments table - In parallel indexing, "lastCompactionState" should be serialized and deserialized properly when the sub tasks report the pushed segments to the supervisor task.