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## org.codehaus.activemq.journal
Interface JournalEventListener

All Known Implementing Classes:
  JournalPersistenceAdapter

public interface JournalEventListener

Defines an object which listens for Journal Events.

Version:
  $Revision: 1.1 $

Method Summary
`void` | `overflowNotification(RecordLocation safeLocation)` This event is issues when a Journal implementations wants to recover disk space used by old records.

Method Detail

### overflowNotification

    public void overflowNotification(RecordLocation safeLocation)

  This event is issues when a Journal implementations wants to recover disk space used by old records. If journal space is not reliquised by setting the Journal's mark at or past the `safeLocation` further write opperations against the Journal may casuse IOExceptions to occur due to a log overflow condition.

  Parameters:
    `safeLocation` - the oldest location that the journal recomends the mark to be set.

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