/*
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Feb 3, 2009
*/
package com.bigdata.service;
import com.bigdata.btree.IndexSegment;
import com.bigdata.journal.Journal;
import com.bigdata.resources.OverflowActionEnum;
import com.bigdata.resources.OverflowManager;
/**
* Type safe enum for {@link Event}s.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public enum EventType {
/**
* Synchronous overflow is a fast operation that occurs when the live
* journal is nearly at its maximum capacity. The index partition views are
* redefined onto a new journal during synchronous overflow, but little or
* no data is copied off of the old journal.
*/
SynchronousOverflow,
/**
* Asynchronous overflow migrates data off of the old journal and onto
* read-optimized index segments and is responsible for running operation
* which split, join, or move index partitions.
*/
AsynchronousOverflow,
/*
* Other kinds of events.
*/
/**
* Operation that builds an index segment. Builds may either be simple (from
* the {@link BTree} on a {@link Journal} used to absorb writes for an index
* partition) or compacting merges (from the full view of the index
* partition).
*/
IndexSegmentBuild,
/**
* An {@link IndexSegmentStore} open-close event (start is open, end is close).
*/
IndexSegmentStoreOpenClose,
/**
* An {@link IndexSegment} open-close event (start is open, end is close).
*/
IndexSegmentOpenClose,
/**
* Purge resources.
*
* @see OverflowManager#purgeOldResources(long, boolean)
*/
PurgeResources
;
}