/**
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 10, 2012
*/
package com.bigdata.journal;
import java.io.File;
import java.util.Properties;
import com.bigdata.btree.IIndex;
import com.bigdata.btree.IndexMetadata;
import com.bigdata.rwstore.RWStore;
/**
* Given an existing journal, ensure that any commitRecords that reference a
* time prior to the last deferred release time are removed. This provides a
* "fix" for opening a bigdata 1.0.4 journal in bigdata 1.0.6.
*
* @see <a href="https://sourceforge.net/apps/trac/bigdata/ticket/480"> Error
* releasing deferred frees using 1.0.6 against a 1.0.4 journal</a>
*
* @author <a href="mailto:martyncutcher@users.sourceforge.net">Martyn Cutcher</a>
* @version $Id$
*/
public class VerifyCommitRecordIndex {
public static void main(final String[] args) {
if (args.length != 1) {
System.err.println("Usage: <journal filename>");
return;
}
final String fname = args[0];
final File f = new File(fname);
if (!f.exists()) {
System.err.println("File: " + fname + " not found");
return;
}
final Properties props = new Properties();
props.setProperty(Options.FILE, fname);
final Journal jrnl = new Journal(props);
// Check if journal is DISKRW
if (jrnl.getBufferStrategy().getBufferMode() != BufferMode.DiskRW) {
System.err.println("Buffer mode should be DiskRW not " + jrnl.getBufferStrategy().getBufferMode());
return;
}
final RWStrategy rwstrategy = (RWStrategy) jrnl.getBufferStrategy();
final RWStore rwstore = rwstrategy.getStore();
final IIndex commitRecordIndex = jrnl.getReadOnlyCommitRecordIndex();
if (commitRecordIndex == null) {
System.err.println("Unexpected null commit record index");
return;
}
final IndexMetadata metadata = commitRecordIndex
.getIndexMetadata();
final byte[] zeroKey = metadata.getTupleSerializer()
.serializeKey(0L);
final byte[] releaseKey = metadata.getTupleSerializer()
.serializeKey( rwstore.getLastReleaseTime());
final int removed = jrnl.removeCommitRecordEntries(zeroKey, releaseKey);
System.out.println("Commit Record Index verified with " + removed + " records removed");
jrnl.commit();
}
}