/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.cassandra.tools;
import java.io.File;
import java.io.IOException;
import java.util.*;
import org.apache.commons.cli.*;
import org.apache.cassandra.config.DatabaseDescriptor;
import org.apache.cassandra.config.Schema;
import org.apache.cassandra.db.ColumnFamilyStore;
import org.apache.cassandra.db.Directories;
import org.apache.cassandra.db.Table;
import org.apache.cassandra.db.compaction.LeveledManifest;
import org.apache.cassandra.db.compaction.Scrubber;
import org.apache.cassandra.io.sstable.*;
import org.apache.cassandra.service.AbstractCassandraDaemon;
import org.apache.cassandra.utils.OutputHandler;
import static org.apache.cassandra.tools.BulkLoader.CmdLineOptions;
public class StandaloneScrubber
{
static
{
AbstractCassandraDaemon.initLog4j();
}
private static final String TOOL_NAME = "sstablescrub";
private static final String VERBOSE_OPTION = "verbose";
private static final String DEBUG_OPTION = "debug";
private static final String HELP_OPTION = "help";
private static final String MANIFEST_CHECK_OPTION = "manifest-check";
public static void main(String args[]) throws IOException
{
Options options = Options.parseArgs(args);
try
{
// load keyspace descriptions.
DatabaseDescriptor.loadSchemas();
if (Schema.instance.getCFMetaData(options.tableName, options.cfName) == null)
throw new IllegalArgumentException(String.format("Unknown keyspace/columnFamily %s.%s",
options.tableName,
options.cfName));
// Do not load sstables since they might be broken
Table table = Table.openWithoutSSTables(options.tableName);
ColumnFamilyStore cfs = table.getColumnFamilyStore(options.cfName);
String snapshotName = "pre-scrub-" + System.currentTimeMillis();
OutputHandler handler = new OutputHandler.SystemOutput(options.verbose, options.debug);
Directories.SSTableLister lister = cfs.directories.sstableLister().skipCompacted(true).skipTemporary(true);
List<SSTableReader> sstables = new ArrayList<SSTableReader>();
// Scrub sstables
for (Map.Entry<Descriptor, Set<Component>> entry : lister.list().entrySet())
{
Set<Component> components = entry.getValue();
if (!components.contains(Component.DATA) || !components.contains(Component.PRIMARY_INDEX))
continue;
try
{
SSTableReader sstable = SSTableReader.openNoValidation(entry.getKey(), components, cfs.metadata);
sstables.add(sstable);
File snapshotDirectory = Directories.getSnapshotDirectory(sstable.descriptor, snapshotName);
sstable.createLinks(snapshotDirectory.getPath());
}
catch (Exception e)
{
System.err.println(String.format("Error Loading %s: %s", entry.getKey(), e.getMessage()));
if (options.debug)
e.printStackTrace(System.err);
}
}
System.out.println(String.format("Pre-scrub sstables snapshotted into snapshot %s", snapshotName));
// If leveled, load the manifest
LeveledManifest manifest = null;
if (cfs.directories.tryGetLeveledManifest() != null)
{
cfs.directories.snapshotLeveledManifest(snapshotName);
System.out.println(String.format("Leveled manifest snapshotted into snapshot %s", snapshotName));
int maxSizeInMB = (int)((cfs.getCompactionStrategy().getMaxSSTableSize()) / (1024L * 1024L));
manifest = LeveledManifest.create(cfs, maxSizeInMB, sstables);
}
if (!options.manifestCheckOnly)
{
for (SSTableReader sstable : sstables)
{
try
{
Scrubber scrubber = new Scrubber(cfs, sstable, handler, true);
try
{
scrubber.scrub();
}
finally
{
scrubber.close();
}
if (manifest != null)
{
if (scrubber.getNewInOrderSSTable() != null)
manifest.add(scrubber.getNewInOrderSSTable());
List<SSTableReader> added = scrubber.getNewSSTable() == null
? Collections.<SSTableReader>emptyList()
: Collections.singletonList(scrubber.getNewSSTable());
manifest.replace(Collections.singletonList(sstable), added);
}
// Remove the sstable (it's been copied by scrub and snapshotted)
sstable.markCompacted();
sstable.releaseReference();
}
catch (Exception e)
{
System.err.println(String.format("Error scrubbing %s: %s", sstable, e.getMessage()));
if (options.debug)
e.printStackTrace(System.err);
}
}
}
// Check (and repair) manifest
if (manifest != null)
checkManifest(manifest);
SSTableDeletingTask.waitForDeletions();
System.exit(0); // We need that to stop non daemonized threads
}
catch (Exception e)
{
System.err.println(e.getMessage());
if (options.debug)
e.printStackTrace(System.err);
System.exit(1);
}
}
private static void checkManifest(LeveledManifest manifest)
{
System.out.println(String.format("Checking leveled manifest"));
for (int i = 1; i <= manifest.getLevelCount(); ++i)
manifest.repairOverlappingSSTables(i);
}
private static class Options
{
public final String tableName;
public final String cfName;
public boolean debug;
public boolean verbose;
public boolean manifestCheckOnly;
private Options(String tableName, String cfName)
{
this.tableName = tableName;
this.cfName = cfName;
}
public static Options parseArgs(String cmdArgs[])
{
CommandLineParser parser = new GnuParser();
CmdLineOptions options = getCmdLineOptions();
try
{
CommandLine cmd = parser.parse(options, cmdArgs, false);
if (cmd.hasOption(HELP_OPTION))
{
printUsage(options);
System.exit(0);
}
String[] args = cmd.getArgs();
if (args.length != 2)
{
String msg = args.length < 2 ? "Missing arguments" : "Too many arguments";
System.err.println(msg);
printUsage(options);
System.exit(1);
}
String tableName = args[0];
String cfName = args[1];
Options opts = new Options(tableName, cfName);
opts.debug = cmd.hasOption(DEBUG_OPTION);
opts.verbose = cmd.hasOption(VERBOSE_OPTION);
opts.manifestCheckOnly = cmd.hasOption(MANIFEST_CHECK_OPTION);
return opts;
}
catch (ParseException e)
{
errorMsg(e.getMessage(), options);
return null;
}
}
private static void errorMsg(String msg, CmdLineOptions options)
{
System.err.println(msg);
printUsage(options);
System.exit(1);
}
private static CmdLineOptions getCmdLineOptions()
{
CmdLineOptions options = new CmdLineOptions();
options.addOption(null, DEBUG_OPTION, "display stack traces");
options.addOption("v", VERBOSE_OPTION, "verbose output");
options.addOption("h", HELP_OPTION, "display this help message");
options.addOption("m", MANIFEST_CHECK_OPTION, "only check and repair the leveled manifest, without actually scrubbing the sstables");
return options;
}
public static void printUsage(CmdLineOptions options)
{
String usage = String.format("%s [options] <keyspace> <column_family>", TOOL_NAME);
StringBuilder header = new StringBuilder();
header.append("--\n");
header.append("Scrub the sstable for the provided column family." );
header.append("\n--\n");
header.append("Options are:");
new HelpFormatter().printHelp(usage, header.toString(), options, "");
}
}
}