private static List<Pair<SSTableReader, Long>> createSSTableAndLengthPairs(
Collection<SSTableReader> collection) {
List<Pair<SSTableReader, Long>> tableLengthPairs =
new ArrayList<Pair<SSTableReader, Long>>(collection.size());
for (SSTableReader table : collection)
tableLengthPairs.add(Pair.create(table, table.onDiskLength()));
return tableLengthPairs;
}
/**
* @param sstables
* @return
*/
public static List<Pair<SSTableReader, Long>> createSSTableAndMinTimestampPairs(
Iterable<SSTableReader> sstables) {
List<Pair<SSTableReader, Long>> sstableMinTimestampPairs =
Lists.newArrayListWithCapacity(Iterables.size(sstables));
for (SSTableReader sstable : sstables)
sstableMinTimestampPairs.add(Pair.create(sstable, sstable.getMinTimestamp()));
return sstableMinTimestampPairs;
}
private void setToRowStart(SSTableReader reader, RowIndexEntry indexEntry, FileDataInput input)
throws IOException {
if (input == null) {
this.file = sstable.getFileDataInput(indexEntry.position);
} else {
this.file = input;
input.seek(indexEntry.position);
}
sstable.decodeKey(ByteBufferUtil.readWithShortLength(file));
SSTableReader.readRowSize(file, sstable.descriptor);
}
private SSTableReader writeSortedContents() throws IOException {
logger.info("Writing " + this);
SSTableWriter writer = cfs.createFlushWriter(columnFamilies.size());
for (Map.Entry<DecoratedKey, ColumnFamily> entry : columnFamilies.entrySet())
writer.append(entry.getKey(), entry.getValue());
SSTableReader ssTable = writer.closeAndOpenReader();
logger.info(
String.format(
"Completed flushing %s (%d bytes)",
ssTable.getFilename(), new File(ssTable.getFilename()).length()));
return ssTable;
}
@Before
public void setup() throws IOException {
job = Job.getInstance();
conf = job.getConfiguration();
attemptId = new TaskAttemptID();
Path inputPath = new Path(TABLE_PATH_STR);
inputSplit = new FileSplit(inputPath, 0, 1, null);
Descriptor desc =
new Descriptor(new File(TABLE_PATH_STR), "keyspace", "columnFamily", 1, false);
doReturn(desc).when(ssTableColumnRecordReader).getDescriptor();
doReturn(desc).when(ssTableRowRecordReader).getDescriptor();
doNothing()
.when(ssTableColumnRecordReader)
.copyTablesToLocal(any(FileSplit.class), any(TaskAttemptContext.class));
doNothing()
.when(ssTableRowRecordReader)
.copyTablesToLocal(any(FileSplit.class), any(TaskAttemptContext.class));
doReturn(ssTableReader)
.when(ssTableColumnRecordReader)
.openSSTableReader(any(IPartitioner.class), any(CFMetaData.class));
doReturn(ssTableReader)
.when(ssTableRowRecordReader)
.openSSTableReader(any(IPartitioner.class), any(CFMetaData.class));
when(ssTableReader.getDirectScanner(null)).thenReturn(tableScanner);
}
@Test
public void testSuperColumnTombstones()
throws IOException, ExecutionException, InterruptedException {
Keyspace keyspace = Keyspace.open(KEYSPACE1);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore("Super1");
cfs.disableAutoCompaction();
DecoratedKey key = Util.dk("tskey");
ByteBuffer scName = ByteBufferUtil.bytes("TestSuperColumn");
// a subcolumn
RowMutation rm = new RowMutation(KEYSPACE1, key.key);
rm.add(
"Super1",
CompositeType.build(scName, ByteBufferUtil.bytes(0)),
ByteBufferUtil.EMPTY_BYTE_BUFFER,
FBUtilities.timestampMicros());
rm.apply();
cfs.forceBlockingFlush();
// shadow the subcolumn with a supercolumn tombstone
rm = new RowMutation(KEYSPACE1, key.key);
rm.deleteRange(
"Super1",
SuperColumns.startOf(scName),
SuperColumns.endOf(scName),
FBUtilities.timestampMicros());
rm.apply();
cfs.forceBlockingFlush();
CompactionManager.instance.performMaximal(cfs);
assertEquals(1, cfs.getSSTables().size());
// check that the shadowed column is gone
SSTableReader sstable = cfs.getSSTables().iterator().next();
Range keyRange =
new Range<RowPosition>(key, sstable.partitioner.getMinimumToken().maxKeyBound());
SSTableScanner scanner = sstable.getScanner(DataRange.forKeyRange(keyRange));
OnDiskAtomIterator iter = scanner.next();
assertEquals(key, iter.getKey());
assert iter.next() instanceof RangeTombstone;
assert !iter.hasNext();
}
@Test
public void testNoExpire() throws ExecutionException, InterruptedException {
ColumnFamilyStore cfs = Keyspace.open("Keyspace1").getColumnFamilyStore("Standard1");
cfs.disableAutoCompaction();
cfs.metadata.gcGraceSeconds(0);
long timestamp = System.currentTimeMillis();
RowMutation rm = new RowMutation("Keyspace1", Util.dk("ttl").key);
rm.add(
"Standard1", ByteBufferUtil.bytes("col"), ByteBufferUtil.EMPTY_BYTE_BUFFER, timestamp, 1);
rm.add(
"Standard1", ByteBufferUtil.bytes("col7"), ByteBufferUtil.EMPTY_BYTE_BUFFER, timestamp, 1);
rm.apply();
cfs.forceBlockingFlush();
rm = new RowMutation("Keyspace1", Util.dk("ttl").key);
rm.add(
"Standard1", ByteBufferUtil.bytes("col2"), ByteBufferUtil.EMPTY_BYTE_BUFFER, timestamp, 1);
rm.apply();
cfs.forceBlockingFlush();
rm = new RowMutation("Keyspace1", Util.dk("ttl").key);
rm.add(
"Standard1", ByteBufferUtil.bytes("col3"), ByteBufferUtil.EMPTY_BYTE_BUFFER, timestamp, 1);
rm.apply();
cfs.forceBlockingFlush();
DecoratedKey noTTLKey = Util.dk("nottl");
rm = new RowMutation("Keyspace1", noTTLKey.key);
rm.add(
"Standard1", ByteBufferUtil.bytes("col311"), ByteBufferUtil.EMPTY_BYTE_BUFFER, timestamp);
rm.apply();
cfs.forceBlockingFlush();
Thread.sleep(2000); // wait for ttl to expire
assertEquals(4, cfs.getSSTables().size());
cfs.enableAutoCompaction(true);
assertEquals(1, cfs.getSSTables().size());
SSTableReader sstable = cfs.getSSTables().iterator().next();
SSTableScanner scanner = sstable.getScanner(DataRange.allData(sstable.partitioner));
assertTrue(scanner.hasNext());
while (scanner.hasNext()) {
OnDiskAtomIterator iter = scanner.next();
assertEquals(noTTLKey, iter.getKey());
}
}
@Test
public void testImportSimpleCf() throws IOException, ParseException {
// Import JSON to temp SSTable file
String jsonUrl = getClass().getClassLoader().getResource("SimpleCF.json").getPath();
File tempSS = tempSSTableFile("Keyspace1", "Standard1");
SSTableImport.importJson(jsonUrl, "Keyspace1", "Standard1", tempSS.getPath());
// Verify results
SSTableReader reader =
SSTableReader.open(tempSS.getPath(), DatabaseDescriptor.getPartitioner());
QueryFilter qf =
QueryFilter.getNamesFilter(
"rowA", new QueryPath("Standard1", null, null), "colAA".getBytes());
ColumnFamily cf = qf.getSSTableColumnIterator(reader).getColumnFamily();
assert Arrays.equals(cf.getColumn("colAA".getBytes()).value(), hexToBytes("76616c4141"));
}
public IndexedSliceReader(
SSTableReader sstable,
RowIndexEntry indexEntry,
FileDataInput input,
ByteBuffer startColumn,
ByteBuffer finishColumn,
boolean reversed) {
this.sstable = sstable;
this.originalInput = input;
this.startColumn = startColumn;
this.finishColumn = finishColumn;
this.reversed = reversed;
this.comparator = sstable.metadata.comparator;
try {
if (sstable.descriptor.hasPromotedIndexes) {
this.indexes = indexEntry.columnsIndex();
if (indexes.isEmpty()) {
setToRowStart(sstable, indexEntry, input);
this.emptyColumnFamily =
ColumnFamily.serializer()
.deserializeFromSSTableNoColumns(ColumnFamily.create(sstable.metadata), file);
fetcher = new SimpleBlockFetcher();
} else {
this.emptyColumnFamily = ColumnFamily.create(sstable.metadata);
emptyColumnFamily.delete(indexEntry.deletionInfo());
fetcher = new IndexedBlockFetcher(indexEntry);
}
} else {
setToRowStart(sstable, indexEntry, input);
IndexHelper.skipBloomFilter(file);
this.indexes = IndexHelper.deserializeIndex(file);
this.emptyColumnFamily =
ColumnFamily.serializer()
.deserializeFromSSTableNoColumns(ColumnFamily.create(sstable.metadata), file);
fetcher = indexes.isEmpty() ? new SimpleBlockFetcher() : new IndexedBlockFetcher();
}
} catch (IOException e) {
sstable.markSuspect();
throw new IOError(e);
}
}
protected List<Long> getMaxTimestampList(ColumnFamilyStore cfs) {
List<Long> list = new LinkedList<Long>();
for (SSTableReader sstable : cfs.getSSTables()) list.add(sstable.getMaxTimestamp());
return list;
}
/**
* Retrieves a local subBlock
*
* @param blockId row key
* @param sblockId SubBlock column name
* @param offset inside the sblock
* @return a local sublock
* @throws TException
*/
private LocalBlock getLocalSubBlock(
String subBlockCFName, ByteBuffer blockId, ByteBuffer sblockId, int offset)
throws TException {
DecoratedKey<Token<?>> decoratedKey =
new DecoratedKey<Token<?>>(StorageService.getPartitioner().getToken(blockId), blockId);
Table table = Table.open(cfsKeyspace);
ColumnFamilyStore sblockStore = table.getColumnFamilyStore(subBlockCFName);
Collection<SSTableReader> sstables = sblockStore.getSSTables();
for (SSTableReader sstable : sstables) {
long position = sstable.getPosition(decoratedKey, Operator.EQ);
if (position == -1) continue;
String filename = sstable.descriptor.filenameFor(Component.DATA);
RandomAccessFile raf = null;
int mappedLength = -1;
MappedByteBuffer mappedData = null;
MappedFileDataInput file = null;
try {
raf = new RandomAccessFile(filename, "r");
assert position < raf.length();
mappedLength =
(raf.length() - position) < Integer.MAX_VALUE
? (int) (raf.length() - position)
: Integer.MAX_VALUE;
mappedData = raf.getChannel().map(FileChannel.MapMode.READ_ONLY, position, mappedLength);
file = new MappedFileDataInput(mappedData, filename, 0);
if (file == null) continue;
// Verify key was found in data file
DecoratedKey keyInDisk =
SSTableReader.decodeKey(
sstable.partitioner, sstable.descriptor, ByteBufferUtil.readWithShortLength(file));
assert keyInDisk.equals(decoratedKey)
: String.format("%s != %s in %s", keyInDisk, decoratedKey, file.getPath());
long rowSize = SSTableReader.readRowSize(file, sstable.descriptor);
assert rowSize > 0;
assert rowSize < mappedLength;
Filter bf = IndexHelper.defreezeBloomFilter(file, sstable.descriptor.usesOldBloomFilter);
// verify this column in in this version of the row.
if (!bf.isPresent(sblockId)) continue;
List<IndexHelper.IndexInfo> indexList = IndexHelper.deserializeIndex(file);
// we can stop early if bloom filter says none of the
// columns actually exist -- but,
// we can't stop before initializing the cf above, in
// case there's a relevant tombstone
ColumnFamilySerializer serializer = ColumnFamily.serializer();
try {
ColumnFamily cf =
serializer.deserializeFromSSTableNoColumns(
ColumnFamily.create(sstable.metadata), file);
if (cf.isMarkedForDelete()) continue;
} catch (Exception e) {
e.printStackTrace();
throw new IOException(
serializer
+ " failed to deserialize "
+ sstable.getColumnFamilyName()
+ " with "
+ sstable.metadata
+ " from "
+ file,
e);
}
Integer sblockLength = null;
if (indexList == null) sblockLength = seekToSubColumn(sstable.metadata, file, sblockId);
else sblockLength = seekToSubColumn(sstable.metadata, file, sblockId, indexList);
if (sblockLength == null || sblockLength < 0) continue;
int bytesReadFromStart = mappedLength - (int) file.bytesRemaining();
if (logger.isDebugEnabled())
logger.debug("BlockLength = " + sblockLength + " Availible " + file.bytesRemaining());
assert offset <= sblockLength : String.format("%d > %d", offset, sblockLength);
long dataOffset = position + bytesReadFromStart;
if (file.bytesRemaining() == 0 || sblockLength == 0) continue;
return new LocalBlock(file.getPath(), dataOffset + offset, sblockLength - offset);
} catch (IOException e) {
throw new TException(e);
} finally {
FileUtils.closeQuietly(raf);
}
}
return null;
}
public static void main(String args[]) throws IOException {
Options options = Options.parseArgs(args);
try {
// load keyspace descriptions.
DatabaseDescriptor.loadSchemas();
String ksName = null;
String cfName = null;
Map<Descriptor, Set<Component>> parsedFilenames = new HashMap<Descriptor, Set<Component>>();
for (String filename : options.filenames) {
File file = new File(filename);
if (!file.exists()) {
System.out.println("Skipping inexisting file " + file);
continue;
}
Pair<Descriptor, Component> pair =
SSTable.tryComponentFromFilename(file.getParentFile(), file.getName());
if (pair == null) {
System.out.println("Skipping non sstable file " + file);
continue;
}
Descriptor desc = pair.left;
if (ksName == null) ksName = desc.ksname;
else if (!ksName.equals(desc.ksname))
throw new IllegalArgumentException("All sstables must be part of the same keyspace");
if (cfName == null) cfName = desc.cfname;
else if (!cfName.equals(desc.cfname))
throw new IllegalArgumentException("All sstables must be part of the same column family");
Set<Component> components =
new HashSet<Component>(
Arrays.asList(
new Component[] {
Component.DATA,
Component.PRIMARY_INDEX,
Component.FILTER,
Component.COMPRESSION_INFO,
Component.STATS
}));
Iterator<Component> iter = components.iterator();
while (iter.hasNext()) {
Component component = iter.next();
if (!(new File(desc.filenameFor(component)).exists())) iter.remove();
}
parsedFilenames.put(desc, components);
}
if (ksName == null || cfName == null) {
System.err.println("No valid sstables to split");
System.exit(1);
}
// Do not load sstables since they might be broken
Table table = Table.openWithoutSSTables(ksName);
ColumnFamilyStore cfs = table.getColumnFamilyStore(cfName);
String snapshotName = "pre-split-" + System.currentTimeMillis();
List<SSTableReader> sstables = new ArrayList<SSTableReader>();
for (Map.Entry<Descriptor, Set<Component>> fn : parsedFilenames.entrySet()) {
try {
SSTableReader sstable =
SSTableReader.openNoValidation(fn.getKey(), fn.getValue(), cfs.metadata);
sstables.add(sstable);
if (options.snapshot) {
File snapshotDirectory =
Directories.getSnapshotDirectory(sstable.descriptor, snapshotName);
sstable.createLinks(snapshotDirectory.getPath());
}
} catch (Exception e) {
System.err.println(String.format("Error Loading %s: %s", fn.getKey(), e.getMessage()));
if (options.debug) e.printStackTrace(System.err);
}
}
if (options.snapshot)
System.out.println(
String.format("Pre-split sstables snapshotted into snapshot %s", snapshotName));
cfs.getDataTracker().markCompacting(sstables);
for (SSTableReader sstable : sstables) {
try {
new SSTableSplitter(cfs, sstable, options.sizeInMB).split();
// Remove the sstable
sstable.markCompacted();
sstable.releaseReference();
} catch (Exception e) {
System.err.println(String.format("Error splitting %s: %s", sstable, e.getMessage()));
if (options.debug) e.printStackTrace(System.err);
}
}
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);
}
}
@Test
public void testRangeTombstones() throws IOException, ExecutionException, InterruptedException {
Keyspace keyspace = Keyspace.open(KEYSPACE1);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore("Standard2");
cfs.clearUnsafe();
// disable compaction while flushing
cfs.disableAutoCompaction();
final CFMetaData cfmeta = cfs.metadata;
Directories dir = cfs.directories;
ArrayList<DecoratedKey> keys = new ArrayList<DecoratedKey>();
for (int i = 0; i < 4; i++) {
keys.add(Util.dk("" + i));
}
ArrayBackedSortedColumns cf = ArrayBackedSortedColumns.factory.create(cfmeta);
cf.addColumn(Util.column("01", "a", 1)); // this must not resurrect
cf.addColumn(Util.column("a", "a", 3));
cf.deletionInfo()
.add(
new RangeTombstone(
Util.cellname("0"),
Util.cellname("b"),
2,
(int) (System.currentTimeMillis() / 1000)),
cfmeta.comparator);
SSTableWriter writer =
new SSTableWriter(
cfs.getTempSSTablePath(dir.getDirectoryForNewSSTables()),
0,
0,
cfs.metadata,
StorageService.getPartitioner(),
new MetadataCollector(cfs.metadata.comparator));
writer.append(Util.dk("0"), cf);
writer.append(Util.dk("1"), cf);
writer.append(Util.dk("3"), cf);
cfs.addSSTable(writer.closeAndOpenReader());
writer =
new SSTableWriter(
cfs.getTempSSTablePath(dir.getDirectoryForNewSSTables()),
0,
0,
cfs.metadata,
StorageService.getPartitioner(),
new MetadataCollector(cfs.metadata.comparator));
writer.append(Util.dk("0"), cf);
writer.append(Util.dk("1"), cf);
writer.append(Util.dk("2"), cf);
writer.append(Util.dk("3"), cf);
cfs.addSSTable(writer.closeAndOpenReader());
Collection<SSTableReader> toCompact = cfs.getSSTables();
assert toCompact.size() == 2;
// Force compaction on first sstables. Since each row is in only one sstable, we will be using
// EchoedRow.
Util.compact(cfs, toCompact);
assertEquals(1, cfs.getSSTables().size());
// Now assert we do have the 4 keys
assertEquals(4, Util.getRangeSlice(cfs).size());
ArrayList<DecoratedKey> k = new ArrayList<DecoratedKey>();
for (Row r : Util.getRangeSlice(cfs)) {
k.add(r.key);
assertEquals(ByteBufferUtil.bytes("a"), r.cf.getColumn(Util.cellname("a")).value());
assertNull(r.cf.getColumn(Util.cellname("01")));
assertEquals(3, r.cf.getColumn(Util.cellname("a")).timestamp());
}
for (SSTableReader sstable : cfs.getSSTables()) {
StatsMetadata stats = sstable.getSSTableMetadata();
assertEquals(ByteBufferUtil.bytes("0"), stats.minColumnNames.get(0));
assertEquals(ByteBufferUtil.bytes("b"), stats.maxColumnNames.get(0));
}
assertEquals(keys, k);
}
public static void assertMaxTimestamp(ColumnFamilyStore cfs, long maxTimestampExpected) {
long maxTimestampObserved = Long.MIN_VALUE;
for (SSTableReader sstable : cfs.getSSTables())
maxTimestampObserved = Math.max(sstable.getMaxTimestamp(), maxTimestampObserved);
assertEquals(maxTimestampExpected, maxTimestampObserved);
}
@Test
public void testParallelLeveledCompaction() throws Exception {
String ksname = "Keyspace1";
String cfname = "StandardLeveled";
Keyspace keyspace = Keyspace.open(ksname);
ColumnFamilyStore store = keyspace.getColumnFamilyStore(cfname);
store.disableAutoCompaction();
LeveledCompactionStrategy lcs = (LeveledCompactionStrategy) store.getCompactionStrategy();
ByteBuffer value =
ByteBuffer.wrap(new byte[100 * 1024]); // 100 KB value, make it easy to have multiple files
// Enough data to have a level 1 and 2
int rows = 128;
int columns = 10;
// Adds enough data to trigger multiple sstable per level
for (int r = 0; r < rows; r++) {
DecoratedKey key = Util.dk(String.valueOf(r));
RowMutation rm = new RowMutation(ksname, key.key);
for (int c = 0; c < columns; c++) {
rm.add(cfname, ByteBufferUtil.bytes("column" + c), value, 0);
}
rm.apply();
store.forceBlockingFlush();
}
// Execute LCS in parallel
ExecutorService executor =
new ThreadPoolExecutor(
4, 4, Long.MAX_VALUE, TimeUnit.SECONDS, new LinkedBlockingDeque<Runnable>());
List<Runnable> tasks = new ArrayList<Runnable>();
while (true) {
while (true) {
final AbstractCompactionTask t = lcs.getMaximalTask(Integer.MIN_VALUE);
if (t == null) break;
tasks.add(
new Runnable() {
public void run() {
t.execute(null);
}
});
}
if (tasks.isEmpty()) break;
List<Future<?>> futures = new ArrayList<Future<?>>(tasks.size());
for (Runnable r : tasks) futures.add(executor.submit(r));
FBUtilities.waitOnFutures(futures);
tasks.clear();
}
// Assert all SSTables are lined up correctly.
LeveledManifest manifest = lcs.manifest;
int levels = manifest.getLevelCount();
for (int level = 0; level < levels; level++) {
List<SSTableReader> sstables = manifest.getLevel(level);
// score check
assert (double) SSTable.getTotalBytes(sstables) / manifest.maxBytesForLevel(level) < 1.00;
// overlap check for levels greater than 0
if (level > 0) {
for (SSTableReader sstable : sstables) {
Set<SSTableReader> overlaps = LeveledManifest.overlapping(sstable, sstables);
assert overlaps.size() == 1 && overlaps.contains(sstable);
}
}
}
for (SSTableReader sstable : store.getSSTables()) {
assert sstable.getSSTableLevel() == sstable.getSSTableLevel();
}
}
public static void main(String args[]) throws IOException {
Options options = Options.parseArgs(args);
try {
// load keyspace descriptions.
DatabaseDescriptor.loadSchemas(false);
if (Schema.instance.getCFMetaData(options.keyspace, options.cf) == null)
throw new IllegalArgumentException(
String.format("Unknown keyspace/columnFamily %s.%s", options.keyspace, options.cf));
Keyspace keyspace = Keyspace.openWithoutSSTables(options.keyspace);
ColumnFamilyStore cfs = keyspace.getColumnFamilyStore(options.cf);
OutputHandler handler = new OutputHandler.SystemOutput(false, options.debug);
Directories.SSTableLister lister = cfs.directories.sstableLister();
if (options.snapshot != null) lister.onlyBackups(true).snapshots(options.snapshot);
else lister.includeBackups(false);
Collection<SSTableReader> readers = new ArrayList<SSTableReader>();
// Upgrade 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);
if (sstable.descriptor.version.equals(Descriptor.Version.CURRENT)) continue;
readers.add(sstable);
} catch (Exception e) {
JVMStabilityInspector.inspectThrowable(e);
System.err.println(String.format("Error Loading %s: %s", entry.getKey(), e.getMessage()));
if (options.debug) e.printStackTrace(System.err);
continue;
}
}
int numSSTables = readers.size();
handler.output("Found " + numSSTables + " sstables that need upgrading.");
for (SSTableReader sstable : readers) {
try {
Upgrader upgrader = new Upgrader(cfs, sstable, handler);
upgrader.upgrade();
if (!options.keepSource) {
// Remove the sstable (it's been copied by upgrade)
System.out.format("Deleting table %s.%n", sstable.descriptor.baseFilename());
sstable.markObsolete();
sstable.selfRef().release();
}
} catch (Exception e) {
System.err.println(String.format("Error upgrading %s: %s", sstable, e.getMessage()));
if (options.debug) e.printStackTrace(System.err);
}
}
CompactionManager.instance.finishCompactionsAndShutdown(5, TimeUnit.MINUTES);
SSTableDeletingTask.waitForDeletions();
System.exit(0);
} catch (Exception e) {
System.err.println(e.getMessage());
if (options.debug) e.printStackTrace(System.err);
System.exit(1);
}
}
