/**
* Write out an info file under the region directory. Useful recovering mangled regions.
*
* @param regionInfoContent serialized version of the {@link HRegionInfo}
* @param useTempDir indicate whether or not using the region .tmp dir for a safer file creation.
*/
private void writeRegionInfoOnFilesystem(final byte[] regionInfoContent, final boolean useTempDir)
throws IOException {
Path regionInfoFile = new Path(getRegionDir(), REGION_INFO_FILE);
if (useTempDir) {
// Create in tmpDir and then move into place in case we crash after
// create but before close. If we don't successfully close the file,
// subsequent region reopens will fail the below because create is
// registered in NN.
// And then create the file
Path tmpPath = new Path(getTempDir(), REGION_INFO_FILE);
// If datanode crashes or if the RS goes down just before the close is called while trying to
// close the created regioninfo file in the .tmp directory then on next
// creation we will be getting AlreadyCreatedException.
// Hence delete and create the file if exists.
if (FSUtils.isExists(fs, tmpPath)) {
FSUtils.delete(fs, tmpPath, true);
}
// Write HRI to a file in case we need to recover hbase:meta
writeRegionInfoFileContent(conf, fs, tmpPath, regionInfoContent);
// Move the created file to the original path
if (fs.exists(tmpPath) && !rename(tmpPath, regionInfoFile)) {
throw new IOException("Unable to rename " + tmpPath + " to " + regionInfoFile);
}
} else {
// Write HRI to a file in case we need to recover hbase:meta
writeRegionInfoFileContent(conf, fs, regionInfoFile, regionInfoContent);
}
}
/**
* Get the directory to archive a store directory
*
* @param conf {@link Configuration} to read for the archive directory name.
* @param region parent region information under which the store currently lives
* @param tabledir directory for the table under which the store currently lives
* @param family name of the family in the store
* @return {@link Path} to the directory to archive the given store or <tt>null</tt> if it should
* not be archived
*/
public static Path getStoreArchivePath(
Configuration conf, HRegionInfo region, Path tabledir, byte[] family) throws IOException {
TableName tableName = FSUtils.getTableName(tabledir);
Path rootDir = FSUtils.getRootDir(conf);
Path tableArchiveDir = getTableArchivePath(rootDir, tableName);
return HStore.getStoreHomedir(tableArchiveDir, region, family);
}
static boolean shouldShowAppendWarning(Configuration conf) {
try {
return !FSUtils.isAppendSupported(conf) && FSUtils.isHDFS(conf);
} catch (IOException e) {
LOG.warn("Unable to determine if append is supported", e);
return false;
}
}
/** Deletes a table's directory from the file system if exists. Used in unit tests. */
public static void deleteTableDescriptorIfExists(String tableName, Configuration conf)
throws IOException {
FileSystem fs = FSUtils.getCurrentFileSystem(conf);
FileStatus status = getTableInfoPath(fs, FSUtils.getRootDir(conf), tableName);
// The below deleteDirectory works for either file or directory.
if (status != null && fs.exists(status.getPath())) {
FSUtils.deleteDirectory(fs, status.getPath());
}
}
@Test
public void testFsUriSetProperly() throws Exception {
HMaster master = UTIL.getMiniHBaseCluster().getMaster();
MasterFileSystem fs = master.getMasterFileSystem();
Path masterRoot = FSUtils.getRootDir(fs.conf);
Path rootDir = FSUtils.getRootDir(fs.getFileSystem().getConf());
// make sure the fs and the found root dir have the same scheme
LOG.debug("from fs uri:" + FileSystem.getDefaultUri(fs.getFileSystem().getConf()));
LOG.debug("from configuration uri:" + FileSystem.getDefaultUri(fs.conf));
// make sure the set uri matches by forcing it.
assertEquals(masterRoot, rootDir);
}
/**
* Checks to see if the file system is still accessible.
* If not, sets closed
* @return false if file system is not available
*/
public boolean checkFileSystem() {
if (this.fsOk) {
try {
FSUtils.checkFileSystemAvailable(this.fs);
FSUtils.checkDfsSafeMode(this.conf);
} catch (IOException e) {
master.abort("Shutting down HBase cluster: file system not available", e);
this.fsOk = false;
}
}
return this.fsOk;
}
/**
* @param fs
* @param hTableDescriptor
* @param tableDir
* @param status
* @return Descriptor file or null if we failed write.
* @throws IOException
*/
private static Path writeTableDescriptor(
final FileSystem fs,
final HTableDescriptor hTableDescriptor,
final Path tableDir,
final FileStatus status)
throws IOException {
// Get temporary dir into which we'll first write a file to avoid
// half-written file phenomeon.
Path tmpTableDir = new Path(tableDir, ".tmp");
// What is current sequenceid? We read the current sequenceid from
// the current file. After we read it, another thread could come in and
// compete with us writing out next version of file. The below retries
// should help in this case some but its hard to do guarantees in face of
// concurrent schema edits.
int currentSequenceid = status == null ? 0 : getTableInfoSequenceid(status.getPath());
int sequenceid = currentSequenceid;
// Put arbitrary upperbound on how often we retry
int retries = 10;
int retrymax = currentSequenceid + retries;
Path tableInfoPath = null;
do {
sequenceid += 1;
Path p = getTableInfoFileName(tmpTableDir, sequenceid);
if (fs.exists(p)) {
LOG.debug(p + " exists; retrying up to " + retries + " times");
continue;
}
try {
writeHTD(fs, p, hTableDescriptor);
tableInfoPath = getTableInfoFileName(tableDir, sequenceid);
if (!fs.rename(p, tableInfoPath)) {
throw new IOException("Failed rename of " + p + " to " + tableInfoPath);
}
} catch (IOException ioe) {
// Presume clash of names or something; go around again.
LOG.debug("Failed write and/or rename; retrying", ioe);
if (!FSUtils.deleteDirectory(fs, p)) {
LOG.warn("Failed cleanup of " + p);
}
tableInfoPath = null;
continue;
}
// Cleanup old schema file.
if (status != null) {
if (!FSUtils.deleteDirectory(fs, status.getPath())) {
LOG.warn("Failed delete of " + status.getPath() + "; continuing");
}
}
break;
} while (sequenceid < retrymax);
return tableInfoPath;
}
/**
* Remove the region from the table directory, archiving the region's hfiles.
*
* @param conf the {@link Configuration} to use
* @param fs {@link FileSystem} from which to remove the region
* @param tableDir {@link Path} to where the table is being stored
* @param regionInfo {@link HRegionInfo} for region to be deleted
* @throws IOException if the request cannot be completed
*/
public static void deleteRegionFromFileSystem(
final Configuration conf,
final FileSystem fs,
final Path tableDir,
final HRegionInfo regionInfo)
throws IOException {
HRegionFileSystem regionFs = new HRegionFileSystem(conf, fs, tableDir, regionInfo);
Path regionDir = regionFs.getRegionDir();
if (!fs.exists(regionDir)) {
LOG.warn("Trying to delete a region that do not exists on disk: " + regionDir);
return;
}
if (LOG.isDebugEnabled()) {
LOG.debug("DELETING region " + regionDir);
}
// Archive region
Path rootDir = FSUtils.getRootDir(conf);
HFileArchiver.archiveRegion(fs, rootDir, tableDir, regionDir);
// Delete empty region dir
if (!fs.delete(regionDir, true)) {
LOG.warn("Failed delete of " + regionDir);
}
}
/**
* Looks under the table directory in the filesystem for files with a {@link #TABLEINFO_NAME}
* prefix. Returns reference to the 'latest' instance.
*
* @param fs
* @param tabledir
* @return The 'current' tableinfo file.
* @throws IOException
*/
public static FileStatus getTableInfoPath(final FileSystem fs, final Path tabledir)
throws IOException {
FileStatus[] status =
FSUtils.listStatus(
fs,
tabledir,
new PathFilter() {
@Override
public boolean accept(Path p) {
// Accept any file that starts with TABLEINFO_NAME
return p.getName().startsWith(TABLEINFO_NAME);
}
});
if (status == null || status.length < 1) return null;
Arrays.sort(status, new FileStatusFileNameComparator());
if (status.length > 1) {
// Clean away old versions of .tableinfo
for (int i = 1; i < status.length; i++) {
Path p = status[i].getPath();
// Clean up old versions
if (!fs.delete(p, false)) {
LOG.warn("Failed cleanup of " + status);
} else {
LOG.debug("Cleaned up old tableinfo file " + p);
}
}
}
return status[0];
}
/**
* Verify the region placement is consistent with the assignment plan
*
* @param isDetailMode
* @return reports
* @throws IOException
*/
public List<AssignmentVerificationReport> verifyRegionPlacement(boolean isDetailMode)
throws IOException {
System.out.println(
"Start to verify the region assignment and " + "generate the verification report");
// Get the region assignment snapshot
SnapshotOfRegionAssignmentFromMeta snapshot = this.getRegionAssignmentSnapshot();
// Get all the tables
Set<TableName> tables = snapshot.getTableSet();
// Get the region locality map
Map<String, Map<String, Float>> regionLocalityMap = null;
if (this.enforceLocality == true) {
regionLocalityMap = FSUtils.getRegionDegreeLocalityMappingFromFS(conf);
}
List<AssignmentVerificationReport> reports = new ArrayList<AssignmentVerificationReport>();
// Iterate all the tables to fill up the verification report
for (TableName table : tables) {
if (!this.targetTableSet.isEmpty() && !this.targetTableSet.contains(table)) {
continue;
}
AssignmentVerificationReport report = new AssignmentVerificationReport();
report.fillUp(table, snapshot, regionLocalityMap);
report.print(isDetailMode);
reports.add(report);
}
return reports;
}
/**
* Spin up a bunch of threads and have them all append to a WAL. Roll the WAL frequently to try
* and trigger NPE.
*
* @throws IOException
* @throws InterruptedException
*/
@Test
public void testContendedLogRolling() throws IOException, InterruptedException {
FileSystem fs = FileSystem.get(TEST_UTIL.getConfiguration());
Path dir = TEST_UTIL.getDataTestDir();
// The implementation needs to know the 'handler' count.
TEST_UTIL.getConfiguration().setInt(HConstants.REGION_SERVER_HANDLER_COUNT, THREAD_COUNT);
final Configuration conf = new Configuration(TEST_UTIL.getConfiguration());
FSUtils.setRootDir(conf, dir);
final WALFactory wals = new WALFactory(conf, null, TestLogRollingNoCluster.class.getName());
final WAL wal = wals.getWAL(new byte[] {});
Appender[] appenders = null;
final int count = THREAD_COUNT;
appenders = new Appender[count];
try {
for (int i = 0; i < count; i++) {
// Have each appending thread write 'count' entries
appenders[i] = new Appender(wal, i, count);
}
for (int i = 0; i < count; i++) {
appenders[i].start();
}
for (int i = 0; i < count; i++) {
// ensure that all threads are joined before closing the wal
appenders[i].join();
}
} finally {
wals.close();
}
for (int i = 0; i < count; i++) {
assertFalse(appenders[i].isException());
}
}
/**
* Assert that getSplitEditFilesSorted returns files in expected order and that it skips
* moved-aside files.
*
* @throws IOException
*/
@Test
public void testGetSplitEditFilesSorted() throws IOException {
FileSystem fs = FileSystem.get(util.getConfiguration());
Path regiondir = util.getDataTestDir("regiondir");
fs.delete(regiondir, true);
fs.mkdirs(regiondir);
Path recoverededits = WALSplitter.getRegionDirRecoveredEditsDir(regiondir);
String first = WALSplitter.formatRecoveredEditsFileName(-1);
createFile(fs, recoverededits, first);
createFile(fs, recoverededits, WALSplitter.formatRecoveredEditsFileName(0));
createFile(fs, recoverededits, WALSplitter.formatRecoveredEditsFileName(1));
createFile(fs, recoverededits, WALSplitter.formatRecoveredEditsFileName(11));
createFile(fs, recoverededits, WALSplitter.formatRecoveredEditsFileName(2));
createFile(fs, recoverededits, WALSplitter.formatRecoveredEditsFileName(50));
String last = WALSplitter.formatRecoveredEditsFileName(Long.MAX_VALUE);
createFile(fs, recoverededits, last);
createFile(
fs, recoverededits, Long.toString(Long.MAX_VALUE) + "." + System.currentTimeMillis());
final Configuration walConf = new Configuration(util.getConfiguration());
FSUtils.setRootDir(walConf, regiondir);
(new WALFactory(walConf, null, "dummyLogName")).getWAL(new byte[] {}, null);
NavigableSet<Path> files = WALSplitter.getSplitEditFilesSorted(fs, regiondir);
assertEquals(7, files.size());
assertEquals(files.pollFirst().getName(), first);
assertEquals(files.pollLast().getName(), last);
assertEquals(files.pollFirst().getName(), WALSplitter.formatRecoveredEditsFileName(0));
assertEquals(files.pollFirst().getName(), WALSplitter.formatRecoveredEditsFileName(1));
assertEquals(files.pollFirst().getName(), WALSplitter.formatRecoveredEditsFileName(2));
assertEquals(files.pollFirst().getName(), WALSplitter.formatRecoveredEditsFileName(11));
}
/** Write the .regioninfo file on-disk. */
private static void writeRegionInfoFileContent(
final Configuration conf,
final FileSystem fs,
final Path regionInfoFile,
final byte[] content)
throws IOException {
// First check to get the permissions
FsPermission perms = FSUtils.getFilePermissions(fs, conf, HConstants.DATA_FILE_UMASK_KEY);
// Write the RegionInfo file content
FSDataOutputStream out = FSUtils.create(fs, regionInfoFile, perms, null);
try {
out.write(content);
} finally {
out.close();
}
}
/**
* Inspect the log directory to recover any log file without
* an active region server.
*/
void splitLogAfterStartup() {
boolean retrySplitting = !conf.getBoolean("hbase.hlog.split.skip.errors",
HLog.SPLIT_SKIP_ERRORS_DEFAULT);
Path logsDirPath = new Path(this.rootdir, HConstants.HREGION_LOGDIR_NAME);
do {
if (master.isStopped()) {
LOG.warn("Master stopped while splitting logs");
break;
}
List<ServerName> serverNames = new ArrayList<ServerName>();
try {
if (!this.fs.exists(logsDirPath)) return;
FileStatus[] logFolders = FSUtils.listStatus(this.fs, logsDirPath, null);
// Get online servers after getting log folders to avoid log folder deletion of newly
// checked in region servers . see HBASE-5916
Set<ServerName> onlineServers = ((HMaster) master).getServerManager().getOnlineServers()
.keySet();
if (logFolders == null || logFolders.length == 0) {
LOG.debug("No log files to split, proceeding...");
return;
}
for (FileStatus status : logFolders) {
String sn = status.getPath().getName();
// truncate splitting suffix if present (for ServerName parsing)
if (sn.endsWith(HLog.SPLITTING_EXT)) {
sn = sn.substring(0, sn.length() - HLog.SPLITTING_EXT.length());
}
ServerName serverName = ServerName.parseServerName(sn);
if (!onlineServers.contains(serverName)) {
LOG.info("Log folder " + status.getPath() + " doesn't belong "
+ "to a known region server, splitting");
serverNames.add(serverName);
} else {
LOG.info("Log folder " + status.getPath()
+ " belongs to an existing region server");
}
}
splitLog(serverNames);
retrySplitting = false;
} catch (IOException ioe) {
LOG.warn("Failed splitting of " + serverNames, ioe);
if (!checkFileSystem()) {
LOG.warn("Bad Filesystem, exiting");
Runtime.getRuntime().halt(1);
}
try {
if (retrySplitting) {
Thread.sleep(conf.getInt(
"hbase.hlog.split.failure.retry.interval", 30 * 1000));
}
} catch (InterruptedException e) {
LOG.warn("Interrupted, aborting since cannot return w/o splitting");
Thread.currentThread().interrupt();
retrySplitting = false;
Runtime.getRuntime().halt(1);
}
}
} while (retrySplitting);
}
@VisibleForTesting
void assertReferenceFileCount(int expectedReferenceFileCount, Path dir) throws IOException {
if (expectedReferenceFileCount != 0
&& expectedReferenceFileCount
!= FSUtils.getRegionReferenceFileCount(parent.getFilesystem(), dir)) {
throw new IOException("Failing split. Expected reference file count isn't equal.");
}
}
/** Returns the Hdfs size of the given region in bytes. */
public long getHdfsSize(HRegionInfo info) throws IOException {
Path tableDir =
HTableDescriptor.getTableDir(
FSUtils.getRootDir(hbaseConf_), Bytes.toBytes(hbaseTableName_));
FileSystem fs = tableDir.getFileSystem(hbaseConf_);
Path regionDir = tableDir.suffix("/" + info.getEncodedName());
return fs.getContentSummary(regionDir).getLength();
}
/**
* Update table descriptor
*
* @param fs
* @param conf
* @param hTableDescriptor
* @return New tableinfo or null if we failed update.
* @throws IOException Thrown if failed update.
*/
static Path updateHTableDescriptor(FileSystem fs, Path rootdir, HTableDescriptor hTableDescriptor)
throws IOException {
Path tableDir = FSUtils.getTablePath(rootdir, hTableDescriptor.getName());
Path p = writeTableDescriptor(fs, hTableDescriptor, tableDir, getTableInfoPath(fs, tableDir));
if (p == null) throw new IOException("Failed update");
LOG.info("Updated tableinfo=" + p);
return p;
}
static TableDescriptorModtime getTableDescriptorModtime(
FileSystem fs, Path hbaseRootDir, String tableName) throws NullPointerException, IOException {
// ignore both -ROOT- and .META. tables
if (Bytes.compareTo(Bytes.toBytes(tableName), HConstants.ROOT_TABLE_NAME) == 0
|| Bytes.compareTo(Bytes.toBytes(tableName), HConstants.META_TABLE_NAME) == 0) {
return null;
}
return getTableDescriptorModtime(fs, FSUtils.getTablePath(hbaseRootDir, tableName));
}
private Map<String, Integer> getFragmentationInfo(HMaster master, Configuration conf)
throws IOException {
boolean showFragmentation = conf.getBoolean("hbase.master.ui.fragmentation.enabled", false);
if (showFragmentation) {
return FSUtils.getTableFragmentation(master);
} else {
return null;
}
}
/** Take a snapshot of the specified disabled region */
protected void snapshotDisabledRegion(final HRegionInfo regionInfo) throws IOException {
snapshotManifest.addRegion(FSUtils.getTableDir(rootDir, snapshotTable), regionInfo);
monitor.rethrowException();
status.setStatus(
"Completed referencing HFiles for offline region "
+ regionInfo.toString()
+ " of table: "
+ snapshotTable);
}
private List<StoreFileInfo> getStoreFiles(Path storeDir) throws IOException {
FileStatus[] stats = FSUtils.listStatus(fs, storeDir);
if (stats == null) return null;
ArrayList<StoreFileInfo> storeFiles = new ArrayList<StoreFileInfo>(stats.length);
for (int i = 0; i < stats.length; ++i) {
storeFiles.add(new StoreFileInfo(conf, fs, stats[i]));
}
return storeFiles;
}
/** Creates, flushes, and closes a new region. */
public static HRegion createHDFSRegionDir(
Configuration conf, HRegionInfo hri, HTableDescriptor htd) throws IOException {
// Create HRegion
Path root = FSUtils.getRootDir(conf);
HRegion region = HRegion.createHRegion(hri, root, conf, htd, null);
// Close the new region to flush to disk. Close log file too.
region.close();
return region;
}
@BeforeClass
public static void setUpBeforeClass() throws Exception {
CONF = TEST_UTIL.getConfiguration();
TEST_UTIL.startMiniDFSCluster(1);
CLUSTER = TEST_UTIL.getDFSCluster();
FS = CLUSTER.getFileSystem();
DIR = TEST_UTIL.getDataTestDirOnTestFS("TestDurability");
FSUtils.setRootDir(CONF, DIR);
}
/**
* @return the set of families present on disk
* @throws IOException
*/
public Collection<String> getFamilies() throws IOException {
FileStatus[] fds = FSUtils.listStatus(fs, getRegionDir(), new FSUtils.FamilyDirFilter(fs));
if (fds == null) return null;
ArrayList<String> families = new ArrayList<String>(fds.length);
for (FileStatus status : fds) {
families.add(status.getPath().getName());
}
return families;
}
/**
* Returns true if the specified family has reference files
*
* @param familyName Column Family Name
* @return true if family contains reference files
* @throws IOException
*/
public boolean hasReferences(final String familyName) throws IOException {
FileStatus[] files =
FSUtils.listStatus(
fs,
getStoreDir(familyName),
new PathFilter() {
public boolean accept(Path path) {
return StoreFileInfo.isReference(path);
}
});
return files != null && files.length > 0;
}
protected HRegionInfo createRegion(
Configuration conf, final Table htbl, byte[] startKey, byte[] endKey) throws IOException {
Table meta = TEST_UTIL.getConnection().getTable(TableName.META_TABLE_NAME);
HTableDescriptor htd = htbl.getTableDescriptor();
HRegionInfo hri = new HRegionInfo(htbl.getName(), startKey, endKey);
LOG.info("manually adding regioninfo and hdfs data: " + hri.toString());
Path rootDir = FSUtils.getRootDir(conf);
FileSystem fs = rootDir.getFileSystem(conf);
Path p = new Path(FSUtils.getTableDir(rootDir, htbl.getName()), hri.getEncodedName());
fs.mkdirs(p);
Path riPath = new Path(p, HRegionFileSystem.REGION_INFO_FILE);
FSDataOutputStream out = fs.create(riPath);
out.write(hri.toDelimitedByteArray());
out.close();
// add to meta.
MetaTableAccessor.addRegionToMeta(meta, hri);
meta.close();
return hri;
}
public void consolidate() throws IOException {
if (getSnapshotFormat(desc) == SnapshotManifestV1.DESCRIPTOR_VERSION) {
Path rootDir = FSUtils.getRootDir(conf);
LOG.info("Using old Snapshot Format");
// write a copy of descriptor to the snapshot directory
new FSTableDescriptors(conf, fs, rootDir)
.createTableDescriptorForTableDirectory(workingDir, new TableDescriptor(htd), false);
} else {
LOG.debug("Convert to Single Snapshot Manifest");
convertToV2SingleManifest();
}
}
/**
* Make sure the hbase temp directory exists and is empty.
* NOTE that this method is only executed once just after the master becomes the active one.
*/
private void checkTempDir(final Path tmpdir, final Configuration c, final FileSystem fs)
throws IOException {
// If the temp directory exists, clear the content (left over, from the previous run)
if (fs.exists(tmpdir)) {
// Archive table in temp, maybe left over from failed deletion,
// if not the cleaner will take care of them.
for (Path tabledir: FSUtils.getTableDirs(fs, tmpdir)) {
for (Path regiondir: FSUtils.getRegionDirs(fs, tabledir)) {
HFileArchiver.archiveRegion(fs, this.rootdir, tabledir, regiondir);
}
}
if (!fs.delete(tmpdir, true)) {
throw new IOException("Unable to clean the temp directory: " + tmpdir);
}
}
// Create the temp directory
if (!fs.mkdirs(tmpdir)) {
throw new IOException("HBase temp directory '" + tmpdir + "' creation failure.");
}
}
protected void deleteRegion(Configuration conf, final Table tbl, byte[] startKey, byte[] endKey)
throws IOException {
LOG.info("Before delete:");
HTableDescriptor htd = tbl.getTableDescriptor();
dumpMeta(htd);
List<HRegionLocation> regions;
try (RegionLocator rl = connection.getRegionLocator(tbl.getName())) {
regions = rl.getAllRegionLocations();
}
for (HRegionLocation e : regions) {
HRegionInfo hri = e.getRegionInfo();
ServerName hsa = e.getServerName();
if (Bytes.compareTo(hri.getStartKey(), startKey) == 0
&& Bytes.compareTo(hri.getEndKey(), endKey) == 0) {
LOG.info("RegionName: " + hri.getRegionNameAsString());
byte[] deleteRow = hri.getRegionName();
TEST_UTIL.getHBaseAdmin().unassign(deleteRow, true);
LOG.info("deleting hdfs data: " + hri.toString() + hsa.toString());
Path rootDir = FSUtils.getRootDir(conf);
FileSystem fs = rootDir.getFileSystem(conf);
Path p = new Path(FSUtils.getTableDir(rootDir, htd.getTableName()), hri.getEncodedName());
fs.delete(p, true);
try (Table meta = this.connection.getTable(TableName.META_TABLE_NAME)) {
Delete delete = new Delete(deleteRow);
meta.delete(delete);
}
}
LOG.info(hri.toString() + hsa.toString());
}
TEST_UTIL.getMetaTableRows(htd.getTableName());
LOG.info("After delete:");
dumpMeta(htd);
}
@Test
public void testReadingArchiveDirectoryFromFS() throws IOException {
FileSystem fs = FileSystem.get(UTIL.getConfiguration());
try {
new FSTableDescriptors(fs, FSUtils.getRootDir(UTIL.getConfiguration()))
.get(HConstants.HFILE_ARCHIVE_DIRECTORY);
fail("Shouldn't be able to read a table descriptor for the archive directory.");
} catch (IOException e) {
LOG.debug(
"Correctly got error when reading a table descriptor from the archive directory: "
+ e.getMessage());
}
}