Java FileSystem.closeAllForUGI方法代碼示例

import org.apache.hadoop.fs.FileSystem; //導入方法依賴的package包/類
@Test
public void testCloseAllForUGI() throws Exception {
  final Configuration conf = new Configuration();
  conf.set("fs.cachedfile.impl", FileSystem.getFileSystemClass("file", null).getName());
  UserGroupInformation ugiA = UserGroupInformation.createRemoteUser("foo");
  FileSystem fsA = ugiA.doAs(new PrivilegedExceptionAction<FileSystem>() {
    @Override
    public FileSystem run() throws Exception {
      return FileSystem.get(new URI("cachedfile://a"), conf);
    }
  });
  //Now we should get the cached filesystem
  FileSystem fsA1 = ugiA.doAs(new PrivilegedExceptionAction<FileSystem>() {
    @Override
    public FileSystem run() throws Exception {
      return FileSystem.get(new URI("cachedfile://a"), conf);
    }
  });
  assertSame(fsA, fsA1);
  
  FileSystem.closeAllForUGI(ugiA);
  
  //Now we should get a different (newly created) filesystem
  fsA1 = ugiA.doAs(new PrivilegedExceptionAction<FileSystem>() {
    @Override
    public FileSystem run() throws Exception {
      return FileSystem.get(new URI("cachedfile://a"), conf);
    }
  });
  assertNotSame(fsA, fsA1);
}
 

import org.apache.hadoop.fs.FileSystem; //導入方法依賴的package包/類
protected void closeFileSystems(UserGroupInformation ugi) {
  try {
    FileSystem.closeAllForUGI(ugi);
  } catch (IOException e) {
    LOG.warn("Failed to close filesystems: ", e);
  }
}
 

import org.apache.hadoop.fs.FileSystem; //導入方法依賴的package包/類
protected void closeFileSystems(final UserGroupInformation userUgi) {
  try {
    FileSystem.closeAllForUGI(userUgi);
  } catch (IOException e) {
    LOG.warn("Failed to close filesystems: ", e);
  }
}
 

import org.apache.hadoop.fs.FileSystem; //導入方法依賴的package包/類
@Test (timeout=60000)
public void testCloseWithFailingFlush() throws Exception {
  final Configuration conf = HBaseConfiguration.create(CONF);
  // Only retry once.
  conf.setInt("hbase.hstore.flush.retries.number", 1);
  final User user =
    User.createUserForTesting(conf, this.name.getMethodName(), new String[]{"foo"});
  // Inject our faulty LocalFileSystem
  conf.setClass("fs.file.impl", FaultyFileSystem.class, FileSystem.class);
  user.runAs(new PrivilegedExceptionAction<Object>() {
    @Override
    public Object run() throws Exception {
      // Make sure it worked (above is sensitive to caching details in hadoop core)
      FileSystem fs = FileSystem.get(conf);
      Assert.assertEquals(FaultyFileSystem.class, fs.getClass());
      FaultyFileSystem ffs = (FaultyFileSystem)fs;
      HRegion region = null;
      try {
        // Initialize region
        region = initHRegion(tableName, name.getMethodName(), conf, COLUMN_FAMILY_BYTES);
        long size = region.getMemstoreSize();
        Assert.assertEquals(0, size);
        // Put one item into memstore.  Measure the size of one item in memstore.
        Put p1 = new Put(row);
        p1.add(new KeyValue(row, COLUMN_FAMILY_BYTES, qual1, 1, (byte[])null));
        region.put(p1);
        // Manufacture an outstanding snapshot -- fake a failed flush by doing prepare step only.
        Store store = region.getStore(COLUMN_FAMILY_BYTES);
        StoreFlushContext storeFlushCtx = store.createFlushContext(12345);
        storeFlushCtx.prepare();
        // Now add two entries to the foreground memstore.
        Put p2 = new Put(row);
        p2.add(new KeyValue(row, COLUMN_FAMILY_BYTES, qual2, 2, (byte[])null));
        p2.add(new KeyValue(row, COLUMN_FAMILY_BYTES, qual3, 3, (byte[])null));
        region.put(p2);
        // Now try close on top of a failing flush.
        region.close();
        fail();
      } catch (IOException dse) {
        // Expected
        LOG.info("Expected DroppedSnapshotException");
      } finally {
        // Make it so all writes succeed from here on out so can close clean
        ffs.fault.set(false);
        region.getWAL().rollWriter(true);
        HRegion.closeHRegion(region);
      }
      return null;
    }
  });
  FileSystem.closeAllForUGI(user.getUGI());
}
 

import org.apache.hadoop.fs.FileSystem; //導入方法依賴的package包/類
@Test
public void testHandleErrorsInFlush() throws Exception {
  LOG.info("Setting up a faulty file system that cannot write");

  final Configuration conf = HBaseConfiguration.create();
  User user = User.createUserForTesting(conf,
      "testhandleerrorsinflush", new String[]{"foo"});
  // Inject our faulty LocalFileSystem
  conf.setClass("fs.file.impl", FaultyFileSystem.class,
      FileSystem.class);
  user.runAs(new PrivilegedExceptionAction<Object>() {
    @Override
    public Object run() throws Exception {
      // Make sure it worked (above is sensitive to caching details in hadoop core)
      FileSystem fs = FileSystem.get(conf);
      Assert.assertEquals(FaultyFileSystem.class, fs.getClass());

      // Initialize region
      init(name.getMethodName(), conf);

      LOG.info("Adding some data");
      store.add(new KeyValue(row, family, qf1, 1, (byte[])null));
      store.add(new KeyValue(row, family, qf2, 1, (byte[])null));
      store.add(new KeyValue(row, family, qf3, 1, (byte[])null));

      LOG.info("Before flush, we should have no files");

      Collection<StoreFileInfo> files =
        store.getRegionFileSystem().getStoreFiles(store.getColumnFamilyName());
      Assert.assertEquals(0, files != null ? files.size() : 0);

      //flush
      try {
        LOG.info("Flushing");
        flush(1);
        Assert.fail("Didn't bubble up IOE!");
      } catch (IOException ioe) {
        Assert.assertTrue(ioe.getMessage().contains("Fault injected"));
      }

      LOG.info("After failed flush, we should still have no files!");
      files = store.getRegionFileSystem().getStoreFiles(store.getColumnFamilyName());
      Assert.assertEquals(0, files != null ? files.size() : 0);
      store.getHRegion().getWAL().close();
      return null;
    }
  });
  FileSystem.closeAllForUGI(user.getUGI());
}