Java ZkCoordinatedStateManager.getCloseRegionCoordination方法代码示例

import org.apache.hadoop.hbase.coordination.ZkCoordinatedStateManager; //导入方法依赖的package包/类
/**
 * Test if close region can handle ZK closing node version mismatch
 * @throws IOException
 * @throws NodeExistsException
 * @throws KeeperException
* @throws DeserializationException
 */
@Test public void testZKClosingNodeVersionMismatch()
throws IOException, NodeExistsException, KeeperException, DeserializationException {
  final Server server = new MockServer(HTU);
  final RegionServerServices rss = HTU.createMockRegionServerService();

  HTableDescriptor htd = TEST_HTD;
  final HRegionInfo hri = TEST_HRI;

  ZkCoordinatedStateManager coordinationProvider = new ZkCoordinatedStateManager();
  coordinationProvider.initialize(server);
  coordinationProvider.start();

  // open a region first so that it can be closed later
  OpenRegion(server, rss, htd, hri, coordinationProvider.getOpenRegionCoordination());

  // close the region
  // Create it CLOSING, which is what Master set before sending CLOSE RPC
  int versionOfClosingNode = ZKAssign.createNodeClosing(server.getZooKeeper(),
    hri, server.getServerName());

  // The CloseRegionHandler will validate the expected version
  // Given it is set to invalid versionOfClosingNode+1,
  // CloseRegionHandler should be M_ZK_REGION_CLOSING

  ZkCloseRegionCoordination.ZkCloseRegionDetails zkCrd =
    new ZkCloseRegionCoordination.ZkCloseRegionDetails();
  zkCrd.setPublishStatusInZk(true);
  zkCrd.setExpectedVersion(versionOfClosingNode+1);

  CloseRegionHandler handler = new CloseRegionHandler(server, rss, hri, false,
    coordinationProvider.getCloseRegionCoordination(), zkCrd);
  handler.process();

  // Handler should remain in M_ZK_REGION_CLOSING
  RegionTransition rt =
    RegionTransition.parseFrom(ZKAssign.getData(server.getZooKeeper(), hri.getEncodedName()));
  assertTrue(rt.getEventType().equals(EventType.M_ZK_REGION_CLOSING ));
}
 

import org.apache.hadoop.hbase.coordination.ZkCoordinatedStateManager; //导入方法依赖的package包/类
/**
 * Test if the region can be closed properly
 * @throws IOException
 * @throws NodeExistsException
 * @throws KeeperException
* @throws org.apache.hadoop.hbase.exceptions.DeserializationException
 */
@Test public void testCloseRegion()
throws IOException, NodeExistsException, KeeperException, DeserializationException {
  final Server server = new MockServer(HTU);
  final RegionServerServices rss = HTU.createMockRegionServerService();

  HTableDescriptor htd = TEST_HTD;
  HRegionInfo hri = TEST_HRI;

  ZkCoordinatedStateManager coordinationProvider = new ZkCoordinatedStateManager();
  coordinationProvider.initialize(server);
  coordinationProvider.start();

  // open a region first so that it can be closed later
  OpenRegion(server, rss, htd, hri, coordinationProvider.getOpenRegionCoordination());

  // close the region
  // Create it CLOSING, which is what Master set before sending CLOSE RPC
  int versionOfClosingNode = ZKAssign.createNodeClosing(server.getZooKeeper(),
    hri, server.getServerName());

  // The CloseRegionHandler will validate the expected version
  // Given it is set to correct versionOfClosingNode,
  // CloseRegionHandlerit should be RS_ZK_REGION_CLOSED

  ZkCloseRegionCoordination.ZkCloseRegionDetails zkCrd =
    new ZkCloseRegionCoordination.ZkCloseRegionDetails();
  zkCrd.setPublishStatusInZk(true);
  zkCrd.setExpectedVersion(versionOfClosingNode);

  CloseRegionHandler handler = new CloseRegionHandler(server, rss, hri, false,
    coordinationProvider.getCloseRegionCoordination(), zkCrd);
  handler.process();
  // Handler should have transitioned it to RS_ZK_REGION_CLOSED
  RegionTransition rt = RegionTransition.parseFrom(
    ZKAssign.getData(server.getZooKeeper(), hri.getEncodedName()));
  assertTrue(rt.getEventType().equals(EventType.RS_ZK_REGION_CLOSED));
}
 

import org.apache.hadoop.hbase.coordination.ZkCoordinatedStateManager; //导入方法依赖的package包/类
/**
 * Test that if we fail a flush, abort gets set on close.
 * @see <a href="https://issues.apache.org/jira/browse/HBASE-4270">HBASE-4270</a>
 * @throws IOException
 * @throws NodeExistsException
 * @throws KeeperException
 */
@Test public void testFailedFlushAborts()
throws IOException, NodeExistsException, KeeperException {
  final Server server = new MockServer(HTU, false);
  final RegionServerServices rss = HTU.createMockRegionServerService();
  HTableDescriptor htd = TEST_HTD;
  final HRegionInfo hri =
    new HRegionInfo(htd.getTableName(), HConstants.EMPTY_END_ROW,
      HConstants.EMPTY_END_ROW);
  HRegion region = HTU.createLocalHRegion(hri,  htd);
  try {
    assertNotNull(region);
    // Spy on the region so can throw exception when close is called.
    HRegion spy = Mockito.spy(region);
    final boolean abort = false;
    Mockito.when(spy.close(abort)).
    thenThrow(new IOException("Mocked failed close!"));
    // The CloseRegionHandler will try to get an HRegion that corresponds
    // to the passed hri -- so insert the region into the online region Set.
    rss.addToOnlineRegions(spy);
    // Assert the Server is NOT stopped before we call close region.
    assertFalse(server.isStopped());

    ZkCoordinatedStateManager consensusProvider = new ZkCoordinatedStateManager();
    consensusProvider.initialize(server);
    consensusProvider.start();

    ZkCloseRegionCoordination.ZkCloseRegionDetails zkCrd =
      new ZkCloseRegionCoordination.ZkCloseRegionDetails();
    zkCrd.setPublishStatusInZk(false);
    zkCrd.setExpectedVersion(-1);

    CloseRegionHandler handler = new CloseRegionHandler(server, rss, hri, false,
          consensusProvider.getCloseRegionCoordination(), zkCrd);
    boolean throwable = false;
    try {
      handler.process();
    } catch (Throwable t) {
      throwable = true;
    } finally {
      assertTrue(throwable);
      // Abort calls stop so stopped flag should be set.
      assertTrue(server.isStopped());
    }
  } finally {
    HRegion.closeHRegion(region);
  }
}