Java HBaseAdmin.getTableRegions方法代碼示例

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
  HBaseAdmin admin = util.getHBaseAdmin();

  LOG.info("Performing action: Merge random adjacent regions of table " + tableName);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.size() < 2) {
    LOG.info("Table " + tableName + " doesn't have enough regions to merge");
    return;
  }

  int i = RandomUtils.nextInt(regions.size() - 1);
  HRegionInfo a = regions.get(i++);
  HRegionInfo b = regions.get(i);
  LOG.debug("Merging " + a.getRegionNameAsString() + " and " + b.getRegionNameAsString());
  try {
    admin.mergeRegions(a.getEncodedNameAsBytes(), b.getEncodedNameAsBytes(), false);
  } catch (Exception ex) {
    LOG.warn("Merge failed, might be caused by other chaos: " + ex.getMessage());
  }
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
  HBaseAdmin admin = util.getHBaseAdmin();

  LOG.info("Performing action: Flush random region of table " + tableName);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.isEmpty()) {
    LOG.info("Table " + tableName + " doesn't have regions to flush");
    return;
  }

  HRegionInfo region = PolicyBasedChaosMonkey.selectRandomItem(
    regions.toArray(new HRegionInfo[regions.size()]));
  LOG.debug("Flushing region " + region.getRegionNameAsString());
  try {
    admin.flush(region.getRegionName());
  } catch (Exception ex) {
    LOG.warn("Flush failed, might be caused by other chaos: " + ex.getMessage());
  }
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
  HBaseAdmin admin = util.getHBaseAdmin();

  LOG.info("Performing action: Split random region of table " + tableName);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.isEmpty()) {
    LOG.info("Table " + tableName + " doesn't have regions to split");
    return;
  }

  HRegionInfo region = PolicyBasedChaosMonkey.selectRandomItem(
      regions.toArray(new HRegionInfo[regions.size()]));
  LOG.debug("Splitting region " + region.getRegionNameAsString());
  try {
    admin.split(region.getRegionName());
  } catch (Exception ex) {
    LOG.warn("Split failed, might be caused by other chaos: " + ex.getMessage());
  }
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }

  HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
  HBaseAdmin admin = util.getHBaseAdmin();

  LOG.info("Performing action: Move random region of table " + tableName);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.isEmpty()) {
    LOG.info("Table " + tableName + " doesn't have regions to move");
    return;
  }

  HRegionInfo region = PolicyBasedChaosMonkey.selectRandomItem(
    regions.toArray(new HRegionInfo[regions.size()]));
  LOG.debug("Unassigning region " + region.getRegionNameAsString());
  admin.unassign(region.getRegionName(), false);
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  HBaseTestingUtility util = context.getHBaseIntegrationTestingUtility();
  HBaseAdmin admin = util.getHBaseAdmin();
  boolean major = RandomUtils.nextInt(100) < majorRatio;

  LOG.info("Performing action: Compact random region of table "
    + tableName + ", major=" + major);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.isEmpty()) {
    LOG.info("Table " + tableName + " doesn't have regions to compact");
    return;
  }

  HRegionInfo region = PolicyBasedChaosMonkey.selectRandomItem(
    regions.toArray(new HRegionInfo[regions.size()]));

  try {
    if (major) {
      LOG.debug("Major compacting region " + region.getRegionNameAsString());
      admin.majorCompact(region.getRegionName());
    } else {
      LOG.debug("Compacting region " + region.getRegionNameAsString());
      admin.compact(region.getRegionName());
    }
  } catch (Exception ex) {
    LOG.warn("Compaction failed, might be caused by other chaos: " + ex.getMessage());
  }
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Override
public void perform() throws Exception {
  if (sleepTime > 0) {
    Thread.sleep(sleepTime);
  }

  HBaseAdmin admin = this.context.getHBaseIntegrationTestingUtility().getHBaseAdmin();
  Collection<ServerName> serversList = admin.getClusterStatus().getServers();
  ServerName[] servers = serversList.toArray(new ServerName[serversList.size()]);

  LOG.info("Performing action: Move regions of table " + tableName);
  List<HRegionInfo> regions = admin.getTableRegions(tableNameBytes);
  if (regions == null || regions.isEmpty()) {
    LOG.info("Table " + tableName + " doesn't have regions to move");
    return;
  }

  Collections.shuffle(regions);

  long start = System.currentTimeMillis();
  for (HRegionInfo regionInfo:regions) {
    try {
      String destServerName =
        servers[RandomUtils.nextInt(servers.length)].getServerName();
      LOG.debug("Moving " + regionInfo.getRegionNameAsString() + " to " + destServerName);
      admin.move(regionInfo.getEncodedNameAsBytes(), Bytes.toBytes(destServerName));
    } catch (Exception ex) {
      LOG.warn("Move failed, might be caused by other chaos: " + ex.getMessage());
    }
    if (sleepTime > 0) {
      Thread.sleep(sleepTime);
    }

    // put a limit on max num regions. Otherwise, this won't finish
    // with a sleep time of 10sec, 100 regions will finish in 16min
    if (System.currentTimeMillis() - start > maxTime) {
      break;
    }
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
/**
 * Basic end-to-end test of simple-flush-based snapshots
 */
@Test
public void testFlushCreateListDestroy() throws Exception {
  LOG.debug("------- Starting Snapshot test -------------");
  HBaseAdmin admin = UTIL.getHBaseAdmin();
  // make sure we don't fail on listing snapshots
  SnapshotTestingUtils.assertNoSnapshots(admin);
  // load the table so we have some data
  UTIL.loadTable(new HTable(UTIL.getConfiguration(), TABLE_NAME), TEST_FAM);
  // and wait until everything stabilizes
  waitForTableToBeOnline(TABLE_NAME);

  String snapshotName = "flushSnapshotCreateListDestroy";
  // test creating the snapshot
  admin.snapshot(snapshotName, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);
  logFSTree(new Path(UTIL.getConfiguration().get(HConstants.HBASE_DIR)));

  // make sure we only have 1 matching snapshot
  List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
    snapshotName, STRING_TABLE_NAME);

  // check the directory structure
  FileSystem fs = UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getFileSystem();
  Path rootDir = UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getRootDir();
  Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshots.get(0), rootDir);
  assertTrue(fs.exists(snapshotDir));
  FSUtils.logFileSystemState(UTIL.getTestFileSystem(), snapshotDir, LOG);
  Path snapshotinfo = new Path(snapshotDir, SnapshotDescriptionUtils.SNAPSHOTINFO_FILE);
  assertTrue(fs.exists(snapshotinfo));

  // check the table info
  HTableDescriptor desc = FSTableDescriptors.getTableDescriptor(fs, rootDir, TABLE_NAME);
  HTableDescriptor snapshotDesc = FSTableDescriptors.getTableDescriptor(fs,
    SnapshotDescriptionUtils.getSnapshotsDir(rootDir), Bytes.toBytes(snapshotName));
  assertEquals(desc, snapshotDesc);

  // check the region snapshot for all the regions
  List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
  for (HRegionInfo info : regions) {
    String regionName = info.getEncodedName();
    Path regionDir = new Path(snapshotDir, regionName);
    HRegionInfo snapshotRegionInfo = HRegion.loadDotRegionInfoFileContent(fs, regionDir);
    assertEquals(info, snapshotRegionInfo);
    // check to make sure we have the family
    Path familyDir = new Path(regionDir, Bytes.toString(TEST_FAM));
    assertTrue(fs.exists(familyDir));
    // make sure we have some file references
    assertTrue(fs.listStatus(familyDir).length > 0);
  }

  // test that we can delete the snapshot
  admin.deleteSnapshot(snapshotName);
  FSUtils.logFileSystemState(UTIL.getTestFileSystem(),
    FSUtils.getRootDir(UTIL.getConfiguration()), LOG);

  // make sure we don't have any snapshots
  SnapshotTestingUtils.assertNoSnapshots(admin);
  LOG.debug("------- Flush-Snapshot Create List Destroy-------------");
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Test(timeout=60000)
public void testAssignmentListener() throws IOException, InterruptedException {
  AssignmentManager am = TEST_UTIL.getHBaseCluster().getMaster().getAssignmentManager();
  HBaseAdmin admin = TEST_UTIL.getHBaseAdmin();

  DummyAssignmentListener listener = new DummyAssignmentListener();
  am.registerListener(listener);
  try {
    final String TABLE_NAME_STR = "testtb";
    final TableName TABLE_NAME = TableName.valueOf(TABLE_NAME_STR);
    final byte[] FAMILY = Bytes.toBytes("cf");

    // Create a new table, with a single region
    LOG.info("Create Table");
    TEST_UTIL.createTable(TABLE_NAME, FAMILY);
    listener.awaitModifications(1);
    assertEquals(1, listener.getLoadCount());
    assertEquals(0, listener.getCloseCount());

    // Add some data
    HTable table = new HTable(TEST_UTIL.getConfiguration(), TABLE_NAME);
    try {
      for (int i = 0; i < 10; ++i) {
        byte[] key = Bytes.toBytes("row-" + i);
        Put put = new Put(key);
        put.add(FAMILY, null, key);
        table.put(put);
      }
    } finally {
      table.close();
    }

    // Split the table in two
    LOG.info("Split Table");
    listener.reset();
    admin.split(TABLE_NAME_STR, "row-3");
    listener.awaitModifications(3);
    assertEquals(2, listener.getLoadCount());     // daughters added
    assertEquals(1, listener.getCloseCount());    // parent removed

    // Wait for the Regions to be mergeable
    MiniHBaseCluster miniCluster = TEST_UTIL.getMiniHBaseCluster();
    int mergeable = 0;
    while (mergeable < 2) {
      Thread.sleep(100);
      admin.majorCompact(TABLE_NAME_STR);
      mergeable = 0;
      for (JVMClusterUtil.RegionServerThread regionThread: miniCluster.getRegionServerThreads()) {
        for (HRegion region: regionThread.getRegionServer().getOnlineRegions(TABLE_NAME)) {
          mergeable += region.isMergeable() ? 1 : 0;
        }
      }
    }

    // Merge the two regions
    LOG.info("Merge Regions");
    listener.reset();
    List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
    assertEquals(2, regions.size());
    admin.mergeRegions(regions.get(0).getEncodedNameAsBytes(),
      regions.get(1).getEncodedNameAsBytes(), true);
    listener.awaitModifications(3);
    assertEquals(1, admin.getTableRegions(TABLE_NAME).size());
    assertEquals(1, listener.getLoadCount());     // new merged region added
    assertEquals(2, listener.getCloseCount());    // daughters removed

    // Delete the table
    LOG.info("Drop Table");
    listener.reset();
    TEST_UTIL.deleteTable(TABLE_NAME);
    listener.awaitModifications(1);
    assertEquals(0, listener.getLoadCount());
    assertEquals(1, listener.getCloseCount());
  } finally {
    am.unregisterListener(listener);
  }
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Test (timeout=300000)
public void testSnapshotStateAfterMerge() throws Exception {
  int numRows = DEFAULT_NUM_ROWS;
  HBaseAdmin admin = UTIL.getHBaseAdmin();
  // make sure we don't fail on listing snapshots
  SnapshotTestingUtils.assertNoSnapshots(admin);
  // load the table so we have some data
  SnapshotTestingUtils.loadData(UTIL, TABLE_NAME, numRows, TEST_FAM);

  // Take a snapshot
  String snapshotBeforeMergeName = "snapshotBeforeMerge";
  admin.snapshot(snapshotBeforeMergeName, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);

  // Clone the table
  String cloneBeforeMergeName = "cloneBeforeMerge";
  admin.cloneSnapshot(snapshotBeforeMergeName, cloneBeforeMergeName);
  SnapshotTestingUtils.waitForTableToBeOnline(UTIL, TableName.valueOf(cloneBeforeMergeName));

  // Merge two regions
  List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
  Collections.sort(regions, new Comparator<HRegionInfo>() {
    public int compare(HRegionInfo r1, HRegionInfo r2) {
      return Bytes.compareTo(r1.getStartKey(), r2.getStartKey());
    }
  });

  int numRegions = admin.getTableRegions(TABLE_NAME).size();
  int numRegionsAfterMerge = numRegions - 2;
  admin.mergeRegions(regions.get(1).getEncodedNameAsBytes(),
      regions.get(2).getEncodedNameAsBytes(), true);
  admin.mergeRegions(regions.get(5).getEncodedNameAsBytes(),
      regions.get(6).getEncodedNameAsBytes(), true);

  // Verify that there's one region less
  waitRegionsAfterMerge(numRegionsAfterMerge);
  assertEquals(numRegionsAfterMerge, admin.getTableRegions(TABLE_NAME).size());

  // Clone the table
  String cloneAfterMergeName = "cloneAfterMerge";
  admin.cloneSnapshot(snapshotBeforeMergeName, cloneAfterMergeName);
  SnapshotTestingUtils.waitForTableToBeOnline(UTIL, TableName.valueOf(cloneAfterMergeName));

  SnapshotTestingUtils.verifyRowCount(UTIL, TABLE_NAME, numRows);
  SnapshotTestingUtils.verifyRowCount(UTIL, TableName.valueOf(cloneBeforeMergeName), numRows);
  SnapshotTestingUtils.verifyRowCount(UTIL, TableName.valueOf(cloneAfterMergeName), numRows);

  // test that we can delete the snapshot
  UTIL.deleteTable(cloneAfterMergeName);
  UTIL.deleteTable(cloneBeforeMergeName);
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
@Test (timeout=300000)
public void testTakeSnapshotAfterMerge() throws Exception {
  int numRows = DEFAULT_NUM_ROWS;
  HBaseAdmin admin = UTIL.getHBaseAdmin();
  // make sure we don't fail on listing snapshots
  SnapshotTestingUtils.assertNoSnapshots(admin);
  // load the table so we have some data
  SnapshotTestingUtils.loadData(UTIL, TABLE_NAME, numRows, TEST_FAM);

  // Merge two regions
  List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
  Collections.sort(regions, new Comparator<HRegionInfo>() {
    public int compare(HRegionInfo r1, HRegionInfo r2) {
      return Bytes.compareTo(r1.getStartKey(), r2.getStartKey());
    }
  });

  int numRegions = admin.getTableRegions(TABLE_NAME).size();
  int numRegionsAfterMerge = numRegions - 2;
  admin.mergeRegions(regions.get(1).getEncodedNameAsBytes(),
      regions.get(2).getEncodedNameAsBytes(), true);
  admin.mergeRegions(regions.get(5).getEncodedNameAsBytes(),
      regions.get(6).getEncodedNameAsBytes(), true);

  waitRegionsAfterMerge(numRegionsAfterMerge);
  assertEquals(numRegionsAfterMerge, admin.getTableRegions(TABLE_NAME).size());

  // Take a snapshot
  String snapshotName = "snapshotAfterMerge";
  SnapshotTestingUtils.snapshot(admin, snapshotName, STRING_TABLE_NAME,
    SnapshotDescription.Type.FLUSH, 3);

  // Clone the table
  String cloneName = "cloneMerge";
  admin.cloneSnapshot(snapshotName, cloneName);
  SnapshotTestingUtils.waitForTableToBeOnline(UTIL, TableName.valueOf(cloneName));

  SnapshotTestingUtils.verifyRowCount(UTIL, TABLE_NAME, numRows);
  SnapshotTestingUtils.verifyRowCount(UTIL, TableName.valueOf(cloneName), numRows);

  // test that we can delete the snapshot
  UTIL.deleteTable(cloneName);
}
 

import org.apache.hadoop.hbase.client.HBaseAdmin; //導入方法依賴的package包/類
/**
 * Basic end-to-end test of simple-flush-based snapshots
 */
@Test (timeout=300000)
public void testFlushCreateListDestroy() throws Exception {
  LOG.debug("------- Starting Snapshot test -------------");
  HBaseAdmin admin = UTIL.getHBaseAdmin();
  // make sure we don't fail on listing snapshots
  SnapshotTestingUtils.assertNoSnapshots(admin);
  // load the table so we have some data
  SnapshotTestingUtils.loadData(UTIL, TABLE_NAME, DEFAULT_NUM_ROWS, TEST_FAM);

  String snapshotName = "flushSnapshotCreateListDestroy";
  // test creating the snapshot
  admin.snapshot(snapshotName, STRING_TABLE_NAME, SnapshotDescription.Type.FLUSH);
  logFSTree(FSUtils.getRootDir(UTIL.getConfiguration()));

  // make sure we only have 1 matching snapshot
  List<SnapshotDescription> snapshots = SnapshotTestingUtils.assertOneSnapshotThatMatches(admin,
    snapshotName, TABLE_NAME);

  // check the directory structure
  FileSystem fs = UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getFileSystem();
  Path rootDir = UTIL.getHBaseCluster().getMaster().getMasterFileSystem().getRootDir();
  Path snapshotDir = SnapshotDescriptionUtils.getCompletedSnapshotDir(snapshots.get(0), rootDir);
  assertTrue(fs.exists(snapshotDir));
  FSUtils.logFileSystemState(UTIL.getTestFileSystem(), snapshotDir, LOG);
  Path snapshotinfo = new Path(snapshotDir, SnapshotDescriptionUtils.SNAPSHOTINFO_FILE);
  assertTrue(fs.exists(snapshotinfo));

  // check the table info
  HTableDescriptor desc = FSTableDescriptors.getTableDescriptorFromFs(fs,
      rootDir, TABLE_NAME);
  HTableDescriptor snapshotDesc = FSTableDescriptors.getTableDescriptorFromFs(fs,
      new Path(SnapshotDescriptionUtils.getSnapshotsDir(rootDir), snapshotName));
  assertEquals(desc, snapshotDesc);

  // check the region snapshot for all the regions
  List<HRegionInfo> regions = admin.getTableRegions(TABLE_NAME);
  assertTrue(regions.size() > 1);
  for (HRegionInfo info : regions) {
    String regionName = info.getEncodedName();
    Path regionDir = new Path(snapshotDir, regionName);
    HRegionInfo snapshotRegionInfo = HRegionFileSystem.loadRegionInfoFileContent(fs, regionDir);
    assertEquals(info, snapshotRegionInfo);
    // check to make sure we have the family
    Path familyDir = new Path(regionDir, Bytes.toString(TEST_FAM));
    assertTrue("Missing region " + Bytes.toString(snapshotRegionInfo.getStartKey()),
               fs.exists(familyDir));

    // make sure we have some file references
    assertTrue(fs.listStatus(familyDir).length > 0);
  }
}