Java RegionCoprocessorHost.load方法代码示例

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
Region reopenRegion(final Region closedRegion, Class<?> ... implClasses)
    throws IOException {
  //HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  Region r = HRegion.openHRegion(closedRegion, null);

  // this following piece is a hack. currently a coprocessorHost
  // is secretly loaded at OpenRegionHandler. we don't really
  // start a region server here, so just manually create cphost
  // and set it to region.
  Configuration conf = TEST_UTIL.getConfiguration();
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  ((HRegion)r).setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
  }
  // we need to manually call pre- and postOpen here since the
  // above load() is not the real case for CP loading. A CP is
  // expected to be loaded by default from 1) configuration; or 2)
  // HTableDescriptor. If it's loaded after HRegion initialized,
  // the pre- and postOpen() won't be triggered automatically.
  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
Region initHRegion (TableName tableName, String callingMethod,
    Configuration conf, Class<?> [] implClasses, byte [][] families)
    throws IOException {
  HTableDescriptor htd = new HTableDescriptor(tableName);
  for(byte [] family : families) {
    htd.addFamily(new HColumnDescriptor(family));
  }
  HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  Path path = new Path(DIR + callingMethod);
  HRegion r = HRegion.createHRegion(info, path, conf, htd);

  // this following piece is a hack.
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  r.setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
    Coprocessor c = host.findCoprocessor(implClass.getName());
    assertNotNull(c);
  }

  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverScanTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  Region region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromScan.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);

  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverFlushTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  Region region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromFlush.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  // put a row and flush it to disk
  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);
  region.flush(true);
  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
HRegion reopenRegion(final HRegion closedRegion, Class<?> ... implClasses)
    throws IOException {
  //HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  HRegion r = new HRegion(closedRegion);
  r.initialize();

  // this following piece is a hack. currently a coprocessorHost
  // is secretly loaded at OpenRegionHandler. we don't really
  // start a region server here, so just manually create cphost
  // and set it to region.
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  r.setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
  }
  // we need to manually call pre- and postOpen here since the
  // above load() is not the real case for CP loading. A CP is
  // expected to be loaded by default from 1) configuration; or 2)
  // HTableDescriptor. If it's loaded after HRegion initialized,
  // the pre- and postOpen() won't be triggered automatically.
  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
HRegion initHRegion (byte [] tableName, String callingMethod,
    Configuration conf, Class<?> [] implClasses, byte [][] families)
    throws IOException {
  HTableDescriptor htd = new HTableDescriptor(tableName);
  for(byte [] family : families) {
    htd.addFamily(new HColumnDescriptor(family));
  }
  HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  Path path = new Path(DIR + callingMethod);
  HRegion r = HRegion.createHRegion(info, path, conf, htd);

  // this following piece is a hack.
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  r.setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
    Coprocessor c = host.findCoprocessor(implClass.getName());
    assertNotNull(c);
  }

  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverScanTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromScan.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);

  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.list());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverFlushTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromFlush.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  // put a row and flush it to disk
  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);
  region.flushcache();
  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.list());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
HRegion reopenRegion(final HRegion closedRegion, Class<?> ... implClasses)
    throws IOException {
  //HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  HRegion r = HRegion.openHRegion(closedRegion, null);

  // this following piece is a hack. currently a coprocessorHost
  // is secretly loaded at OpenRegionHandler. we don't really
  // start a region server here, so just manually create cphost
  // and set it to region.
  Configuration conf = TEST_UTIL.getConfiguration();
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  r.setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
  }
  // we need to manually call pre- and postOpen here since the
  // above load() is not the real case for CP loading. A CP is
  // expected to be loaded by default from 1) configuration; or 2)
  // HTableDescriptor. If it's loaded after HRegion initialized,
  // the pre- and postOpen() won't be triggered automatically.
  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
HRegion initHRegion (TableName tableName, String callingMethod,
    Configuration conf, Class<?> [] implClasses, byte [][] families)
    throws IOException {
  HTableDescriptor htd = new HTableDescriptor(tableName);
  for(byte [] family : families) {
    htd.addFamily(new HColumnDescriptor(family));
  }
  HRegionInfo info = new HRegionInfo(tableName, null, null, false);
  Path path = new Path(DIR + callingMethod);
  HRegion r = HRegion.createHRegion(info, path, conf, htd);

  // this following piece is a hack.
  RegionCoprocessorHost host = new RegionCoprocessorHost(r, null, conf);
  r.setCoprocessorHost(host);

  for (Class<?> implClass : implClasses) {
    host.load(implClass, Coprocessor.PRIORITY_USER, conf);
    Coprocessor c = host.findCoprocessor(implClass.getName());
    assertNotNull(c);
  }

  // Here we have to call pre and postOpen explicitly.
  host.preOpen();
  host.postOpen();
  return r;
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverScanTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromScan.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);

  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverFlushTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  Configuration conf = HBaseConfiguration.create();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromFlush.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  // put a row and flush it to disk
  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);
  region.flushcache();
  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverScanTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  // Use new HTU to not overlap with the DFS cluster started in #CompactionStacking
  Configuration conf = new HBaseTestingUtility().getConfiguration();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromScan.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  Put put = new Put(ROW);
  put.addColumn(A, A, A);
  region.put(put);

  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
  HBaseTestingUtility.closeRegionAndWAL(region);
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
@Test
public void testRegionObserverFlushTimeStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(getClass().getName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A };

  // Use new HTU to not overlap with the DFS cluster started in #CompactionStacking
  Configuration conf = new HBaseTestingUtility().getConfiguration();
  HRegion region = initHRegion(TABLE, getClass().getName(), conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(NoDataFromFlush.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(EmptyRegionObsever.class, Coprocessor.PRIORITY_USER, conf);

  // put a row and flush it to disk
  Put put = new Put(ROW);
  put.addColumn(A, A, A);
  region.put(put);
  region.flush(true);
  Get get = new Get(ROW);
  Result r = region.get(get);
  assertNull(
    "Got an unexpected number of rows - no data should be returned with the NoDataFromScan coprocessor. Found: "
        + r, r.listCells());
  HBaseTestingUtility.closeRegionAndWAL(region);
}
 

import org.apache.hadoop.hbase.regionserver.RegionCoprocessorHost; //导入方法依赖的package包/类
public void testRegionObserverStacking() throws Exception {
  byte[] ROW = Bytes.toBytes("testRow");
  byte[] TABLE = Bytes.toBytes(this.getClass().getSimpleName());
  byte[] A = Bytes.toBytes("A");
  byte[][] FAMILIES = new byte[][] { A } ;

  Configuration conf = HBaseConfiguration.create();
  HRegion region = initHRegion(TABLE, getClass().getName(),
    conf, FAMILIES);
  RegionCoprocessorHost h = region.getCoprocessorHost();
  h.load(ObserverA.class, Coprocessor.PRIORITY_HIGHEST, conf);
  h.load(ObserverB.class, Coprocessor.PRIORITY_USER, conf);
  h.load(ObserverC.class, Coprocessor.PRIORITY_LOWEST, conf);

  Put put = new Put(ROW);
  put.add(A, A, A);
  region.put(put);

  Coprocessor c = h.findCoprocessor(ObserverA.class.getName());
  long idA = ((ObserverA)c).id;
  c = h.findCoprocessor(ObserverB.class.getName());
  long idB = ((ObserverB)c).id;
  c = h.findCoprocessor(ObserverC.class.getName());
  long idC = ((ObserverC)c).id;

  assertTrue(idA < idB);
  assertTrue(idB < idC);
}