org.apache.hadoop.hbase.client.Durability Java Examples

@Override
public void execute(Tuple tuple) {
    byte[] rowKey = this.mapper.rowKey(tuple);
    ColumnList cols = this.mapper.columns(tuple);
    List<Mutation> mutations = hBaseClient.constructMutationReq(rowKey, cols, writeToWAL? Durability.SYNC_WAL : Durability.SKIP_WAL);

    try {
        this.hBaseClient.batchMutate(mutations);
    } catch(Exception e){
        LOG.warn("Failing tuple. Error writing rowKey " + rowKey, e);
        this.collector.fail(tuple);
        return;
    }

    this.collector.ack(tuple);
}
 

/**
 * Add a Mutation such as a Put or Increment to the batch.  The Mutation is only queued for
 * later execution.
 *
 * @param rowKey     The row key of the Mutation.
 * @param cols       The columns affected by the Mutation.
 * @param durability The durability of the mutation.
 */
public void addMutation(byte[] rowKey, ColumnList cols, Durability durability) {

  if (cols.hasColumns()) {
    Put put = createPut(rowKey, cols, durability);
    mutations.add(put);
  }

  if (cols.hasCounters()) {
    Increment inc = createIncrement(rowKey, cols, durability);
    mutations.add(inc);
  }

  if (mutations.isEmpty()) {
    mutations.add(new Put(rowKey));
  }
}
 

/**
 * Creates a pre-split table for load testing. If the table already exists,
 * logs a warning and continues.
 * @return the number of regions the table was split into
 */
public static int createPreSplitLoadTestTable(Configuration conf,
    TableName tableName, byte[][] columnFamilies, Algorithm compression,
    DataBlockEncoding dataBlockEncoding, int numRegionsPerServer, int regionReplication,
    Durability durability)
        throws IOException {
  TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(tableName);
  tableDescriptor.setDurability(durability);
  tableDescriptor.setRegionReplication(regionReplication);
  ColumnFamilyDescriptor[] hcds = new ColumnFamilyDescriptor[columnFamilies.length];
  for (int i = 0; i < columnFamilies.length; i++) {
    ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor familyDescriptor =
      new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(columnFamilies[i]);
    familyDescriptor.setDataBlockEncoding(dataBlockEncoding);
    familyDescriptor.setCompressionType(compression);
    hcds[i] = familyDescriptor;
  }
  return createPreSplitLoadTestTable(conf, tableDescriptor, hcds, numRegionsPerServer);
}
 

@Override
public void postPut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit, Durability durability) throws IOException {
    String rowkey = Bytes.toString(put.getRow());//得到rowkey
    SolrInputDocument doc =new SolrInputDocument();//实例化索引Doc
    doc.addField(config.getString("solr_hbase_rowkey_name"),rowkey);//添加主键
    for(String cf:config.getString("hbase_column_family").split(",")) {//遍历所有的列簇
        List<Cell> cells = put.getFamilyCellMap().get(Bytes.toBytes(cf));
        if(cells==null||cells.isEmpty()) continue; // 跳过取值为空或null的数据
        for (Cell kv : cells ) {
            String name=Bytes.toString(CellUtil.cloneQualifier(kv));//获取列名
            String value=Bytes.toString(kv.getValueArray());//获取列值 or CellUtil.cloneValue(kv)
            doc.addField(name,value);//添加到索引doc里面
        }
    }
    //发送数据到本地缓存
    SolrIndexTools.addDoc(doc);
}
 

/**
 * Test when returnResults set to false in increment it should not return the result instead it
 * resturn null.
 */
@Test
public void testIncrementWithReturnResultsSetToFalse() throws Exception {
  byte[] row1 = Bytes.toBytes("row1");
  byte[] col1 = Bytes.toBytes("col1");

  // Setting up region
  WALFactory wals = new WALFactory(CONF,
      ServerName
          .valueOf("testIncrementWithReturnResultsSetToFalse", 16010, System.currentTimeMillis())
          .toString());
  HRegion region = createHRegion(wals, Durability.USE_DEFAULT);

  Increment inc1 = new Increment(row1);
  inc1.setReturnResults(false);
  inc1.addColumn(FAMILY, col1, 1);
  Result res = region.increment(inc1);
  assertTrue(res.isEmpty());
}
 

@Test
public void testPb() throws DeserializationException, IOException {
  HTableDescriptor htd = new HTableDescriptor(TableName.META_TABLE_NAME);
  final int v = 123;
  htd.setMaxFileSize(v);
  htd.setDurability(Durability.ASYNC_WAL);
  htd.setReadOnly(true);
  htd.setRegionReplication(2);
  byte [] bytes = htd.toByteArray();
  HTableDescriptor deserializedHtd = HTableDescriptor.parseFrom(bytes);
  assertEquals(htd, deserializedHtd);
  assertEquals(v, deserializedHtd.getMaxFileSize());
  assertTrue(deserializedHtd.isReadOnly());
  assertEquals(Durability.ASYNC_WAL, deserializedHtd.getDurability());
  assertEquals(2, deserializedHtd.getRegionReplication());
}
 

@Override
public void map(ImmutableBytesWritable key, Result result,
    Context context)
throws IOException {
  List<Long> tsList = new ArrayList<>();
  for (Cell kv : result.listCells()) {
    tsList.add(kv.getTimestamp());
  }

  List<Put> puts = new ArrayList<>();
  for (Long ts : tsList) {
    Put put = new Put(key.get());
    put.setDurability(Durability.SKIP_WAL);
    put.addColumn(FAMILY_NAME, COLUMN_NAME, ts, Bytes.toBytes(true));
    puts.add(put);
  }
  table.put(puts);
}
 

@Override
public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put m, WALEdit edit,
    Durability durability) throws IOException {
  byte[] attribute = m.getAttribute(NON_VISIBILITY);
  byte[] cf = null;
  List<Cell> updatedCells = new ArrayList<>();
  if (attribute != null) {
    for (List<? extends Cell> edits : m.getFamilyCellMap().values()) {
      for (Cell cell : edits) {
        KeyValue kv = KeyValueUtil.ensureKeyValue(cell);
        if (cf == null) {
          cf = CellUtil.cloneFamily(kv);
        }
        Tag tag = new ArrayBackedTag((byte) NON_VIS_TAG_TYPE, attribute);
        List<Tag> tagList = new ArrayList<>(PrivateCellUtil.getTags(cell).size() + 1);
        tagList.add(tag);
        tagList.addAll(PrivateCellUtil.getTags(cell));
        Cell newcell = PrivateCellUtil.createCell(kv, tagList);
        ((List<Cell>) updatedCells).add(newcell);
      }
    }
    m.getFamilyCellMap().remove(cf);
    // Update the family map
    m.getFamilyCellMap().put(cf, updatedCells);
  }
}
 

@Test
public void testTimeRangeMapRed()
    throws IOException, InterruptedException, ClassNotFoundException {
  final TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(TABLE_NAME);
  final ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor familyDescriptor =
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(FAMILY_NAME);
  familyDescriptor.setMaxVersions(Integer.MAX_VALUE);
  tableDescriptor.setColumnFamily(familyDescriptor);
  admin.createTable(tableDescriptor);
  List<Put> puts = new ArrayList<>();
  for (Map.Entry<Long, Boolean> entry : TIMESTAMP.entrySet()) {
    Put put = new Put(KEY);
    put.setDurability(Durability.SKIP_WAL);
    put.addColumn(FAMILY_NAME, COLUMN_NAME, entry.getKey(), Bytes.toBytes(false));
    puts.add(put);
  }
  Table table = UTIL.getConnection().getTable(tableDescriptor.getTableName());
  table.put(puts);
  runTestOnTable();
  verify(table);
  table.close();
}
 

/**
 * Creates a pre-split table for load testing. If the table already exists,
 * logs a warning and continues.
 * @return the number of regions the table was split into
 */
public static int createPreSplitLoadTestTable(Configuration conf,
    TableName tableName, byte[] columnFamily, Algorithm compression,
    DataBlockEncoding dataBlockEncoding, int numRegionsPerServer, int regionReplication,
    Durability durability)
        throws IOException {
  TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(tableName);
  tableDescriptor.setDurability(durability);
  tableDescriptor.setRegionReplication(regionReplication);
  ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor familyDescriptor =
    new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(columnFamily);
  familyDescriptor.setDataBlockEncoding(dataBlockEncoding);
  familyDescriptor.setCompressionType(compression);
  return createPreSplitLoadTestTable(conf, tableDescriptor, familyDescriptor,
    numRegionsPerServer);
}
 

public HRegion createLocalHRegionWithInMemoryFlags(TableName tableName, byte[] startKey,
  byte[] stopKey, boolean isReadOnly, Durability durability, WAL wal, boolean[] compactedMemStore,
  byte[]... families) throws IOException {
  TableDescriptorBuilder.ModifyableTableDescriptor tableDescriptor =
    new TableDescriptorBuilder.ModifyableTableDescriptor(tableName);
  tableDescriptor.setReadOnly(isReadOnly);
  int i = 0;
  for (byte[] family : families) {
    ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor familyDescriptor =
      new ColumnFamilyDescriptorBuilder.ModifyableColumnFamilyDescriptor(family);
    if (compactedMemStore != null && i < compactedMemStore.length) {
      familyDescriptor.setInMemoryCompaction(MemoryCompactionPolicy.BASIC);
    } else {
      familyDescriptor.setInMemoryCompaction(MemoryCompactionPolicy.NONE);

    }
    i++;
    // Set default to be three versions.
    familyDescriptor.setMaxVersions(Integer.MAX_VALUE);
    tableDescriptor.setColumnFamily(familyDescriptor);
  }
  tableDescriptor.setDurability(durability);
  RegionInfo info = RegionInfoBuilder.newBuilder(tableDescriptor.getTableName())
    .setStartKey(startKey).setEndKey(stopKey).build();
  return createLocalHRegion(info, tableDescriptor, wal);
}
 

private boolean setDurabilityForTable(String tableName, TableDescriptorBuilder tableDescriptorBuilder, TableDescriptor tableDescriptor) {
  String tableDurability = metricsConf.get("timeline.metrics." + tableName + ".durability", "");

  if (StringUtils.isEmpty(tableDurability) || tableDescriptor.getDurability().toString().equals(tableDurability)) {
    return false;
  }

  if (StringUtils.isNotEmpty(tableDurability)) {
    LOG.info("Setting WAL option " + tableDurability + " for table : " + tableName);
    boolean validDurability = true;
    if ("SKIP_WAL".equals(tableDurability)) {
      tableDescriptorBuilder.setDurability(Durability.SKIP_WAL);
    } else if ("SYNC_WAL".equals(tableDurability)) {
      tableDescriptorBuilder.setDurability(Durability.SYNC_WAL);
    } else if ("ASYNC_WAL".equals(tableDurability)) {
      tableDescriptorBuilder.setDurability(Durability.ASYNC_WAL);
    } else if ("FSYNC_WAL".equals(tableDurability)) {
      tableDescriptorBuilder.setDurability(Durability.FSYNC_WAL);
    } else {
      LOG.info("Unknown value for durability : " + tableDurability);
      validDurability = false;
    }
    return validDurability;
  }
  return false;
}
 

@Test public void testInterruptingRunningCompactions() throws Exception {
  // setup a compact/split thread on a mock server
  conf.set(CompactionThroughputControllerFactory.HBASE_THROUGHPUT_CONTROLLER_KEY,
      WaitThroughPutController.class.getName());
  HRegionServer mockServer = Mockito.mock(HRegionServer.class);
  Mockito.when(mockServer.getConfiguration()).thenReturn(r.getBaseConf());
  CompactSplit thread = new CompactSplit(mockServer);

  Mockito.when(mockServer.getCompactSplitThread()).thenReturn(thread);

  // setup a region/store with some files
  HStore store = r.getStore(COLUMN_FAMILY);
  int jmax = (int) Math.ceil(15.0 / compactionThreshold);
  byte[] pad = new byte[1000]; // 1 KB chunk
  for (int i = 0; i < compactionThreshold; i++) {
    Table loader = new RegionAsTable(r);
    Put p = new Put(Bytes.add(STARTROW, Bytes.toBytes(i)));
    p.setDurability(Durability.SKIP_WAL);
    for (int j = 0; j < jmax; j++) {
      p.addColumn(COLUMN_FAMILY, Bytes.toBytes(j), pad);
    }
    HTestConst.addContent(loader, Bytes.toString(COLUMN_FAMILY));
    loader.put(p);
    r.flush(true);
  }
  HStore s = r.getStore(COLUMN_FAMILY);
  int initialFiles = s.getStorefilesCount();

  thread.requestCompaction(r, store, "test custom comapction", PRIORITY_USER,
      CompactionLifeCycleTracker.DUMMY, null);

  Thread.sleep(3000);
  thread.switchCompaction(false);
  assertEquals(initialFiles, s.getStorefilesCount());
  //don't mess up future tests
  thread.switchCompaction(true);
}
 

@Override
public void preDelete(final ObserverContext<RegionCoprocessorEnvironment> c,
                      final Delete delete, final WALEdit edit,
                      final Durability durability) throws IOException {
  if (delete.getAttribute(TEST_ATTRIBUTE) == null) {
    throw new DoNotRetryIOException("Delete should preserve attributes");
  }
  if (delete.getDurability() != Durability.USE_DEFAULT) {
    throw new DoNotRetryIOException("Durability is not propagated correctly");
  }
}
 

@Override
public void postPut(final ObserverContext<RegionCoprocessorEnvironment> c,
    final Put put, final WALEdit edit,
    final Durability durability) throws IOException {
  Map<byte[], List<Cell>> familyMap  = put.getFamilyCellMap();
  RegionCoprocessorEnvironment e = c.getEnvironment();
  assertNotNull(e);
  assertNotNull(e.getRegion());
  assertNotNull(familyMap);
  List<Cell> cells = familyMap.get(TestRegionObserverInterface.A);
  if (e.getRegion().getTableDescriptor().getTableName().equals(
      TestRegionObserverInterface.TEST_TABLE)) {
    assertNotNull(cells);
    assertNotNull(cells.get(0));
    // KeyValue v1 expectation.  Cast for now until we go all Cell all the time. TODO
    Cell cell = cells.get(0);
    assertTrue(Bytes.equals(cell.getQualifierArray(), cell.getQualifierOffset(),
      cell.getQualifierLength(), TestRegionObserverInterface.A, 0,
      TestRegionObserverInterface.A.length));
    cells = familyMap.get(TestRegionObserverInterface.B);
    assertNotNull(cells);
    assertNotNull(cells.get(0));
    // KeyValue v1 expectation.  Cast for now until we go all Cell all the time. TODO
    cell = cells.get(0);
    assertTrue(Bytes.equals(cell.getQualifierArray(), cell.getQualifierOffset(),
      cell.getQualifierLength(), TestRegionObserverInterface.B, 0,
      TestRegionObserverInterface.B.length));
    cells = familyMap.get(TestRegionObserverInterface.C);
    assertNotNull(cells);
    assertNotNull(cells.get(0));
    // KeyValue v1 expectation.  Cast for now until we go all Cell all the time. TODO
    cell = cells.get(0);
    assertTrue(Bytes.equals(cell.getQualifierArray(), cell.getQualifierOffset(),
      cell.getQualifierLength(), TestRegionObserverInterface.C, 0,
      TestRegionObserverInterface.C.length));
  }
  ctPostPut.incrementAndGet();
}
 

@Override
public void postPut(final ObserverContext<RegionCoprocessorEnvironment> c, final Put put,
    final WALEdit edit, final Durability durability) throws IOException {
  HRegion region = (HRegion) c.getEnvironment().getRegion();
  super.postPut(c, put, edit, durability);

  if (Bytes.equals(put.getRow(), Bytes.toBytes("row2"))) {
    region.flush(false);
    Assert.assertTrue(region.getMemStoreDataSize() >= 0);
  }
}
 

@Override
public void prePut(ObserverContext<RegionCoprocessorEnvironment> e, Put put, WALEdit edit,
    Durability durability) throws IOException {
  Region region = e.getEnvironment().getRegion();
  if (!region.getRegionInfo().isMetaRegion()
      && !region.getRegionInfo().getTable().isSystemTable()) {
    // The put carries the TTL attribute
    if (put.getTTL() != Long.MAX_VALUE) {
      return;
    }
    throw new IOException("Operation does not have TTL set");
  }
}
 

@Override
public void postPut(final ObserverContext<RegionCoprocessorEnvironment> c,
    final Put put, final WALEdit edit,
    final Durability durability)
    throws IOException {
  id = System.currentTimeMillis();
  try {
    Thread.sleep(10);
  } catch (InterruptedException ex) {
  }
}
 

public static TAppend appendFromHBase(Append in) throws IOException {
  TAppend out = new TAppend();
  out.setRow(in.getRow());

  if (in.getDurability() != Durability.USE_DEFAULT) {
    out.setDurability(durabilityFromHBase(in.getDurability()));
  }
  for (Map.Entry<byte [], List<Cell>> entry : in.getFamilyCellMap().entrySet()) {
    byte[] family = entry.getKey();
    for (Cell cell : entry.getValue()) {
      TColumnValue columnValue = new TColumnValue();
      columnValue.setFamily(family)
          .setQualifier(CellUtil.cloneQualifier(cell))
          .setType(cell.getType().getCode())
          .setTimestamp(cell.getTimestamp())
          .setValue(CellUtil.cloneValue(cell));
      if (cell.getTagsLength() != 0) {
        columnValue.setTags(PrivateCellUtil.cloneTags(cell));
      }
      out.addToColumns(columnValue);
    }
  }
  for (Map.Entry<String, byte[]> attribute : in.getAttributesMap().entrySet()) {
    out.putToAttributes(ByteBuffer.wrap(Bytes.toBytes(attribute.getKey())),
        ByteBuffer.wrap(attribute.getValue()));
  }
  try {
    CellVisibility cellVisibility = in.getCellVisibility();
    if (cellVisibility != null) {
      TCellVisibility tCellVisibility = new TCellVisibility();
      tCellVisibility.setExpression(cellVisibility.getExpression());
      out.setCellVisibility(tCellVisibility);
    }
  } catch (DeserializationException e) {
    throw new RuntimeException(e);
  }
  out.setReturnResults(in.isReturnResults());
  return out;
}
 

@Override
public void prePut(final ObserverContext<RegionCoprocessorEnvironment> c,
    final Put put, final WALEdit edit, final Durability durability)
    throws IOException {
  User user = getActiveUser(c);
  checkForReservedTagPresence(user, put);

  // Require WRITE permission to the table, CF, or top visible value, if any.
  // NOTE: We don't need to check the permissions for any earlier Puts
  // because we treat the ACLs in each Put as timestamped like any other
  // HBase value. A new ACL in a new Put applies to that Put. It doesn't
  // change the ACL of any previous Put. This allows simple evolution of
  // security policy over time without requiring expensive updates.
  RegionCoprocessorEnvironment env = c.getEnvironment();
  Map<byte[],? extends Collection<Cell>> families = put.getFamilyCellMap();
  AuthResult authResult = permissionGranted(OpType.PUT,
      user, env, families, Action.WRITE);
  AccessChecker.logResult(authResult);
  if (!authResult.isAllowed()) {
    if (cellFeaturesEnabled && !compatibleEarlyTermination) {
      put.setAttribute(CHECK_COVERING_PERM, TRUE);
    } else if (authorizationEnabled) {
      throw new AccessDeniedException("Insufficient permissions " + authResult.toContextString());
    }
  }

  // Add cell ACLs from the operation to the cells themselves
  byte[] bytes = put.getAttribute(AccessControlConstants.OP_ATTRIBUTE_ACL);
  if (bytes != null) {
    if (cellFeaturesEnabled) {
      addCellPermissions(bytes, put.getFamilyCellMap());
    } else {
      throw new DoNotRetryIOException("Cell ACLs cannot be persisted");
    }
  }
}
 

@Override
public void postDelete(final ObserverContext<RegionCoprocessorEnvironment> c,
    final Delete delete, final WALEdit edit, final Durability durability)
    throws IOException {
  if (aclRegion) {
    updateACL(c.getEnvironment(), delete.getFamilyCellMap());
  }
}
 

public MutationReplay(ClientProtos.MutationProto.MutationType type, Mutation mutation,
    long nonceGroup, long nonce) {
  this.type = type;
  this.mutation = mutation;
  if (this.mutation.getDurability() != Durability.SKIP_WAL) {
    // using ASYNC_WAL for relay
    this.mutation.setDurability(Durability.ASYNC_WAL);
  }
  this.nonceGroup = nonceGroup;
  this.nonce = nonce;
}
 

private void assertDurability(Connection conn, Durability durability) throws SQLException {
    PhoenixConnection pconn = conn.unwrap(PhoenixConnection.class);
    Iterator<Pair<byte[], List<Mutation>>> it = pconn.getMutationState().toMutations();
    assertTrue(it.hasNext());
    while (it.hasNext()) {
        Pair<byte[], List<Mutation>> pair = it.next();
        assertFalse(pair.getSecond().isEmpty());
        for (Mutation m : pair.getSecond()) {
            assertEquals(durability, m.getDurability());
        }
    }
}
 

private void doPost(WALEdit edit, Mutation m, final Durability durability) throws IOException {
  try {
    doPostWithExceptions(edit, m, durability);
    return;
  } catch (Throwable e) {
    rethrowIndexingException(e);
  }
  throw new RuntimeException(
      "Somehow didn't complete the index update, but didn't return succesfully either!");
}
 

public void loadTable(final Table table, int numRows) throws IOException {
  List<Put> puts = new ArrayList<>(numRows);
  for (int i = 0; i < numRows; ++i) {
    byte[] row = Bytes.toBytes(String.format("%09d", i));
    Put put = new Put(row);
    put.setDurability(Durability.SKIP_WAL);
    put.addColumn(FAMILY_NAME, null, row);
    table.put(put);
  }
}
 

@Override
public void run() {
  for (int i = 0; i < numIncrements; i++) {
    try {
      Increment inc = new Increment(row);
      inc.addColumn(fam1, qual1, amount);
      inc.addColumn(fam1, qual2, amount*2);
      inc.addColumn(fam2, qual3, amount*3);
      inc.setDurability(Durability.ASYNC_WAL);
      Result result = region.increment(inc);
      if (result != null) {
        assertEquals(Bytes.toLong(result.getValue(fam1, qual1))*2,
          Bytes.toLong(result.getValue(fam1, qual2)));
        assertTrue(result.getValue(fam2, qual3) != null);
        assertEquals(Bytes.toLong(result.getValue(fam1, qual1))*3,
          Bytes.toLong(result.getValue(fam2, qual3)));
        assertEquals(Bytes.toLong(result.getValue(fam1, qual1))*2,
           Bytes.toLong(result.getValue(fam1, qual2)));
        long fam1Increment = Bytes.toLong(result.getValue(fam1, qual1))*3;
        long fam2Increment = Bytes.toLong(result.getValue(fam2, qual3));
        assertEquals("fam1=" + fam1Increment + ", fam2=" + fam2Increment,
          fam1Increment, fam2Increment);
      }
    } catch (IOException e) {
      e.printStackTrace();
    }
  }
}
 

@Override
public void preDelete(ObserverContext<RegionCoprocessorEnvironment> e, Delete delete, WALEdit edit,
                      Durability durability) throws IOException {
  // Translate deletes into our own delete tombstones
  // Since HBase deletes cannot be undone, we need to translate deletes into special puts, which allows
  // us to rollback the changes (by a real delete) if the transaction fails

  // Deletes that are part of a transaction rollback do not need special handling.
  // They will never be rolled back, so are performed as normal HBase deletes.
  if (isRollbackOperation(delete)) {
    return;
  }

  Transaction tx = getFromOperation(delete);
  ensureValidTxLifetime(e.getEnvironment(), delete, tx);

  // Other deletes are client-initiated and need to be translated into our own tombstones
  // TODO: this should delegate to the DeleteStrategy implementation.
  Put deleteMarkers = new Put(delete.getRow(), delete.getTimeStamp());
  for (byte[] family : delete.getFamilyCellMap().keySet()) {
    List<Cell> familyCells = delete.getFamilyCellMap().get(family);
    if (isFamilyDelete(familyCells)) {
      deleteMarkers.add(family, TxConstants.FAMILY_DELETE_QUALIFIER, familyCells.get(0).getTimestamp(),
                        HConstants.EMPTY_BYTE_ARRAY);
    } else {
      for (Cell cell : familyCells) {
        deleteMarkers.add(family, CellUtil.cloneQualifier(cell), cell.getTimestamp(),
                          HConstants.EMPTY_BYTE_ARRAY);
      }
    }
  }
  for (Map.Entry<String, byte[]> entry : delete.getAttributesMap().entrySet()) {
      deleteMarkers.setAttribute(entry.getKey(), entry.getValue());
  }
  e.getEnvironment().getRegion().put(deleteMarkers);
  // skip normal delete handling
  e.bypass();
}
 

@Override
public void prePut(ObserverContext<RegionCoprocessorEnvironment> c, Put put, WALEdit edit,
    Durability durability) throws IOException {
  if (FAIL && c.getEnvironment().getRegionInfo().isMetaRegion()) {
    throw new IOException("Inject error");
  }
}
 

@Override
public void postDelete(final ObserverContext<RegionCoprocessorEnvironment> c,
    final Delete delete, final WALEdit edit,
    final Durability durability) throws IOException {
  Map<byte[], List<Cell>> familyMap  = delete.getFamilyCellMap();
  RegionCoprocessorEnvironment e = c.getEnvironment();
  assertNotNull(e);
  assertNotNull(e.getRegion());
  assertNotNull(familyMap);
  ctBeforeDelete.set(0);
  ctPostDeleted.incrementAndGet();
}
 

@Override
public void prePut(final ObserverContext<RegionCoprocessorEnvironment> c,
                   final Put put, final WALEdit edit,
                   final Durability durability) throws IOException {
  if (put.getAttribute(TEST_ATTRIBUTE) == null) {
    throw new DoNotRetryIOException("Put should preserve attributes");
  }
  if (put.getDurability() != Durability.USE_DEFAULT) {
    throw new DoNotRetryIOException("Durability is not propagated correctly");
  }
}