com.sa.npopa.samples.hbase.rest.client.RemoteHTable.java Source code

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/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.sa.npopa.samples.hbase.rest.client;

import java.io.IOException;
import java.io.InterruptedIOException;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.CellUtil;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HTableDescriptor;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.classification.InterfaceAudience;
import org.apache.hadoop.hbase.classification.InterfaceStability;
import org.apache.hadoop.hbase.client.Append;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Durability;
import org.apache.hadoop.hbase.client.Get;
import org.apache.hadoop.hbase.client.Increment;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Row;
import org.apache.hadoop.hbase.client.RowMutations;
import org.apache.hadoop.hbase.client.Scan;
import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.client.coprocessor.Batch;
import org.apache.hadoop.hbase.client.coprocessor.Batch.Callback;
import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
import org.apache.hadoop.hbase.io.TimeRange;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
import org.apache.hadoop.hbase.rest.Constants;
import org.apache.hadoop.hbase.rest.model.CellModel;
import org.apache.hadoop.hbase.rest.model.CellSetModel;
import org.apache.hadoop.hbase.rest.model.RowModel;
import org.apache.hadoop.hbase.rest.model.ScannerModel;
import org.apache.hadoop.hbase.rest.model.TableSchemaModel;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.util.StringUtils;

import com.google.protobuf.Descriptors;
import com.google.protobuf.Message;
import com.google.protobuf.Service;
import com.google.protobuf.ServiceException;
import com.sa.npopa.samples.hbase.rest.client.Client;
import com.sa.npopa.samples.hbase.rest.client.RemoteHTable;
import com.sa.npopa.samples.hbase.rest.client.Response;

/**
 * HTable interface to remote tables accessed via REST gateway
 */
@InterfaceAudience.Public
@InterfaceStability.Stable
public class RemoteHTable implements Table {

    private static final Log LOG = LogFactory.getLog(RemoteHTable.class);

    final Client client;
    final Configuration conf;
    final byte[] name;
    final int maxRetries;
    final long sleepTime;

    @SuppressWarnings("rawtypes")
    protected String buildRowSpec(final byte[] row, final Map familyMap, final long startTime, final long endTime,
            final int maxVersions) {
        StringBuffer sb = new StringBuffer();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append('/');
        sb.append(Bytes.toStringBinary(row));
        Set families = familyMap.entrySet();
        if (families != null) {
            Iterator i = familyMap.entrySet().iterator();
            sb.append('/');
            while (i.hasNext()) {
                Map.Entry e = (Map.Entry) i.next();
                Collection quals = (Collection) e.getValue();
                if (quals == null || quals.isEmpty()) {
                    // this is an unqualified family. append the family name and NO ':'
                    sb.append(Bytes.toStringBinary((byte[]) e.getKey()));
                } else {
                    Iterator ii = quals.iterator();
                    while (ii.hasNext()) {
                        sb.append(Bytes.toStringBinary((byte[]) e.getKey()));
                        sb.append(':');
                        Object o = ii.next();
                        // Puts use byte[] but Deletes use KeyValue
                        if (o instanceof byte[]) {
                            sb.append(Bytes.toStringBinary((byte[]) o));
                        } else if (o instanceof KeyValue) {
                            sb.append(Bytes.toStringBinary(((KeyValue) o).getQualifier()));
                        } else {
                            throw new RuntimeException("object type not handled");
                        }
                        if (ii.hasNext()) {
                            sb.append(',');
                        }
                    }
                }
                if (i.hasNext()) {
                    sb.append(',');
                }
            }
        }
        if (startTime >= 0 && endTime != Long.MAX_VALUE) {
            sb.append('/');
            sb.append(startTime);
            if (startTime != endTime) {
                sb.append(',');
                sb.append(endTime);
            }
        } else if (endTime != Long.MAX_VALUE) {
            sb.append('/');
            sb.append(endTime);
        }
        if (maxVersions > 1) {
            sb.append("?v=");
            sb.append(maxVersions);
        }
        return sb.toString();
    }

    protected String buildMultiRowSpec(final byte[][] rows, int maxVersions) {
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append("/multiget/");
        if (rows == null || rows.length == 0) {
            return sb.toString();
        }
        sb.append("?");
        for (int i = 0; i < rows.length; i++) {
            byte[] rk = rows[i];
            if (i != 0) {
                sb.append('&');
            }
            sb.append("row=");
            sb.append(Bytes.toStringBinary(rk));
        }
        sb.append("&v=");
        sb.append(maxVersions);

        return sb.toString();
    }

    protected Result[] buildResultFromModel(final CellSetModel model) {
        List<Result> results = new ArrayList<Result>();
        for (RowModel row : model.getRows()) {
            List<Cell> kvs = new ArrayList<Cell>();
            for (CellModel cell : row.getCells()) {
                byte[][] split = KeyValue.parseColumn(cell.getColumn());
                byte[] column = split[0];
                byte[] qualifier = null;
                if (split.length == 1) {
                    qualifier = HConstants.EMPTY_BYTE_ARRAY;
                } else if (split.length == 2) {
                    qualifier = split[1];
                } else {
                    throw new IllegalArgumentException("Invalid familyAndQualifier provided.");
                }
                kvs.add(new KeyValue(row.getKey(), column, qualifier, cell.getTimestamp(), cell.getValue()));
            }
            results.add(Result.create(kvs));
        }
        return results.toArray(new Result[results.size()]);
    }

    protected CellSetModel buildModelFromPut(Put put) {
        RowModel row = new RowModel(put.getRow());
        long ts = put.getTimeStamp();
        for (List<Cell> cells : put.getFamilyCellMap().values()) {
            for (Cell cell : cells) {
                row.addCell(new CellModel(CellUtil.cloneFamily(cell), CellUtil.cloneQualifier(cell),
                        ts != HConstants.LATEST_TIMESTAMP ? ts : cell.getTimestamp(), CellUtil.cloneValue(cell)));
            }
        }
        CellSetModel model = new CellSetModel();
        model.addRow(row);
        return model;
    }

    /**
     * Constructor
     * @param client
     * @param name
     */
    public RemoteHTable(Client client, String name) {
        this(client, HBaseConfiguration.create(), Bytes.toBytes(name));
    }

    /**
     * Constructor
     * @param client
     * @param conf
     * @param name
     */
    public RemoteHTable(Client client, Configuration conf, String name) {
        this(client, conf, Bytes.toBytes(name));
    }

    /**
     * Constructor
     * @param client
     * @param conf
     * @param name
     */
    public RemoteHTable(Client client, Configuration conf, byte[] name) {
        this.client = client;
        this.conf = conf;
        this.name = name;
        this.maxRetries = conf.getInt("hbase.rest.client.max.retries", 10);
        this.sleepTime = conf.getLong("hbase.rest.client.sleep", 1000);
    }

    public byte[] getTableName() {
        return name.clone();
    }

    @Override
    public TableName getName() {
        return TableName.valueOf(name);
    }

    @Override
    public Configuration getConfiguration() {
        return conf;
    }

    @Override
    public HTableDescriptor getTableDescriptor() throws IOException {
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append('/');
        sb.append("schema");
        for (int i = 0; i < maxRetries; i++) {
            Response response = client.get(sb.toString(), Constants.MIMETYPE_PROTOBUF);
            int code = response.getCode();
            switch (code) {
            case 200:
                TableSchemaModel schema = new TableSchemaModel();
                schema.getObjectFromMessage(response.getBody());
                return schema.getTableDescriptor();
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("schema request returned " + code);
            }
        }
        throw new IOException("schema request timed out");
    }

    @Override
    public void close() throws IOException {
        client.shutdown();
    }

    @Override
    public Result get(Get get) throws IOException {
        TimeRange range = get.getTimeRange();
        String spec = buildRowSpec(get.getRow(), get.getFamilyMap(), range.getMin(), range.getMax(),
                get.getMaxVersions());
        if (get.getFilter() != null) {
            LOG.warn("filters not supported on gets");
        }
        Result[] results = getResults(spec);
        if (results.length > 0) {
            if (results.length > 1) {
                LOG.warn("too many results for get (" + results.length + ")");
            }
            return results[0];
        } else {
            return new Result();
        }
    }

    @Override
    public Result[] get(List<Get> gets) throws IOException {
        byte[][] rows = new byte[gets.size()][];
        int maxVersions = 1;
        int count = 0;

        for (Get g : gets) {

            if (count == 0) {
                maxVersions = g.getMaxVersions();
            } else if (g.getMaxVersions() != maxVersions) {
                LOG.warn("MaxVersions on Gets do not match, using the first in the list (" + maxVersions + ")");
            }

            if (g.getFilter() != null) {
                LOG.warn("filters not supported on gets");
            }

            rows[count] = g.getRow();
            count++;
        }

        String spec = buildMultiRowSpec(rows, maxVersions);

        return getResults(spec);
    }

    private Result[] getResults(String spec) throws IOException {
        for (int i = 0; i < maxRetries; i++) {
            Response response = client.get(spec, Constants.MIMETYPE_PROTOBUF);
            int code = response.getCode();
            switch (code) {
            case 200:
                CellSetModel model = new CellSetModel();
                model.getObjectFromMessage(response.getBody());
                Result[] results = buildResultFromModel(model);
                if (results.length > 0) {
                    return results;
                }
                // fall through
            case 404:
                return new Result[0];

            case 401:
                LOG.warn("Negotiate not supported!");
                break;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("get request returned " + code);
            }
        }
        throw new IOException("get request timed out");
    }

    @Override
    public boolean exists(Get get) throws IOException {
        LOG.warn("exists() is really get(), just use get()");
        Result result = get(get);
        return (result != null && !(result.isEmpty()));
    }

    /**
     * exists(List) is really a list of get() calls. Just use get().
     * @param gets list of Get to test for the existence
     */
    @Override
    public boolean[] existsAll(List<Get> gets) throws IOException {
        LOG.warn("exists(List<Get>) is really list of get() calls, just use get()");
        boolean[] results = new boolean[gets.size()];
        for (int i = 0; i < results.length; i++) {
            results[i] = exists(gets.get(i));
        }
        return results;
    }

    @Deprecated
    public Boolean[] exists(List<Get> gets) throws IOException {
        boolean[] results = existsAll(gets);
        Boolean[] objectResults = new Boolean[results.length];
        for (int i = 0; i < results.length; ++i) {
            objectResults[i] = results[i];
        }
        return objectResults;
    }

    @Override
    public void put(Put put) throws IOException {
        CellSetModel model = buildModelFromPut(put);
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append('/');
        sb.append(Bytes.toStringBinary(put.getRow()));
        for (int i = 0; i < maxRetries; i++) {
            Response response = client.put(sb.toString(), Constants.MIMETYPE_PROTOBUF,
                    model.createProtobufOutput());
            int code = response.getCode();
            switch (code) {
            case 200:
                return;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("put request failed with " + code);
            }
        }
        throw new IOException("put request timed out");
    }

    @Override
    public void put(List<Put> puts) throws IOException {
        // this is a trick: The gateway accepts multiple rows in a cell set and
        // ignores the row specification in the URI

        // separate puts by row
        TreeMap<byte[], List<Cell>> map = new TreeMap<byte[], List<Cell>>(Bytes.BYTES_COMPARATOR);
        for (Put put : puts) {
            byte[] row = put.getRow();
            List<Cell> cells = map.get(row);
            if (cells == null) {
                cells = new ArrayList<Cell>();
                map.put(row, cells);
            }
            for (List<Cell> l : put.getFamilyCellMap().values()) {
                cells.addAll(l);
            }
        }

        // build the cell set
        CellSetModel model = new CellSetModel();
        for (Map.Entry<byte[], List<Cell>> e : map.entrySet()) {
            RowModel row = new RowModel(e.getKey());
            for (Cell cell : e.getValue()) {
                row.addCell(new CellModel(cell));
            }
            model.addRow(row);
        }

        // build path for multiput
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append("/$multiput"); // can be any nonexistent row
        for (int i = 0; i < maxRetries; i++) {
            Response response = client.put(sb.toString(), Constants.MIMETYPE_PROTOBUF,
                    model.createProtobufOutput());
            int code = response.getCode();
            switch (code) {
            case 200:
                return;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("multiput request failed with " + code);
            }
        }
        throw new IOException("multiput request timed out");
    }

    @Override
    public void delete(Delete delete) throws IOException {
        String spec = buildRowSpec(delete.getRow(), delete.getFamilyCellMap(), delete.getTimeStamp(),
                delete.getTimeStamp(), 1);
        for (int i = 0; i < maxRetries; i++) {
            Response response = client.delete(spec);
            int code = response.getCode();
            switch (code) {
            case 200:
                return;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("delete request failed with " + code);
            }
        }
        throw new IOException("delete request timed out");
    }

    @Override
    public void delete(List<Delete> deletes) throws IOException {
        for (Delete delete : deletes) {
            delete(delete);
        }
    }

    public void flushCommits() throws IOException {
        // no-op
    }

    class Scanner implements ResultScanner {

        String uri;

        public Scanner(Scan scan) throws IOException {
            ScannerModel model;
            try {
                model = ScannerModel.fromScan(scan);
            } catch (Exception e) {
                throw new IOException(e);
            }
            StringBuffer sb = new StringBuffer();
            sb.append('/');
            sb.append(Bytes.toStringBinary(name));
            sb.append('/');
            sb.append("scanner");
            for (int i = 0; i < maxRetries; i++) {
                Response response = client.post(sb.toString(), Constants.MIMETYPE_PROTOBUF,
                        model.createProtobufOutput());
                int code = response.getCode();
                switch (code) {
                case 201:
                    uri = response.getLocation();
                    return;
                case 509:
                    try {
                        Thread.sleep(sleepTime);
                    } catch (InterruptedException e) {
                        throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                    }
                    break;
                default:
                    throw new IOException("scan request failed with " + code);
                }
            }
            throw new IOException("scan request timed out");
        }

        @Override
        public Result[] next(int nbRows) throws IOException {
            StringBuilder sb = new StringBuilder(uri);
            sb.append("?n=");
            sb.append(nbRows);
            for (int i = 0; i < maxRetries; i++) {
                Response response = client.get(sb.toString(), Constants.MIMETYPE_PROTOBUF);
                int code = response.getCode();
                switch (code) {
                case 200:
                    CellSetModel model = new CellSetModel();
                    model.getObjectFromMessage(response.getBody());
                    return buildResultFromModel(model);
                case 204:
                case 206:
                    return null;
                case 509:
                    try {
                        Thread.sleep(sleepTime);
                    } catch (InterruptedException e) {
                        throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                    }
                    break;
                default:
                    throw new IOException("scanner.next request failed with " + code);
                }
            }
            throw new IOException("scanner.next request timed out");
        }

        @Override
        public Result next() throws IOException {
            Result[] results = next(1);
            if (results == null || results.length < 1) {
                return null;
            }
            return results[0];
        }

        class Iter implements Iterator<Result> {

            Result cache;

            public Iter() {
                try {
                    cache = Scanner.this.next();
                } catch (IOException e) {
                    LOG.warn(StringUtils.stringifyException(e));
                }
            }

            @Override
            public boolean hasNext() {
                return cache != null;
            }

            @Override
            public Result next() {
                Result result = cache;
                try {
                    cache = Scanner.this.next();
                } catch (IOException e) {
                    LOG.warn(StringUtils.stringifyException(e));
                    cache = null;
                }
                return result;
            }

            @Override
            public void remove() {
                throw new RuntimeException("remove() not supported");
            }

        }

        @Override
        public Iterator<Result> iterator() {
            return new Iter();
        }

        @Override
        public void close() {
            try {
                client.delete(uri);
            } catch (IOException e) {
                LOG.warn(StringUtils.stringifyException(e));
            }
        }
    }

    @Override
    public ResultScanner getScanner(Scan scan) throws IOException {
        return new Scanner(scan);
    }

    @Override
    public ResultScanner getScanner(byte[] family) throws IOException {
        Scan scan = new Scan();
        scan.addFamily(family);
        return new Scanner(scan);
    }

    @Override
    public ResultScanner getScanner(byte[] family, byte[] qualifier) throws IOException {
        Scan scan = new Scan();
        scan.addColumn(family, qualifier);
        return new Scanner(scan);
    }

    public boolean isAutoFlush() {
        return true;
    }

    public Result getRowOrBefore(byte[] row, byte[] family) throws IOException {
        throw new IOException("getRowOrBefore not supported");
    }

    @Override
    public boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, byte[] value, Put put)
            throws IOException {
        // column to check-the-value
        put.add(new KeyValue(row, family, qualifier, value));

        CellSetModel model = buildModelFromPut(put);
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append('/');
        sb.append(Bytes.toStringBinary(put.getRow()));
        sb.append("?check=put");

        for (int i = 0; i < maxRetries; i++) {
            Response response = client.put(sb.toString(), Constants.MIMETYPE_PROTOBUF,
                    model.createProtobufOutput());
            int code = response.getCode();
            switch (code) {
            case 200:
                return true;
            case 304: // NOT-MODIFIED
                return false;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (final InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("checkAndPut request failed with " + code);
            }
        }
        throw new IOException("checkAndPut request timed out");
    }

    @Override
    public boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, CompareOp compareOp, byte[] value,
            Put put) throws IOException {
        throw new IOException("checkAndPut for non-equal comparison not implemented");
    }

    @Override
    public boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, byte[] value, Delete delete)
            throws IOException {
        Put put = new Put(row);
        // column to check-the-value
        put.add(new KeyValue(row, family, qualifier, value));
        CellSetModel model = buildModelFromPut(put);
        StringBuilder sb = new StringBuilder();
        sb.append('/');
        sb.append(Bytes.toStringBinary(name));
        sb.append('/');
        sb.append(Bytes.toStringBinary(row));
        sb.append("?check=delete");

        for (int i = 0; i < maxRetries; i++) {
            Response response = client.put(sb.toString(), Constants.MIMETYPE_PROTOBUF,
                    model.createProtobufOutput());
            int code = response.getCode();
            switch (code) {
            case 200:
                return true;
            case 304: // NOT-MODIFIED
                return false;
            case 509:
                try {
                    Thread.sleep(sleepTime);
                } catch (final InterruptedException e) {
                    throw (InterruptedIOException) new InterruptedIOException().initCause(e);
                }
                break;
            default:
                throw new IOException("checkAndDelete request failed with " + code);
            }
        }
        throw new IOException("checkAndDelete request timed out");
    }

    @Override
    public boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, CompareOp compareOp, byte[] value,
            Delete delete) throws IOException {
        throw new IOException("checkAndDelete for non-equal comparison not implemented");
    }

    @Override
    public Result increment(Increment increment) throws IOException {
        throw new IOException("Increment not supported");
    }

    @Override
    public Result append(Append append) throws IOException {
        throw new IOException("Append not supported");
    }

    @Override
    public long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, long amount) throws IOException {
        throw new IOException("incrementColumnValue not supported");
    }

    @Override
    public long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, long amount,
            Durability durability) throws IOException {
        throw new IOException("incrementColumnValue not supported");
    }

    @Override
    public void batch(List<? extends Row> actions, Object[] results) throws IOException {
        throw new IOException("batch not supported");
    }

    @Override
    public Object[] batch(List<? extends Row> actions) throws IOException {
        throw new IOException("batch not supported");
    }

    @Override
    public <R> void batchCallback(List<? extends Row> actions, Object[] results, Batch.Callback<R> callback)
            throws IOException, InterruptedException {
        throw new IOException("batchCallback not supported");
    }

    @Override
    public <R> Object[] batchCallback(List<? extends Row> actions, Batch.Callback<R> callback)
            throws IOException, InterruptedException {
        throw new IOException("batchCallback not supported");
    }

    @Override
    public CoprocessorRpcChannel coprocessorService(byte[] row) {
        throw new UnsupportedOperationException("coprocessorService not implemented");
    }

    @Override
    public <T extends Service, R> Map<byte[], R> coprocessorService(Class<T> service, byte[] startKey,
            byte[] endKey, Batch.Call<T, R> callable) throws ServiceException, Throwable {
        throw new UnsupportedOperationException("coprocessorService not implemented");
    }

    @Override
    public <T extends Service, R> void coprocessorService(Class<T> service, byte[] startKey, byte[] endKey,
            Batch.Call<T, R> callable, Batch.Callback<R> callback) throws ServiceException, Throwable {
        throw new UnsupportedOperationException("coprocessorService not implemented");
    }

    @Override
    public void mutateRow(RowMutations rm) throws IOException {
        throw new IOException("atomicMutation not supported");
    }

    @Override
    public long getWriteBufferSize() {
        throw new UnsupportedOperationException("getWriteBufferSize not implemented");
    }

    @Override
    public void setWriteBufferSize(long writeBufferSize) throws IOException {
        throw new IOException("setWriteBufferSize not supported");
    }

    @Override
    public <R extends Message> Map<byte[], R> batchCoprocessorService(Descriptors.MethodDescriptor method,
            Message request, byte[] startKey, byte[] endKey, R responsePrototype)
            throws ServiceException, Throwable {
        throw new UnsupportedOperationException("batchCoprocessorService not implemented");
    }

    @Override
    public <R extends Message> void batchCoprocessorService(Descriptors.MethodDescriptor method, Message request,
            byte[] startKey, byte[] endKey, R responsePrototype, Callback<R> callback)
            throws ServiceException, Throwable {
        throw new UnsupportedOperationException("batchCoprocessorService not implemented");
    }

    @Override
    public boolean checkAndMutate(byte[] row, byte[] family, byte[] qualifier, CompareOp compareOp, byte[] value,
            RowMutations rm) throws IOException {
        throw new UnsupportedOperationException("checkAndMutate not implemented");
    }
}