diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java index 91702df4205..8a68c56ea68 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTable.java @@ -22,6 +22,7 @@ import java.io.Closeable; import java.io.IOException; import java.io.InterruptedIOException; import java.util.ArrayList; +import java.util.Arrays; import java.util.Collections; import java.util.LinkedList; import java.util.List; @@ -1379,9 +1380,9 @@ public class HTable implements HTableInterface, RegionLocator { * {@inheritDoc} */ @Override - public Boolean[] exists(final List gets) throws IOException { - if (gets.isEmpty()) return new Boolean[]{}; - if (gets.size() == 1) return new Boolean[]{exists(gets.get(0))}; + public boolean[] existsAll(final List gets) throws IOException { + if (gets.isEmpty()) return new boolean[]{}; + if (gets.size() == 1) return new boolean[]{exists(gets.get(0))}; for (Get g: gets){ g.setCheckExistenceOnly(true); @@ -1395,7 +1396,7 @@ public class HTable implements HTableInterface, RegionLocator { } // translate. - Boolean[] results = new Boolean[r1.length]; + boolean[] results = new boolean[r1.length]; int i = 0; for (Object o : r1) { // batch ensures if there is a failure we get an exception instead @@ -1405,6 +1406,20 @@ public class HTable implements HTableInterface, RegionLocator { return results; } + /** + * {@inheritDoc} + */ + @Override + @Deprecated + public Boolean[] exists(final List 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; + } + /** * {@inheritDoc} */ diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java index 46b13b12e47..34f90d521af 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTableInterface.java @@ -18,389 +18,28 @@ */ package org.apache.hadoop.hbase.client; -import com.google.protobuf.Descriptors; -import com.google.protobuf.Message; -import com.google.protobuf.Service; -import com.google.protobuf.ServiceException; - -import org.apache.hadoop.classification.InterfaceAudience; -import org.apache.hadoop.classification.InterfaceStability; -import org.apache.hadoop.conf.Configuration; -import org.apache.hadoop.hbase.TableName; -import org.apache.hadoop.hbase.HTableDescriptor; -import org.apache.hadoop.hbase.KeyValue; -import org.apache.hadoop.hbase.client.coprocessor.Batch; -import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp; -import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel; - -import java.io.Closeable; import java.io.IOException; import java.util.List; -import java.util.Map; /** * Used to communicate with a single HBase table. * Obtain an instance from an {@link HConnection}. * * @since 0.21.0 + * @deprecated use {@link org.apache.hadoop.hbase.client.Table} instead */ -@InterfaceAudience.Public -@InterfaceStability.Stable -public interface HTableInterface extends Closeable { +@Deprecated +public interface HTableInterface extends Table { /** * Gets the name of this table. * * @return the table name. + * @deprecated Use {@link #getName()} instead */ + @Deprecated byte[] getTableName(); - /** - * Gets the fully qualified table name instance of this table. - */ - TableName getName(); - - /** - * Returns the {@link Configuration} object used by this instance. - *

- * The reference returned is not a copy, so any change made to it will - * affect this instance. - */ - Configuration getConfiguration(); - - /** - * Gets the {@link HTableDescriptor table descriptor} for this table. - * @throws IOException if a remote or network exception occurs. - */ - HTableDescriptor getTableDescriptor() throws IOException; - - /** - * Test for the existence of columns in the table, as specified by the Get. - *

- * - * This will return true if the Get matches one or more keys, false if not. - *

- * - * This is a server-side call so it prevents any data from being transfered to - * the client. - * - * @param get the Get - * @return true if the specified Get matches one or more keys, false if not - * @throws IOException e - */ - boolean exists(Get get) throws IOException; - - /** - * Test for the existence of columns in the table, as specified by the Gets. - *

- * - * This will return an array of booleans. Each value will be true if the related Get matches - * one or more keys, false if not. - *

- * - * This is a server-side call so it prevents any data from being transfered to - * the client. - * - * @param gets the Gets - * @return Array of Boolean true if the specified Get matches one or more keys, false if not - * @throws IOException e - */ - Boolean[] exists(List gets) throws IOException; - - /** - * Method that does a batch call on Deletes, Gets, Puts, Increments and Appends. - * The ordering of execution of the actions is not defined. Meaning if you do a Put and a - * Get in the same {@link #batch} call, you will not necessarily be - * guaranteed that the Get returns what the Put had put. - * - * @param actions list of Get, Put, Delete, Increment, Append objects - * @param results Empty Object[], same size as actions. Provides access to partial - * results, in case an exception is thrown. A null in the result array means that - * the call for that action failed, even after retries - * @throws IOException - * @since 0.90.0 - */ - void batch(final List actions, final Object[] results) throws IOException, - InterruptedException; - - /** - * Same as {@link #batch(List, Object[])}, but returns an array of - * results instead of using a results parameter reference. - * - * @param actions list of Get, Put, Delete, Increment, Append objects - * @return the results from the actions. A null in the return array means that - * the call for that action failed, even after retries - * @throws IOException - * @since 0.90.0 - * @deprecated If any exception is thrown by one of the actions, there is no way to - * retrieve the partially executed results. Use {@link #batch(List, Object[])} instead. - */ - Object[] batch(final List actions) throws IOException, InterruptedException; - - /** - * Same as {@link #batch(List, Object[])}, but with a callback. - * @since 0.96.0 - */ - void batchCallback( - final List actions, final Object[] results, final Batch.Callback callback - ) - throws IOException, InterruptedException; - - - /** - * Same as {@link #batch(List)}, but with a callback. - * @since 0.96.0 - * @deprecated If any exception is thrown by one of the actions, there is no way to - * retrieve the partially executed results. Use - * {@link #batchCallback(List, Object[], org.apache.hadoop.hbase.client.coprocessor.Batch.Callback)} - * instead. - */ - Object[] batchCallback( - List actions, Batch.Callback callback - ) throws IOException, - InterruptedException; - - /** - * Extracts certain cells from a given row. - * @param get The object that specifies what data to fetch and from which row. - * @return The data coming from the specified row, if it exists. If the row - * specified doesn't exist, the {@link Result} instance returned won't - * contain any {@link KeyValue}, as indicated by {@link Result#isEmpty()}. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - Result get(Get get) throws IOException; - - /** - * Extracts certain cells from the given rows, in batch. - * - * @param gets The objects that specify what data to fetch and from which rows. - * - * @return The data coming from the specified rows, if it exists. If the row - * specified doesn't exist, the {@link Result} instance returned won't - * contain any {@link KeyValue}, as indicated by {@link Result#isEmpty()}. - * If there are any failures even after retries, there will be a null in - * the results array for those Gets, AND an exception will be thrown. - * @throws IOException if a remote or network exception occurs. - * - * @since 0.90.0 - */ - Result[] get(List gets) throws IOException; - - /** - * Return the row that matches row exactly, - * or the one that immediately precedes it. - * - * @param row A row key. - * @param family Column family to include in the {@link Result}. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - * - * @deprecated As of version 0.92 this method is deprecated without - * replacement. Since version 0.96+, you can use reversed scan. - * getRowOrBefore is used internally to find entries in hbase:meta and makes - * various assumptions about the table (which are true for hbase:meta but not - * in general) to be efficient. - */ - Result getRowOrBefore(byte[] row, byte[] family) throws IOException; - - /** - * Returns a scanner on the current table as specified by the {@link Scan} - * object. - * Note that the passed {@link Scan}'s start row and caching properties - * maybe changed. - * - * @param scan A configured {@link Scan} object. - * @return A scanner. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - ResultScanner getScanner(Scan scan) throws IOException; - - /** - * Gets a scanner on the current table for the given family. - * - * @param family The column family to scan. - * @return A scanner. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - ResultScanner getScanner(byte[] family) throws IOException; - - /** - * Gets a scanner on the current table for the given family and qualifier. - * - * @param family The column family to scan. - * @param qualifier The column qualifier to scan. - * @return A scanner. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - ResultScanner getScanner(byte[] family, byte[] qualifier) throws IOException; - - - /** - * Puts some data in the table. - *

- * If {@link #isAutoFlush isAutoFlush} is false, the update is buffered - * until the internal buffer is full. - * @param put The data to put. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - void put(Put put) throws IOException; - - /** - * Puts some data in the table, in batch. - *

- * If {@link #isAutoFlush isAutoFlush} is false, the update is buffered - * until the internal buffer is full. - *

- * This can be used for group commit, or for submitting user defined - * batches. The writeBuffer will be periodically inspected while the List - * is processed, so depending on the List size the writeBuffer may flush - * not at all, or more than once. - * @param puts The list of mutations to apply. The batch put is done by - * aggregating the iteration of the Puts over the write buffer - * at the client-side for a single RPC call. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - void put(List puts) throws IOException; - - /** - * Atomically checks if a row/family/qualifier value matches the expected - * value. If it does, it adds the put. If the passed value is null, the check - * is for the lack of column (ie: non-existance) - * - * @param row to check - * @param family column family to check - * @param qualifier column qualifier to check - * @param value the expected value - * @param put data to put if check succeeds - * @throws IOException e - * @return true if the new put was executed, false otherwise - */ - boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, - byte[] value, Put put) throws IOException; - - boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, - CompareOp compareOp, byte[] value, Put put) throws IOException; - /** - * Deletes the specified cells/row. - * - * @param delete The object that specifies what to delete. - * @throws IOException if a remote or network exception occurs. - * @since 0.20.0 - */ - void delete(Delete delete) throws IOException; - - /** - * Deletes the specified cells/rows in bulk. - * @param deletes List of things to delete. List gets modified by this - * method (in particular it gets re-ordered, so the order in which the elements - * are inserted in the list gives no guarantee as to the order in which the - * {@link Delete}s are executed). - * @throws IOException if a remote or network exception occurs. In that case - * the {@code deletes} argument will contain the {@link Delete} instances - * that have not be successfully applied. - * @since 0.20.1 - */ - void delete(List deletes) throws IOException; - - /** - * Atomically checks if a row/family/qualifier value matches the expected - * value. If it does, it adds the delete. If the passed value is null, the - * check is for the lack of column (ie: non-existance) - * - * @param row to check - * @param family column family to check - * @param qualifier column qualifier to check - * @param value the expected value - * @param delete data to delete if check succeeds - * @throws IOException e - * @return true if the new delete was executed, false otherwise - */ - boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, - byte[] value, Delete delete) throws IOException; - - boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, - CompareOp compareOp, byte[] value, Delete delete) throws IOException; - - /** - * Performs multiple mutations atomically on a single row. Currently - * {@link Put} and {@link Delete} are supported. - * - * @param rm object that specifies the set of mutations to perform atomically - * @throws IOException - */ - void mutateRow(final RowMutations rm) throws IOException; - - /** - * Appends values to one or more columns within a single row. - *

- * This operation does not appear atomic to readers. Appends are done - * under a single row lock, so write operations to a row are synchronized, but - * readers do not take row locks so get and scan operations can see this - * operation partially completed. - * - * @param append object that specifies the columns and amounts to be used - * for the increment operations - * @throws IOException e - * @return values of columns after the append operation (maybe null) - */ - Result append(final Append append) throws IOException; - - /** - * Increments one or more columns within a single row. - *

- * This operation does not appear atomic to readers. Increments are done - * under a single row lock, so write operations to a row are synchronized, but - * readers do not take row locks so get and scan operations can see this - * operation partially completed. - * - * @param increment object that specifies the columns and amounts to be used - * for the increment operations - * @throws IOException e - * @return values of columns after the increment - */ - Result increment(final Increment increment) throws IOException; - - /** - * See {@link #incrementColumnValue(byte[], byte[], byte[], long, Durability)} - *

- * The {@link Durability} is defaulted to {@link Durability#SYNC_WAL}. - * @param row The row that contains the cell to increment. - * @param family The column family of the cell to increment. - * @param qualifier The column qualifier of the cell to increment. - * @param amount The amount to increment the cell with (or decrement, if the - * amount is negative). - * @return The new value, post increment. - * @throws IOException if a remote or network exception occurs. - */ - long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, - long amount) throws IOException; - - /** - * Atomically increments a column value. If the column value already exists - * and is not a big-endian long, this could throw an exception. If the column - * value does not yet exist it is initialized to amount and - * written to the specified column. - * - *

Setting durability to {@link Durability#SKIP_WAL} means that in a fail - * scenario you will lose any increments that have not been flushed. - * @param row The row that contains the cell to increment. - * @param family The column family of the cell to increment. - * @param qualifier The column qualifier of the cell to increment. - * @param amount The amount to increment the cell with (or decrement, if the - * amount is negative). - * @param durability The persistence guarantee for this increment. - * @return The new value, post increment. - * @throws IOException if a remote or network exception occurs. - */ - long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, - long amount, Durability durability) throws IOException; - /** * @deprecated Use {@link #incrementColumnValue(byte[], byte[], byte[], long, Durability)} */ @@ -410,115 +49,11 @@ public interface HTableInterface extends Closeable { throws IOException; /** - * Tells whether or not 'auto-flush' is turned on. - * - * @return {@code true} if 'auto-flush' is enabled (default), meaning - * {@link Put} operations don't get buffered/delayed and are immediately - * executed. + * @deprecated Use {@link #existsAll(java.util.List)} instead. */ - boolean isAutoFlush(); + @Deprecated + Boolean[] exists(List gets) throws IOException; - /** - * Executes all the buffered {@link Put} operations. - *

- * This method gets called once automatically for every {@link Put} or batch - * of {@link Put}s (when put(List) is used) when - * {@link #isAutoFlush} is {@code true}. - * @throws IOException if a remote or network exception occurs. - */ - void flushCommits() throws IOException; - - /** - * Releases any resources held or pending changes in internal buffers. - * - * @throws IOException if a remote or network exception occurs. - */ - void close() throws IOException; - - /** - * Creates and returns a {@link com.google.protobuf.RpcChannel} instance connected to the - * table region containing the specified row. The row given does not actually have - * to exist. Whichever region would contain the row based on start and end keys will - * be used. Note that the {@code row} parameter is also not passed to the - * coprocessor handler registered for this protocol, unless the {@code row} - * is separately passed as an argument in the service request. The parameter - * here is only used to locate the region used to handle the call. - * - *

- * The obtained {@link com.google.protobuf.RpcChannel} instance can be used to access a published - * coprocessor {@link com.google.protobuf.Service} using standard protobuf service invocations: - *

- * - *
- * 
-   * CoprocessorRpcChannel channel = myTable.coprocessorService(rowkey);
-   * MyService.BlockingInterface service = MyService.newBlockingStub(channel);
-   * MyCallRequest request = MyCallRequest.newBuilder()
-   *     ...
-   *     .build();
-   * MyCallResponse response = service.myCall(null, request);
-   *
- * - * @param row The row key used to identify the remote region location - * @return A CoprocessorRpcChannel instance - */ - CoprocessorRpcChannel coprocessorService(byte[] row); - - /** - * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table - * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), - * and invokes the passed {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} - * method with each {@link Service} - * instance. - * - * @param service the protocol buffer {@code Service} implementation to call - * @param startKey start region selection with region containing this row. If {@code null}, the - * selection will start with the first table region. - * @param endKey select regions up to and including the region containing this row. - * If {@code null}, selection will continue through the last table region. - * @param callable this instance's - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} - * method will be invoked once per table region, using the {@link Service} - * instance connected to that region. - * @param the {@link Service} subclass to connect to - * @param Return type for the {@code callable} parameter's - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method - * @return a map of result values keyed by region name - */ - Map coprocessorService(final Class service, - byte[] startKey, byte[] endKey, final Batch.Call callable) - throws ServiceException, Throwable; - - /** - * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table - * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), - * and invokes the passed {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} - * method with each {@link Service} instance. - * - *

- * The given - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Callback#update(byte[], byte[], Object)} - * method will be called with the return value from each region's - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} invocation. - *

- * - * @param service the protocol buffer {@code Service} implementation to call - * @param startKey start region selection with region containing this row. If {@code null}, the - * selection will start with the first table region. - * @param endKey select regions up to and including the region containing this row. - * If {@code null}, selection will continue through the last table region. - * @param callable this instance's - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method - * will be invoked once per table region, using the {@link Service} instance - * connected to that region. - * @param callback - * @param the {@link Service} subclass to connect to - * @param Return type for the {@code callable} parameter's - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method - */ - void coprocessorService(final Class service, - byte[] startKey, byte[] endKey, final Batch.Call callable, - final Batch.Callback callback) throws ServiceException, Throwable; /** * See {@link #setAutoFlush(boolean, boolean)} @@ -572,89 +107,20 @@ public interface HTableInterface extends Closeable { void setAutoFlush(boolean autoFlush, boolean clearBufferOnFail); /** - * Set the autoFlush behavior, without changing the value of {@code clearBufferOnFail} - */ - void setAutoFlushTo(boolean autoFlush); - - /** - * Returns the maximum size in bytes of the write buffer for this HTable. - *

- * The default value comes from the configuration parameter - * {@code hbase.client.write.buffer}. - * @return The size of the write buffer in bytes. - */ - long getWriteBufferSize(); - - /** - * Sets the size of the buffer in bytes. - *

- * If the new size is less than the current amount of data in the - * write buffer, the buffer gets flushed. - * @param writeBufferSize The new write buffer size, in bytes. + * Return the row that matches row exactly, + * or the one that immediately precedes it. + * + * @param row A row key. + * @param family Column family to include in the {@link Result}. * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + * + * @deprecated As of version 0.92 this method is deprecated without + * replacement. Since version 0.96+, you can use reversed scan. + * getRowOrBefore is used internally to find entries in hbase:meta and makes + * various assumptions about the table (which are true for hbase:meta but not + * in general) to be efficient. */ - void setWriteBufferSize(long writeBufferSize) throws IOException; - - /** - * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table - * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), all - * the invocations to the same region server will be batched into one call. The coprocessor - * service is invoked according to the service instance, method name and parameters. - * - * @param methodDescriptor - * the descriptor for the protobuf service method to call. - * @param request - * the method call parameters - * @param startKey - * start region selection with region containing this row. If {@code null}, the - * selection will start with the first table region. - * @param endKey - * select regions up to and including the region containing this row. If {@code null}, - * selection will continue through the last table region. - * @param responsePrototype - * the proto type of the response of the method in Service. - * @param - * the response type for the coprocessor Service method - * @throws ServiceException - * @throws Throwable - * @return a map of result values keyed by region name - */ - Map batchCoprocessorService( - Descriptors.MethodDescriptor methodDescriptor, Message request, - byte[] startKey, byte[] endKey, R responsePrototype) throws ServiceException, Throwable; - - /** - * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table - * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), all - * the invocations to the same region server will be batched into one call. The coprocessor - * service is invoked according to the service instance, method name and parameters. - * - *

- * The given - * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Callback#update(byte[],byte[],Object)} - * method will be called with the return value from each region's invocation. - *

- * - * @param methodDescriptor - * the descriptor for the protobuf service method to call. - * @param request - * the method call parameters - * @param startKey - * start region selection with region containing this row. If {@code null}, the - * selection will start with the first table region. - * @param endKey - * select regions up to and including the region containing this row. If {@code null}, - * selection will continue through the last table region. - * @param responsePrototype - * the proto type of the response of the method in Service. - * @param callback - * callback to invoke with the response for each region - * @param - * the response type for the coprocessor Service method - * @throws ServiceException - * @throws Throwable - */ - void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor, - Message request, byte[] startKey, byte[] endKey, R responsePrototype, - Batch.Callback callback) throws ServiceException, Throwable; + @Deprecated + Result getRowOrBefore(byte[] row, byte[] family) throws IOException; } diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTablePool.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTablePool.java index b899c4879b0..34bae3d24d7 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTablePool.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/HTablePool.java @@ -368,6 +368,12 @@ public class HTablePool implements Closeable { return table.exists(get); } + @Override + public boolean[] existsAll(List gets) throws IOException { + checkState(); + return table.existsAll(gets); + } + @Override public Boolean[] exists(List gets) throws IOException { checkState(); diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java new file mode 100644 index 00000000000..d55cb16e7a0 --- /dev/null +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/client/Table.java @@ -0,0 +1,601 @@ +/** + * + * 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 org.apache.hadoop.hbase.client; + +import com.google.protobuf.Descriptors; +import com.google.protobuf.Message; +import com.google.protobuf.Service; +import com.google.protobuf.ServiceException; +import org.apache.hadoop.classification.InterfaceAudience; +import org.apache.hadoop.classification.InterfaceStability; +import org.apache.hadoop.conf.Configuration; +import org.apache.hadoop.hbase.HTableDescriptor; +import org.apache.hadoop.hbase.TableName; +import org.apache.hadoop.hbase.client.coprocessor.Batch; +import org.apache.hadoop.hbase.filter.CompareFilter; +import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel; + +import java.io.Closeable; +import java.io.IOException; +import java.util.List; +import java.util.Map; + +/** + * Used to communicate with a single HBase table. + * Obtain an instance from an {@link HConnection}. + * + * @since 0.99.0 + */ + +@InterfaceAudience.Public +@InterfaceStability.Stable +public interface Table extends Closeable { + /** + * Gets the fully qualified table name instance of this table. + */ + TableName getName(); + + /** + * Returns the {@link org.apache.hadoop.conf.Configuration} object used by this instance. + *

+ * The reference returned is not a copy, so any change made to it will + * affect this instance. + */ + Configuration getConfiguration(); + + /** + * Gets the {@link org.apache.hadoop.hbase.HTableDescriptor table descriptor} for this table. + * @throws java.io.IOException if a remote or network exception occurs. + */ + HTableDescriptor getTableDescriptor() throws IOException; + + /** + * Test for the existence of columns in the table, as specified by the Get. + *

+ * + * This will return true if the Get matches one or more keys, false if not. + *

+ * + * This is a server-side call so it prevents any data from being transfered to + * the client. + * + * @param get the Get + * @return true if the specified Get matches one or more keys, false if not + * @throws IOException e + */ + boolean exists(Get get) throws IOException; + + /** + * Test for the existence of columns in the table, as specified by the Gets. + *

+ * + * This will return an array of booleans. Each value will be true if the related Get matches + * one or more keys, false if not. + *

+ * + * This is a server-side call so it prevents any data from being transferred to + * the client. + * + * @param gets the Gets + * @return Array of boolean. True if the specified Get matches one or more keys, false if not. + * @throws IOException e + */ + boolean[] existsAll(List gets) throws IOException; + + /** + * Method that does a batch call on Deletes, Gets, Puts, Increments and Appends. + * The ordering of execution of the actions is not defined. Meaning if you do a Put and a + * Get in the same {@link #batch} call, you will not necessarily be + * guaranteed that the Get returns what the Put had put. + * + * @param actions list of Get, Put, Delete, Increment, Append objects + * @param results Empty Object[], same size as actions. Provides access to partial + * results, in case an exception is thrown. A null in the result array means that + * the call for that action failed, even after retries + * @throws IOException + * @since 0.90.0 + */ + void batch(final List actions, final Object[] results) throws IOException, + InterruptedException; + + /** + * Same as {@link #batch(List, Object[])}, but returns an array of + * results instead of using a results parameter reference. + * + * @param actions list of Get, Put, Delete, Increment, Append objects + * @return the results from the actions. A null in the return array means that + * the call for that action failed, even after retries + * @throws IOException + * @since 0.90.0 + * @deprecated If any exception is thrown by one of the actions, there is no way to + * retrieve the partially executed results. Use {@link #batch(List, Object[])} instead. + */ + @Deprecated + Object[] batch(final List actions) throws IOException, InterruptedException; + + /** + * Same as {@link #batch(List, Object[])}, but with a callback. + * @since 0.96.0 + */ + void batchCallback( + final List actions, final Object[] results, final Batch.Callback callback + ) + throws IOException, InterruptedException; + + /** + * Same as {@link #batch(List)}, but with a callback. + * + * @since 0.96.0 + * @deprecated If any exception is thrown by one of the actions, there is no way to retrieve the + * partially executed results. Use {@link #batchCallback(List, Object[], + * org.apache.hadoop.hbase.client.coprocessor.Batch.Callback)} instead. + */ + @Deprecated + Object[] batchCallback( + List actions, Batch.Callback callback + ) throws IOException, + InterruptedException; + + /** + * Extracts certain cells from a given row. + * @param get The object that specifies what data to fetch and from which row. + * @return The data coming from the specified row, if it exists. If the row + * specified doesn't exist, the {@link Result} instance returned won't + * contain any {@link org.apache.hadoop.hbase.KeyValue}, as indicated by {@link Result#isEmpty()}. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + Result get(Get get) throws IOException; + + /** + * Extracts certain cells from the given rows, in batch. + * + * @param gets The objects that specify what data to fetch and from which rows. + * @return The data coming from the specified rows, if it exists. If the row specified doesn't + * exist, the {@link Result} instance returned won't contain any {@link + * org.apache.hadoop.hbase.KeyValue}, as indicated by {@link Result#isEmpty()}. If there are any + * failures even after retries, there will be a null in the results array for those Gets, AND an + * exception will be thrown. + * @throws IOException if a remote or network exception occurs. + * @since 0.90.0 + */ + Result[] get(List gets) throws IOException; + + /** + * Returns a scanner on the current table as specified by the {@link Scan} + * object. + * Note that the passed {@link Scan}'s start row and caching properties + * maybe changed. + * + * @param scan A configured {@link Scan} object. + * @return A scanner. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + ResultScanner getScanner(Scan scan) throws IOException; + + /** + * Gets a scanner on the current table for the given family. + * + * @param family The column family to scan. + * @return A scanner. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + ResultScanner getScanner(byte[] family) throws IOException; + + /** + * Gets a scanner on the current table for the given family and qualifier. + * + * @param family The column family to scan. + * @param qualifier The column qualifier to scan. + * @return A scanner. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + ResultScanner getScanner(byte[] family, byte[] qualifier) throws IOException; + + + /** + * Puts some data in the table. + *

+ * If {@link #isAutoFlush isAutoFlush} is false, the update is buffered + * until the internal buffer is full. + * @param put The data to put. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + void put(Put put) throws IOException; + + /** + * Puts some data in the table, in batch. + *

+ * If {@link #isAutoFlush isAutoFlush} is false, the update is buffered + * until the internal buffer is full. + *

+ * This can be used for group commit, or for submitting user defined + * batches. The writeBuffer will be periodically inspected while the List + * is processed, so depending on the List size the writeBuffer may flush + * not at all, or more than once. + * @param puts The list of mutations to apply. The batch put is done by + * aggregating the iteration of the Puts over the write buffer + * at the client-side for a single RPC call. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + void put(List puts) throws IOException; + + /** + * Atomically checks if a row/family/qualifier value matches the expected + * value. If it does, it adds the put. If the passed value is null, the check + * is for the lack of column (ie: non-existance) + * + * @param row to check + * @param family column family to check + * @param qualifier column qualifier to check + * @param value the expected value + * @param put data to put if check succeeds + * @throws IOException e + * @return true if the new put was executed, false otherwise + */ + boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, + byte[] value, Put put) throws IOException; + + /** + * Atomically checks if a row/family/qualifier value matches the expected + * value. If it does, it adds the put. If the passed value is null, the check + * is for the lack of column (ie: non-existance) + * + * @param row to check + * @param family column family to check + * @param qualifier column qualifier to check + * @param compareOp comparison operator to use + * @param value the expected value + * @param put data to put if check succeeds + * @throws IOException e + * @return true if the new put was executed, false otherwise + */ + boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier, + CompareFilter.CompareOp compareOp, byte[] value, Put put) throws IOException; + + /** + * Deletes the specified cells/row. + * + * @param delete The object that specifies what to delete. + * @throws IOException if a remote or network exception occurs. + * @since 0.20.0 + */ + void delete(Delete delete) throws IOException; + + /** + * Deletes the specified cells/rows in bulk. + * @param deletes List of things to delete. List gets modified by this + * method (in particular it gets re-ordered, so the order in which the elements + * are inserted in the list gives no guarantee as to the order in which the + * {@link Delete}s are executed). + * @throws IOException if a remote or network exception occurs. In that case + * the {@code deletes} argument will contain the {@link Delete} instances + * that have not be successfully applied. + * @since 0.20.1 + */ + void delete(List deletes) throws IOException; + + /** + * Atomically checks if a row/family/qualifier value matches the expected + * value. If it does, it adds the delete. If the passed value is null, the + * check is for the lack of column (ie: non-existance) + * + * @param row to check + * @param family column family to check + * @param qualifier column qualifier to check + * @param value the expected value + * @param delete data to delete if check succeeds + * @throws IOException e + * @return true if the new delete was executed, false otherwise + */ + boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, + byte[] value, Delete delete) throws IOException; + + /** + * Atomically checks if a row/family/qualifier value matches the expected + * value. If it does, it adds the delete. If the passed value is null, the + * check is for the lack of column (ie: non-existance) + * + * @param row to check + * @param family column family to check + * @param qualifier column qualifier to check + * @param compareOp comparison operator to use + * @param value the expected value + * @param delete data to delete if check succeeds + * @throws IOException e + * @return true if the new delete was executed, false otherwise + */ + boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier, + CompareFilter.CompareOp compareOp, byte[] value, Delete delete) throws IOException; + + /** + * Performs multiple mutations atomically on a single row. Currently + * {@link Put} and {@link Delete} are supported. + * + * @param rm object that specifies the set of mutations to perform atomically + * @throws IOException + */ + void mutateRow(final RowMutations rm) throws IOException; + + /** + * Appends values to one or more columns within a single row. + *

+ * This operation does not appear atomic to readers. Appends are done + * under a single row lock, so write operations to a row are synchronized, but + * readers do not take row locks so get and scan operations can see this + * operation partially completed. + * + * @param append object that specifies the columns and amounts to be used + * for the increment operations + * @throws IOException e + * @return values of columns after the append operation (maybe null) + */ + Result append(final Append append) throws IOException; + + /** + * Increments one or more columns within a single row. + *

+ * This operation does not appear atomic to readers. Increments are done + * under a single row lock, so write operations to a row are synchronized, but + * readers do not take row locks so get and scan operations can see this + * operation partially completed. + * + * @param increment object that specifies the columns and amounts to be used + * for the increment operations + * @throws IOException e + * @return values of columns after the increment + */ + Result increment(final Increment increment) throws IOException; + + /** + * See {@link #incrementColumnValue(byte[], byte[], byte[], long, Durability)} + *

+ * The {@link Durability} is defaulted to {@link Durability#SYNC_WAL}. + * @param row The row that contains the cell to increment. + * @param family The column family of the cell to increment. + * @param qualifier The column qualifier of the cell to increment. + * @param amount The amount to increment the cell with (or decrement, if the + * amount is negative). + * @return The new value, post increment. + * @throws IOException if a remote or network exception occurs. + */ + long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, + long amount) throws IOException; + + /** + * Atomically increments a column value. If the column value already exists + * and is not a big-endian long, this could throw an exception. If the column + * value does not yet exist it is initialized to amount and + * written to the specified column. + * + *

Setting durability to {@link Durability#SKIP_WAL} means that in a fail + * scenario you will lose any increments that have not been flushed. + * @param row The row that contains the cell to increment. + * @param family The column family of the cell to increment. + * @param qualifier The column qualifier of the cell to increment. + * @param amount The amount to increment the cell with (or decrement, if the + * amount is negative). + * @param durability The persistence guarantee for this increment. + * @return The new value, post increment. + * @throws IOException if a remote or network exception occurs. + */ + long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier, + long amount, Durability durability) throws IOException; + + /** + * Releases any resources held or pending changes in internal buffers. + * + * @throws IOException if a remote or network exception occurs. + */ + @Override + void close() throws IOException; + + /** + * Creates and returns a {@link com.google.protobuf.RpcChannel} instance connected to the + * table region containing the specified row. The row given does not actually have + * to exist. Whichever region would contain the row based on start and end keys will + * be used. Note that the {@code row} parameter is also not passed to the + * coprocessor handler registered for this protocol, unless the {@code row} + * is separately passed as an argument in the service request. The parameter + * here is only used to locate the region used to handle the call. + * + *

+ * The obtained {@link com.google.protobuf.RpcChannel} instance can be used to access a published + * coprocessor {@link com.google.protobuf.Service} using standard protobuf service invocations: + *

+ * + *
+ * 
+   * CoprocessorRpcChannel channel = myTable.coprocessorService(rowkey);
+   * MyService.BlockingInterface service = MyService.newBlockingStub(channel);
+   * MyCallRequest request = MyCallRequest.newBuilder()
+   *     ...
+   *     .build();
+   * MyCallResponse response = service.myCall(null, request);
+   *
+ * + * @param row The row key used to identify the remote region location + * @return A CoprocessorRpcChannel instance + */ + CoprocessorRpcChannel coprocessorService(byte[] row); + + /** + * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table + * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), and + * invokes the passed {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method + * with each {@link com.google.protobuf.Service} instance. + * + * @param service the protocol buffer {@code Service} implementation to call + * @param startKey start region selection with region containing this row. If {@code null}, the + * selection will start with the first table region. + * @param endKey select regions up to and including the region containing this row. If {@code + * null}, selection will continue through the last table region. + * @param callable this instance's {@link org.apache.hadoop.hbase.client.coprocessor.Batch + * .Call#call} + * method will be invoked once per table region, using the {@link com.google.protobuf.Service} + * instance connected to that region. + * @param the {@link com.google.protobuf.Service} subclass to connect to + * @param Return type for the {@code callable} parameter's {@link + * org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method + * @return a map of result values keyed by region name + */ + Map coprocessorService(final Class service, + byte[] startKey, byte[] endKey, final Batch.Call callable) + throws ServiceException, Throwable; + + /** + * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table + * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), and + * invokes the passed {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method + * with each {@link Service} instance. + * + *

The given {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Callback#update(byte[], + * byte[], Object)} method will be called with the return value from each region's {@link + * org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} invocation.

+ * + * @param service the protocol buffer {@code Service} implementation to call + * @param startKey start region selection with region containing this row. If {@code null}, the + * selection will start with the first table region. + * @param endKey select regions up to and including the region containing this row. If {@code + * null}, selection will continue through the last table region. + * @param callable this instance's {@link org.apache.hadoop.hbase.client.coprocessor.Batch + * .Call#call} + * method will be invoked once per table region, using the {@link Service} instance connected to + * that region. + * @param callback + * @param the {@link Service} subclass to connect to + * @param Return type for the {@code callable} parameter's {@link + * org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method + */ + void coprocessorService(final Class service, + byte[] startKey, byte[] endKey, final Batch.Call callable, + final Batch.Callback callback) throws ServiceException, Throwable; + + /** + * Tells whether or not 'auto-flush' is turned on. + * + * @return {@code true} if 'auto-flush' is enabled (default), meaning + * {@link Put} operations don't get buffered/delayed and are immediately + * executed. + */ + boolean isAutoFlush(); + + /** + * Executes all the buffered {@link Put} operations. + *

+ * This method gets called once automatically for every {@link Put} or batch + * of {@link Put}s (when put(List) is used) when + * {@link #isAutoFlush} is {@code true}. + * @throws IOException if a remote or network exception occurs. + */ + void flushCommits() throws IOException; + + /** + * Set the autoFlush behavior, without changing the value of {@code clearBufferOnFail} + */ + void setAutoFlushTo(boolean autoFlush); + + /** + * Returns the maximum size in bytes of the write buffer for this HTable. + *

+ * The default value comes from the configuration parameter + * {@code hbase.client.write.buffer}. + * @return The size of the write buffer in bytes. + */ + long getWriteBufferSize(); + + /** + * Sets the size of the buffer in bytes. + *

+ * If the new size is less than the current amount of data in the + * write buffer, the buffer gets flushed. + * @param writeBufferSize The new write buffer size, in bytes. + * @throws IOException if a remote or network exception occurs. + */ + void setWriteBufferSize(long writeBufferSize) throws IOException; + + + /** + * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table + * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), all + * the invocations to the same region server will be batched into one call. The coprocessor + * service is invoked according to the service instance, method name and parameters. + * + * @param methodDescriptor + * the descriptor for the protobuf service method to call. + * @param request + * the method call parameters + * @param startKey + * start region selection with region containing this row. If {@code null}, the + * selection will start with the first table region. + * @param endKey + * select regions up to and including the region containing this row. If {@code null}, + * selection will continue through the last table region. + * @param responsePrototype + * the proto type of the response of the method in Service. + * @param + * the response type for the coprocessor Service method + * @throws ServiceException + * @throws Throwable + * @return a map of result values keyed by region name + */ + Map batchCoprocessorService( + Descriptors.MethodDescriptor methodDescriptor, Message request, + byte[] startKey, byte[] endKey, R responsePrototype) throws ServiceException, Throwable; + + /** + * Creates an instance of the given {@link com.google.protobuf.Service} subclass for each table + * region spanning the range from the {@code startKey} row to {@code endKey} row (inclusive), all + * the invocations to the same region server will be batched into one call. The coprocessor + * service is invoked according to the service instance, method name and parameters. + * + *

+ * The given + * {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Callback#update(byte[],byte[],Object)} + * method will be called with the return value from each region's invocation. + *

+ * + * @param methodDescriptor + * the descriptor for the protobuf service method to call. + * @param request + * the method call parameters + * @param startKey + * start region selection with region containing this row. If {@code null}, the + * selection will start with the first table region. + * @param endKey + * select regions up to and including the region containing this row. If {@code null}, + * selection will continue through the last table region. + * @param responsePrototype + * the proto type of the response of the method in Service. + * @param callback + * callback to invoke with the response for each region + * @param + * the response type for the coprocessor Service method + * @throws ServiceException + * @throws Throwable + */ + void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor, + Message request, byte[] startKey, byte[] endKey, R responsePrototype, + Batch.Callback callback) throws ServiceException, Throwable; +} diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/HTableWrapper.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/HTableWrapper.java index 057c493b513..fa28eac4258 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/client/HTableWrapper.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/client/HTableWrapper.java @@ -140,6 +140,11 @@ public class HTableWrapper implements HTableInterface { return table.exists(get); } + public boolean[] existsAll(List gets) throws IOException{ + return table.existsAll(gets); + } + + @Deprecated public Boolean[] exists(List gets) throws IOException{ return table.exists(gets); } diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java index 8fc618b99ca..cf1416ebdb5 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/rest/client/RemoteHTable.java @@ -371,15 +371,25 @@ public class RemoteHTable implements HTableInterface { * exists(List) is really a list of get() calls. Just use get(). * @param gets list of Get to test for the existence */ - public Boolean[] exists(List gets) throws IOException { + public boolean[] existsAll(List gets) throws IOException { LOG.warn("exists(List) is really list of get() calls, just use get()"); - Boolean[] results = new Boolean[gets.size()]; + 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 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; + } + public void put(Put put) throws IOException { CellSetModel model = buildModelFromPut(put); StringBuilder sb = new StringBuilder();