HBASE-11797 Create Table interface to replace HTableInterface (Carter)
This commit is contained in:
Enis Soztutar
parent
310ac4f71d
commit
211c1e8ad4
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@ -22,6 +22,7 @@ import java.io.Closeable;
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import java.io.IOException;
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import java.io.InterruptedIOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.LinkedList;
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import java.util.List;
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@ -1379,9 +1380,9 @@ public class HTable implements HTableInterface, RegionLocator {
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* {@inheritDoc}
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*/
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@Override
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public Boolean[] exists(final List<Get> gets) throws IOException {
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if (gets.isEmpty()) return new Boolean[]{};
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if (gets.size() == 1) return new Boolean[]{exists(gets.get(0))};
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public boolean[] existsAll(final List<Get> gets) throws IOException {
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if (gets.isEmpty()) return new boolean[]{};
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if (gets.size() == 1) return new boolean[]{exists(gets.get(0))};
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for (Get g: gets){
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g.setCheckExistenceOnly(true);
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@ -1395,7 +1396,7 @@ public class HTable implements HTableInterface, RegionLocator {
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}
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// translate.
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Boolean[] results = new Boolean[r1.length];
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boolean[] results = new boolean[r1.length];
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int i = 0;
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for (Object o : r1) {
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// batch ensures if there is a failure we get an exception instead
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@ -1405,6 +1406,20 @@ public class HTable implements HTableInterface, RegionLocator {
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return results;
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}
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/**
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* {@inheritDoc}
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*/
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@Override
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@Deprecated
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public Boolean[] exists(final List<Get> gets) throws IOException {
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boolean[] results = existsAll(gets);
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Boolean[] objectResults = new Boolean[results.length];
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for (int i = 0; i < results.length; ++i) {
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objectResults[i] = results[i];
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}
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return objectResults;
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}
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/**
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* {@inheritDoc}
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*/
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@ -18,389 +18,28 @@
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*/
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package org.apache.hadoop.hbase.client;
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import com.google.protobuf.Descriptors;
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import com.google.protobuf.Message;
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import com.google.protobuf.Service;
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import com.google.protobuf.ServiceException;
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import org.apache.hadoop.classification.InterfaceAudience;
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import org.apache.hadoop.classification.InterfaceStability;
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import org.apache.hadoop.conf.Configuration;
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import org.apache.hadoop.hbase.TableName;
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import org.apache.hadoop.hbase.HTableDescriptor;
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import org.apache.hadoop.hbase.KeyValue;
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import org.apache.hadoop.hbase.client.coprocessor.Batch;
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import org.apache.hadoop.hbase.filter.CompareFilter.CompareOp;
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import org.apache.hadoop.hbase.ipc.CoprocessorRpcChannel;
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import java.io.Closeable;
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import java.io.IOException;
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import java.util.List;
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import java.util.Map;
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/**
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* Used to communicate with a single HBase table.
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* Obtain an instance from an {@link HConnection}.
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*
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* @since 0.21.0
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* @deprecated use {@link org.apache.hadoop.hbase.client.Table} instead
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*/
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@InterfaceAudience.Public
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@InterfaceStability.Stable
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public interface HTableInterface extends Closeable {
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@Deprecated
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public interface HTableInterface extends Table {
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/**
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* Gets the name of this table.
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*
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* @return the table name.
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* @deprecated Use {@link #getName()} instead
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*/
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@Deprecated
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byte[] getTableName();
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/**
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* Gets the fully qualified table name instance of this table.
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*/
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TableName getName();
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/**
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* Returns the {@link Configuration} object used by this instance.
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* <p>
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* The reference returned is not a copy, so any change made to it will
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* affect this instance.
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*/
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Configuration getConfiguration();
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/**
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* Gets the {@link HTableDescriptor table descriptor} for this table.
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* @throws IOException if a remote or network exception occurs.
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*/
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HTableDescriptor getTableDescriptor() throws IOException;
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/**
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* Test for the existence of columns in the table, as specified by the Get.
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* <p>
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*
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* This will return true if the Get matches one or more keys, false if not.
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* <p>
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*
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* This is a server-side call so it prevents any data from being transfered to
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* the client.
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*
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* @param get the Get
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* @return true if the specified Get matches one or more keys, false if not
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* @throws IOException e
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*/
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boolean exists(Get get) throws IOException;
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/**
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* Test for the existence of columns in the table, as specified by the Gets.
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* <p>
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*
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* This will return an array of booleans. Each value will be true if the related Get matches
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* one or more keys, false if not.
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* <p>
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*
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* This is a server-side call so it prevents any data from being transfered to
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* the client.
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*
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* @param gets the Gets
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* @return Array of Boolean true if the specified Get matches one or more keys, false if not
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* @throws IOException e
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*/
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Boolean[] exists(List<Get> gets) throws IOException;
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/**
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* Method that does a batch call on Deletes, Gets, Puts, Increments and Appends.
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* The ordering of execution of the actions is not defined. Meaning if you do a Put and a
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* Get in the same {@link #batch} call, you will not necessarily be
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* guaranteed that the Get returns what the Put had put.
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*
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* @param actions list of Get, Put, Delete, Increment, Append objects
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* @param results Empty Object[], same size as actions. Provides access to partial
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* results, in case an exception is thrown. A null in the result array means that
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* the call for that action failed, even after retries
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* @throws IOException
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* @since 0.90.0
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*/
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void batch(final List<? extends Row> actions, final Object[] results) throws IOException,
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InterruptedException;
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/**
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* Same as {@link #batch(List, Object[])}, but returns an array of
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* results instead of using a results parameter reference.
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*
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* @param actions list of Get, Put, Delete, Increment, Append objects
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* @return the results from the actions. A null in the return array means that
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* the call for that action failed, even after retries
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* @throws IOException
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* @since 0.90.0
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* @deprecated If any exception is thrown by one of the actions, there is no way to
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* retrieve the partially executed results. Use {@link #batch(List, Object[])} instead.
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*/
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Object[] batch(final List<? extends Row> actions) throws IOException, InterruptedException;
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/**
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* Same as {@link #batch(List, Object[])}, but with a callback.
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* @since 0.96.0
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*/
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<R> void batchCallback(
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final List<? extends Row> actions, final Object[] results, final Batch.Callback<R> callback
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)
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throws IOException, InterruptedException;
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/**
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* Same as {@link #batch(List)}, but with a callback.
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* @since 0.96.0
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* @deprecated If any exception is thrown by one of the actions, there is no way to
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* retrieve the partially executed results. Use
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* {@link #batchCallback(List, Object[], org.apache.hadoop.hbase.client.coprocessor.Batch.Callback)}
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* instead.
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*/
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<R> Object[] batchCallback(
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List<? extends Row> actions, Batch.Callback<R> callback
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) throws IOException,
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InterruptedException;
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/**
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* Extracts certain cells from a given row.
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* @param get The object that specifies what data to fetch and from which row.
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* @return The data coming from the specified row, if it exists. If the row
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* specified doesn't exist, the {@link Result} instance returned won't
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* contain any {@link KeyValue}, as indicated by {@link Result#isEmpty()}.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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Result get(Get get) throws IOException;
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/**
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* Extracts certain cells from the given rows, in batch.
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*
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* @param gets The objects that specify what data to fetch and from which rows.
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*
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* @return The data coming from the specified rows, if it exists. If the row
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* specified doesn't exist, the {@link Result} instance returned won't
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* contain any {@link KeyValue}, as indicated by {@link Result#isEmpty()}.
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* If there are any failures even after retries, there will be a null in
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* the results array for those Gets, AND an exception will be thrown.
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* @throws IOException if a remote or network exception occurs.
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*
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* @since 0.90.0
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*/
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Result[] get(List<Get> gets) throws IOException;
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/**
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* Return the row that matches <i>row</i> exactly,
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* or the one that immediately precedes it.
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*
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* @param row A row key.
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* @param family Column family to include in the {@link Result}.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*
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* @deprecated As of version 0.92 this method is deprecated without
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* replacement. Since version 0.96+, you can use reversed scan.
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* getRowOrBefore is used internally to find entries in hbase:meta and makes
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* various assumptions about the table (which are true for hbase:meta but not
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* in general) to be efficient.
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*/
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Result getRowOrBefore(byte[] row, byte[] family) throws IOException;
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/**
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* Returns a scanner on the current table as specified by the {@link Scan}
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* object.
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* Note that the passed {@link Scan}'s start row and caching properties
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* maybe changed.
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*
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* @param scan A configured {@link Scan} object.
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* @return A scanner.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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ResultScanner getScanner(Scan scan) throws IOException;
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/**
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* Gets a scanner on the current table for the given family.
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*
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* @param family The column family to scan.
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* @return A scanner.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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ResultScanner getScanner(byte[] family) throws IOException;
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/**
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* Gets a scanner on the current table for the given family and qualifier.
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*
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* @param family The column family to scan.
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* @param qualifier The column qualifier to scan.
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* @return A scanner.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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ResultScanner getScanner(byte[] family, byte[] qualifier) throws IOException;
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/**
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* Puts some data in the table.
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* <p>
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* If {@link #isAutoFlush isAutoFlush} is false, the update is buffered
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* until the internal buffer is full.
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* @param put The data to put.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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void put(Put put) throws IOException;
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/**
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* Puts some data in the table, in batch.
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* <p>
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* If {@link #isAutoFlush isAutoFlush} is false, the update is buffered
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* until the internal buffer is full.
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* <p>
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* This can be used for group commit, or for submitting user defined
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* batches. The writeBuffer will be periodically inspected while the List
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* is processed, so depending on the List size the writeBuffer may flush
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* not at all, or more than once.
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* @param puts The list of mutations to apply. The batch put is done by
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* aggregating the iteration of the Puts over the write buffer
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* at the client-side for a single RPC call.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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void put(List<Put> puts) throws IOException;
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/**
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* Atomically checks if a row/family/qualifier value matches the expected
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* value. If it does, it adds the put. If the passed value is null, the check
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* is for the lack of column (ie: non-existance)
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*
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* @param row to check
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* @param family column family to check
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* @param qualifier column qualifier to check
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* @param value the expected value
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* @param put data to put if check succeeds
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* @throws IOException e
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* @return true if the new put was executed, false otherwise
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*/
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boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier,
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byte[] value, Put put) throws IOException;
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boolean checkAndPut(byte[] row, byte[] family, byte[] qualifier,
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CompareOp compareOp, byte[] value, Put put) throws IOException;
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/**
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* Deletes the specified cells/row.
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*
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* @param delete The object that specifies what to delete.
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* @throws IOException if a remote or network exception occurs.
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* @since 0.20.0
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*/
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void delete(Delete delete) throws IOException;
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/**
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* Deletes the specified cells/rows in bulk.
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* @param deletes List of things to delete. List gets modified by this
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* method (in particular it gets re-ordered, so the order in which the elements
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* are inserted in the list gives no guarantee as to the order in which the
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* {@link Delete}s are executed).
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* @throws IOException if a remote or network exception occurs. In that case
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* the {@code deletes} argument will contain the {@link Delete} instances
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* that have not be successfully applied.
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* @since 0.20.1
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*/
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void delete(List<Delete> deletes) throws IOException;
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/**
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* Atomically checks if a row/family/qualifier value matches the expected
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* value. If it does, it adds the delete. If the passed value is null, the
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* check is for the lack of column (ie: non-existance)
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*
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* @param row to check
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* @param family column family to check
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* @param qualifier column qualifier to check
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* @param value the expected value
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* @param delete data to delete if check succeeds
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* @throws IOException e
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* @return true if the new delete was executed, false otherwise
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*/
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boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier,
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byte[] value, Delete delete) throws IOException;
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boolean checkAndDelete(byte[] row, byte[] family, byte[] qualifier,
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CompareOp compareOp, byte[] value, Delete delete) throws IOException;
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/**
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* Performs multiple mutations atomically on a single row. Currently
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* {@link Put} and {@link Delete} are supported.
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*
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* @param rm object that specifies the set of mutations to perform atomically
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* @throws IOException
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*/
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void mutateRow(final RowMutations rm) throws IOException;
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/**
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* Appends values to one or more columns within a single row.
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* <p>
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* This operation does not appear atomic to readers. Appends are done
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* under a single row lock, so write operations to a row are synchronized, but
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* readers do not take row locks so get and scan operations can see this
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* operation partially completed.
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*
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* @param append object that specifies the columns and amounts to be used
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* for the increment operations
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* @throws IOException e
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* @return values of columns after the append operation (maybe null)
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*/
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Result append(final Append append) throws IOException;
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/**
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* Increments one or more columns within a single row.
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* <p>
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* This operation does not appear atomic to readers. Increments are done
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* under a single row lock, so write operations to a row are synchronized, but
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* readers do not take row locks so get and scan operations can see this
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* operation partially completed.
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*
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* @param increment object that specifies the columns and amounts to be used
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* for the increment operations
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* @throws IOException e
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* @return values of columns after the increment
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*/
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Result increment(final Increment increment) throws IOException;
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/**
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* See {@link #incrementColumnValue(byte[], byte[], byte[], long, Durability)}
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* <p>
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* The {@link Durability} is defaulted to {@link Durability#SYNC_WAL}.
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* @param row The row that contains the cell to increment.
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* @param family The column family of the cell to increment.
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* @param qualifier The column qualifier of the cell to increment.
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* @param amount The amount to increment the cell with (or decrement, if the
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* amount is negative).
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* @return The new value, post increment.
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* @throws IOException if a remote or network exception occurs.
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*/
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long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier,
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long amount) throws IOException;
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/**
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* Atomically increments a column value. If the column value already exists
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* and is not a big-endian long, this could throw an exception. If the column
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* value does not yet exist it is initialized to <code>amount</code> and
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* written to the specified column.
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*
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* <p>Setting durability to {@link Durability#SKIP_WAL} means that in a fail
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* scenario you will lose any increments that have not been flushed.
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* @param row The row that contains the cell to increment.
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* @param family The column family of the cell to increment.
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* @param qualifier The column qualifier of the cell to increment.
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* @param amount The amount to increment the cell with (or decrement, if the
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* amount is negative).
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* @param durability The persistence guarantee for this increment.
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* @return The new value, post increment.
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* @throws IOException if a remote or network exception occurs.
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*/
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long incrementColumnValue(byte[] row, byte[] family, byte[] qualifier,
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long amount, Durability durability) throws IOException;
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/**
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* @deprecated Use {@link #incrementColumnValue(byte[], byte[], byte[], long, Durability)}
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*/
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@ -410,115 +49,11 @@ public interface HTableInterface extends Closeable {
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throws IOException;
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/**
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* Tells whether or not 'auto-flush' is turned on.
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*
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* @return {@code true} if 'auto-flush' is enabled (default), meaning
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* {@link Put} operations don't get buffered/delayed and are immediately
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* executed.
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* @deprecated Use {@link #existsAll(java.util.List)} instead.
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*/
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boolean isAutoFlush();
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@Deprecated
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Boolean[] exists(List<Get> gets) throws IOException;
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/**
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* Executes all the buffered {@link Put} operations.
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* <p>
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* This method gets called once automatically for every {@link Put} or batch
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* of {@link Put}s (when <code>put(List<Put>)</code> 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.
|
||||
*
|
||||
* <p>
|
||||
* 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:
|
||||
* </p>
|
||||
*
|
||||
* <div style="background-color: #cccccc; padding: 2px">
|
||||
* <blockquote><pre>
|
||||
* CoprocessorRpcChannel channel = myTable.coprocessorService(rowkey);
|
||||
* MyService.BlockingInterface service = MyService.newBlockingStub(channel);
|
||||
* MyCallRequest request = MyCallRequest.newBuilder()
|
||||
* ...
|
||||
* .build();
|
||||
* MyCallResponse response = service.myCall(null, request);
|
||||
* </pre></blockquote></div>
|
||||
*
|
||||
* @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 <T> the {@link Service} subclass to connect to
|
||||
* @param <R> 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
|
||||
*/
|
||||
<T extends Service, R> Map<byte[],R> coprocessorService(final Class<T> service,
|
||||
byte[] startKey, byte[] endKey, final Batch.Call<T,R> 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.
|
||||
*
|
||||
* <p>
|
||||
* 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.
|
||||
*</p>
|
||||
*
|
||||
* @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 <T> the {@link Service} subclass to connect to
|
||||
* @param <R> Return type for the {@code callable} parameter's
|
||||
* {@link org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method
|
||||
*/
|
||||
<T extends Service, R> void coprocessorService(final Class<T> service,
|
||||
byte[] startKey, byte[] endKey, final Batch.Call<T,R> callable,
|
||||
final Batch.Callback<R> 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.
|
||||
* <p>
|
||||
* 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.
|
||||
* <p>
|
||||
* 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 <i>row</i> 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 <R>
|
||||
* the response type for the coprocessor Service method
|
||||
* @throws ServiceException
|
||||
* @throws Throwable
|
||||
* @return a map of result values keyed by region name
|
||||
*/
|
||||
<R extends Message> Map<byte[], R> 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.
|
||||
*
|
||||
* <p>
|
||||
* 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.
|
||||
* </p>
|
||||
*
|
||||
* @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 <R>
|
||||
* the response type for the coprocessor Service method
|
||||
* @throws ServiceException
|
||||
* @throws Throwable
|
||||
*/
|
||||
<R extends Message> void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor,
|
||||
Message request, byte[] startKey, byte[] endKey, R responsePrototype,
|
||||
Batch.Callback<R> callback) throws ServiceException, Throwable;
|
||||
@Deprecated
|
||||
Result getRowOrBefore(byte[] row, byte[] family) throws IOException;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -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.
|
||||
* <p>
|
||||
* 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.
|
||||
* <p>
|
||||
*
|
||||
* This will return true if the Get matches one or more keys, false if not.
|
||||
* <p>
|
||||
*
|
||||
* 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.
|
||||
* <p>
|
||||
*
|
||||
* This will return an array of booleans. Each value will be true if the related Get matches
|
||||
* one or more keys, false if not.
|
||||
* <p>
|
||||
*
|
||||
* 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<Get> 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<? extends Row> 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<? extends Row> actions) throws IOException, InterruptedException;
|
||||
|
||||
/**
|
||||
* Same as {@link #batch(List, Object[])}, but with a callback.
|
||||
* @since 0.96.0
|
||||
*/
|
||||
<R> void batchCallback(
|
||||
final List<? extends Row> actions, final Object[] results, final Batch.Callback<R> 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
|
||||
<R> Object[] batchCallback(
|
||||
List<? extends Row> actions, Batch.Callback<R> 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<Get> 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.
|
||||
* <p>
|
||||
* 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.
|
||||
* <p>
|
||||
* If {@link #isAutoFlush isAutoFlush} is false, the update is buffered
|
||||
* until the internal buffer is full.
|
||||
* <p>
|
||||
* 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<Put> 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<Delete> 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.
|
||||
* <p>
|
||||
* 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.
|
||||
* <p>
|
||||
* 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)}
|
||||
* <p>
|
||||
* 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 <code>amount</code> and
|
||||
* written to the specified column.
|
||||
*
|
||||
* <p>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.
|
||||
*
|
||||
* <p>
|
||||
* 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:
|
||||
* </p>
|
||||
*
|
||||
* <div style="background-color: #cccccc; padding: 2px">
|
||||
* <blockquote><pre>
|
||||
* CoprocessorRpcChannel channel = myTable.coprocessorService(rowkey);
|
||||
* MyService.BlockingInterface service = MyService.newBlockingStub(channel);
|
||||
* MyCallRequest request = MyCallRequest.newBuilder()
|
||||
* ...
|
||||
* .build();
|
||||
* MyCallResponse response = service.myCall(null, request);
|
||||
* </pre></blockquote></div>
|
||||
*
|
||||
* @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 <T> the {@link com.google.protobuf.Service} subclass to connect to
|
||||
* @param <R> 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
|
||||
*/
|
||||
<T extends Service, R> Map<byte[],R> coprocessorService(final Class<T> service,
|
||||
byte[] startKey, byte[] endKey, final Batch.Call<T,R> 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.
|
||||
*
|
||||
* <p> 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. </p>
|
||||
*
|
||||
* @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 <T> the {@link Service} subclass to connect to
|
||||
* @param <R> Return type for the {@code callable} parameter's {@link
|
||||
* org.apache.hadoop.hbase.client.coprocessor.Batch.Call#call} method
|
||||
*/
|
||||
<T extends Service, R> void coprocessorService(final Class<T> service,
|
||||
byte[] startKey, byte[] endKey, final Batch.Call<T,R> callable,
|
||||
final Batch.Callback<R> 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.
|
||||
* <p>
|
||||
* This method gets called once automatically for every {@link Put} or batch
|
||||
* of {@link Put}s (when <code>put(List<Put>)</code> 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.
|
||||
* <p>
|
||||
* 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.
|
||||
* <p>
|
||||
* 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 <R>
|
||||
* the response type for the coprocessor Service method
|
||||
* @throws ServiceException
|
||||
* @throws Throwable
|
||||
* @return a map of result values keyed by region name
|
||||
*/
|
||||
<R extends Message> Map<byte[], R> 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.
|
||||
*
|
||||
* <p>
|
||||
* 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.
|
||||
* </p>
|
||||
*
|
||||
* @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 <R>
|
||||
* the response type for the coprocessor Service method
|
||||
* @throws ServiceException
|
||||
* @throws Throwable
|
||||
*/
|
||||
<R extends Message> void batchCoprocessorService(Descriptors.MethodDescriptor methodDescriptor,
|
||||
Message request, byte[] startKey, byte[] endKey, R responsePrototype,
|
||||
Batch.Callback<R> callback) throws ServiceException, Throwable;
|
||||
}
|
||||
|
|
@ -140,6 +140,11 @@ public class HTableWrapper implements HTableInterface {
|
|||
return table.exists(get);
|
||||
}
|
||||
|
||||
public boolean[] existsAll(List<Get> gets) throws IOException{
|
||||
return table.existsAll(gets);
|
||||
}
|
||||
|
||||
@Deprecated
|
||||
public Boolean[] exists(List<Get> gets) throws IOException{
|
||||
return table.exists(gets);
|
||||
}
|
||||
|
|
|
|||
|
|
@ -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<Get> gets) throws IOException {
|
||||
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()];
|
||||
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;
|
||||
}
|
||||
|
||||
public void put(Put put) throws IOException {
|
||||
CellSetModel model = buildModelFromPut(put);
|
||||
StringBuilder sb = new StringBuilder();
|
||||
|
|
|
|||
|
|
@ -372,6 +372,12 @@ public class HTablePool implements Closeable {
|
|||
return table.exists(get);
|
||||
}
|
||||
|
||||
@Override
|
||||
public boolean[] existsAll(List<Get> gets) throws IOException {
|
||||
checkState();
|
||||
return table.existsAll(gets);
|
||||
}
|
||||
|
||||
@Override
|
||||
public Boolean[] exists(List<Get> gets) throws IOException {
|
||||
checkState();
|
||||
|
|
|
|||
Loading…
Reference in New Issue