org.apache.cassandra.hadoop
Class ConfigHelper

java.lang.Object
  org.apache.cassandra.hadoop.ConfigHelper

public class ConfigHelper
extends java.lang.Object

Constructor Summary

ConfigHelper()

Method Summary

static org.apache.cassandra.thrift.Cassandra.Client	createConnection(java.lang.String host, java.lang.Integer port, boolean framed)
static org.apache.cassandra.thrift.Cassandra.Client	getClientFromInputAddressList(org.apache.hadoop.conf.Configuration conf)
static org.apache.cassandra.thrift.Cassandra.Client	getClientFromOutputAddressList(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getInputColumnFamily(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getInputInitialAddress(org.apache.hadoop.conf.Configuration conf)
static boolean	getInputIsWide(org.apache.hadoop.conf.Configuration conf)
static org.apache.cassandra.thrift.KeyRange	getInputKeyRange(org.apache.hadoop.conf.Configuration conf) may be null if unset
static java.lang.String	getInputKeyspace(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getInputKeyspacePassword(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getInputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf)
static IPartitioner	getInputPartitioner(org.apache.hadoop.conf.Configuration conf)
static int	getInputRpcPort(org.apache.hadoop.conf.Configuration conf)
static org.apache.cassandra.thrift.SlicePredicate	getInputSlicePredicate(org.apache.hadoop.conf.Configuration conf)
static int	getInputSplitSize(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputColumnFamily(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputCompressionChunkLength(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputCompressionClass(org.apache.hadoop.conf.Configuration conf)
static CompressionParameters	getOutputCompressionParamaters(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputInitialAddress(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputKeyspace(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputKeyspacePassword(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getOutputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf)
static IPartitioner	getOutputPartitioner(org.apache.hadoop.conf.Configuration conf)
static int	getOutputRpcPort(org.apache.hadoop.conf.Configuration conf)
static int	getRangeBatchSize(org.apache.hadoop.conf.Configuration conf) The number of rows to request with each get range slices request.
static java.lang.String	getReadConsistencyLevel(org.apache.hadoop.conf.Configuration conf)
static java.lang.String	getWriteConsistencyLevel(org.apache.hadoop.conf.Configuration conf)
static void	setInputColumnFamily(org.apache.hadoop.conf.Configuration conf, java.lang.String keyspace, java.lang.String columnFamily) Set the keyspace and column family for the input of this job.
static void	setInputColumnFamily(org.apache.hadoop.conf.Configuration conf, java.lang.String keyspace, java.lang.String columnFamily, boolean widerows) Set the keyspace and column family for the input of this job.
static void	setInputInitialAddress(org.apache.hadoop.conf.Configuration conf, java.lang.String address)
static void	setInputPartitioner(org.apache.hadoop.conf.Configuration conf, java.lang.String classname)
static void	setInputRange(org.apache.hadoop.conf.Configuration conf, java.util.List<org.apache.cassandra.thrift.IndexExpression> filter) Set the KeyRange to limit the rows.
static void	setInputRange(org.apache.hadoop.conf.Configuration conf, java.lang.String startToken, java.lang.String endToken) Set the KeyRange to limit the rows.
static void	setInputRange(org.apache.hadoop.conf.Configuration conf, java.lang.String startToken, java.lang.String endToken, java.util.List<org.apache.cassandra.thrift.IndexExpression> filter) Set the KeyRange to limit the rows.
static void	setInputRpcPort(org.apache.hadoop.conf.Configuration conf, java.lang.String port)
static void	setInputSlicePredicate(org.apache.hadoop.conf.Configuration conf, org.apache.cassandra.thrift.SlicePredicate predicate) Set the predicate that determines what columns will be selected from each row.
static void	setInputSplitSize(org.apache.hadoop.conf.Configuration conf, int splitsize) Set the size of the input split.
static void	setOutputColumnFamily(org.apache.hadoop.conf.Configuration conf, java.lang.String keyspace, java.lang.String columnFamily) Set the keyspace and column family for the output of this job.
static void	setOutputCompressionChunkLength(org.apache.hadoop.conf.Configuration conf, java.lang.String length)
static void	setOutputCompressionClass(org.apache.hadoop.conf.Configuration conf, java.lang.String classname)
static void	setOutputInitialAddress(org.apache.hadoop.conf.Configuration conf, java.lang.String address)
static void	setOutputKeyspacePassword(org.apache.hadoop.conf.Configuration conf, java.lang.String password)
static void	setOutputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf, java.lang.String username)
static void	setOutputPartitioner(org.apache.hadoop.conf.Configuration conf, java.lang.String classname)
static void	setOutputRpcPort(org.apache.hadoop.conf.Configuration conf, java.lang.String port)
static void	setRangeBatchSize(org.apache.hadoop.conf.Configuration conf, int batchsize) The number of rows to request with each get range slices request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ConfigHelper

public ConfigHelper()

Method Detail

setInputColumnFamily

public static void setInputColumnFamily(org.apache.hadoop.conf.Configuration conf,
                                        java.lang.String keyspace,
                                        java.lang.String columnFamily,
                                        boolean widerows)

Set the keyspace and column family for the input of this job.

Parameters:

conf - Job configuration you are about to run

keyspace -

columnFamily -

widerows -

setInputColumnFamily

public static void setInputColumnFamily(org.apache.hadoop.conf.Configuration conf,
                                        java.lang.String keyspace,
                                        java.lang.String columnFamily)

Set the keyspace and column family for the input of this job.

Parameters:

conf - Job configuration you are about to run

keyspace -

columnFamily -

setOutputColumnFamily

public static void setOutputColumnFamily(org.apache.hadoop.conf.Configuration conf,
                                         java.lang.String keyspace,
                                         java.lang.String columnFamily)

Set the keyspace and column family for the output of this job.

Parameters:

conf - Job configuration you are about to run

keyspace -

columnFamily -

setRangeBatchSize

public static void setRangeBatchSize(org.apache.hadoop.conf.Configuration conf,
                                     int batchsize)

The number of rows to request with each get range slices request. Too big and you can either get timeouts when it takes Cassandra too long to fetch all the data. Too small and the performance will be eaten up by the overhead of each request.

Parameters:

conf - Job configuration you are about to run

batchsize - Number of rows to request each time

getRangeBatchSize

public static int getRangeBatchSize(org.apache.hadoop.conf.Configuration conf)

The number of rows to request with each get range slices request. Too big and you can either get timeouts when it takes Cassandra too long to fetch all the data. Too small and the performance will be eaten up by the overhead of each request.

Parameters:

conf - Job configuration you are about to run

Returns:

Number of rows to request each time

setInputSplitSize

public static void setInputSplitSize(org.apache.hadoop.conf.Configuration conf,
                                     int splitsize)

Set the size of the input split. This affects the number of maps created, if the number is too small the overhead of each map will take up the bulk of the job time.

Parameters:

conf - Job configuration you are about to run

splitsize - Size of the input split

getInputSplitSize

public static int getInputSplitSize(org.apache.hadoop.conf.Configuration conf)

setInputSlicePredicate

public static void setInputSlicePredicate(org.apache.hadoop.conf.Configuration conf,
                                          org.apache.cassandra.thrift.SlicePredicate predicate)

Set the predicate that determines what columns will be selected from each row.

Parameters:

conf - Job configuration you are about to run

predicate -

getInputSlicePredicate

public static org.apache.cassandra.thrift.SlicePredicate getInputSlicePredicate(org.apache.hadoop.conf.Configuration conf)

setInputRange

public static void setInputRange(org.apache.hadoop.conf.Configuration conf,
                                 java.lang.String startToken,
                                 java.lang.String endToken)

Set the KeyRange to limit the rows.

Parameters:

conf - Job configuration you are about to run

setInputRange

public static void setInputRange(org.apache.hadoop.conf.Configuration conf,
                                 java.lang.String startToken,
                                 java.lang.String endToken,
                                 java.util.List<org.apache.cassandra.thrift.IndexExpression> filter)

Set the KeyRange to limit the rows.

Parameters:

conf - Job configuration you are about to run

setInputRange

public static void setInputRange(org.apache.hadoop.conf.Configuration conf,
                                 java.util.List<org.apache.cassandra.thrift.IndexExpression> filter)

Set the KeyRange to limit the rows.

Parameters:

conf - Job configuration you are about to run

getInputKeyRange

public static org.apache.cassandra.thrift.KeyRange getInputKeyRange(org.apache.hadoop.conf.Configuration conf)

may be null if unset

getInputKeyspace

public static java.lang.String getInputKeyspace(org.apache.hadoop.conf.Configuration conf)

getOutputKeyspace

public static java.lang.String getOutputKeyspace(org.apache.hadoop.conf.Configuration conf)

getInputKeyspaceUserName

public static java.lang.String getInputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf)

getInputKeyspacePassword

public static java.lang.String getInputKeyspacePassword(org.apache.hadoop.conf.Configuration conf)

setOutputKeyspaceUserName

public static void setOutputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf,
                                             java.lang.String username)

getOutputKeyspaceUserName

public static java.lang.String getOutputKeyspaceUserName(org.apache.hadoop.conf.Configuration conf)

setOutputKeyspacePassword

public static void setOutputKeyspacePassword(org.apache.hadoop.conf.Configuration conf,
                                             java.lang.String password)

getOutputKeyspacePassword

public static java.lang.String getOutputKeyspacePassword(org.apache.hadoop.conf.Configuration conf)

getInputColumnFamily

public static java.lang.String getInputColumnFamily(org.apache.hadoop.conf.Configuration conf)

getInputIsWide

public static boolean getInputIsWide(org.apache.hadoop.conf.Configuration conf)

getOutputColumnFamily

public static java.lang.String getOutputColumnFamily(org.apache.hadoop.conf.Configuration conf)

getReadConsistencyLevel

public static java.lang.String getReadConsistencyLevel(org.apache.hadoop.conf.Configuration conf)

getWriteConsistencyLevel

public static java.lang.String getWriteConsistencyLevel(org.apache.hadoop.conf.Configuration conf)

getInputRpcPort

public static int getInputRpcPort(org.apache.hadoop.conf.Configuration conf)

setInputRpcPort

public static void setInputRpcPort(org.apache.hadoop.conf.Configuration conf,
                                   java.lang.String port)

getInputInitialAddress

public static java.lang.String getInputInitialAddress(org.apache.hadoop.conf.Configuration conf)

setInputInitialAddress

public static void setInputInitialAddress(org.apache.hadoop.conf.Configuration conf,
                                          java.lang.String address)

setInputPartitioner

public static void setInputPartitioner(org.apache.hadoop.conf.Configuration conf,
                                       java.lang.String classname)

getInputPartitioner

public static IPartitioner getInputPartitioner(org.apache.hadoop.conf.Configuration conf)

getOutputRpcPort

public static int getOutputRpcPort(org.apache.hadoop.conf.Configuration conf)

setOutputRpcPort

public static void setOutputRpcPort(org.apache.hadoop.conf.Configuration conf,
                                    java.lang.String port)

getOutputInitialAddress

public static java.lang.String getOutputInitialAddress(org.apache.hadoop.conf.Configuration conf)

setOutputInitialAddress

public static void setOutputInitialAddress(org.apache.hadoop.conf.Configuration conf,
                                           java.lang.String address)

setOutputPartitioner

public static void setOutputPartitioner(org.apache.hadoop.conf.Configuration conf,
                                        java.lang.String classname)

getOutputPartitioner

public static IPartitioner getOutputPartitioner(org.apache.hadoop.conf.Configuration conf)

getOutputCompressionClass

public static java.lang.String getOutputCompressionClass(org.apache.hadoop.conf.Configuration conf)

getOutputCompressionChunkLength

public static java.lang.String getOutputCompressionChunkLength(org.apache.hadoop.conf.Configuration conf)

setOutputCompressionClass

public static void setOutputCompressionClass(org.apache.hadoop.conf.Configuration conf,
                                             java.lang.String classname)

setOutputCompressionChunkLength

public static void setOutputCompressionChunkLength(org.apache.hadoop.conf.Configuration conf,
                                                   java.lang.String length)

getOutputCompressionParamaters

public static CompressionParameters getOutputCompressionParamaters(org.apache.hadoop.conf.Configuration conf)

getClientFromInputAddressList

public static org.apache.cassandra.thrift.Cassandra.Client getClientFromInputAddressList(org.apache.hadoop.conf.Configuration conf)
                                                                                  throws java.io.IOException

Throws:

java.io.IOException

getClientFromOutputAddressList

public static org.apache.cassandra.thrift.Cassandra.Client getClientFromOutputAddressList(org.apache.hadoop.conf.Configuration conf)
                                                                                   throws java.io.IOException

Throws:

java.io.IOException

createConnection

public static org.apache.cassandra.thrift.Cassandra.Client createConnection(java.lang.String host,
                                                                            java.lang.Integer port,
                                                                            boolean framed)
                                                                     throws java.io.IOException

Throws:

java.io.IOException