VALUE
- @InterfaceAudience.Public public class SimpleTotalOrderPartitioner<VALUE> extends org.apache.hadoop.mapreduce.Partitioner<ImmutableBytesWritable,VALUE> implements org.apache.hadoop.conf.Configurable
hbase.simpletotalorder.start
and hbase.simpletotalorder.end
. The end key needs to be
exclusive; i.e. one larger than the biggest key in your key space.
You may be surprised at how this class partitions the space; it may not
align with preconceptions; e.g. a start key of zero and an end key of 100
divided in ten will not make regions whose range is 0-10, 10-20, and so on.
Make your own partitioner if you need the region spacing to come out a
particular way.Modifier and Type | Field and Description |
---|---|
static String |
END
Deprecated.
|
static String |
START
Deprecated.
|
Constructor and Description |
---|
SimpleTotalOrderPartitioner() |
Modifier and Type | Method and Description |
---|---|
org.apache.hadoop.conf.Configuration |
getConf() |
int |
getPartition(ImmutableBytesWritable key,
VALUE value,
int reduces) |
void |
setConf(org.apache.hadoop.conf.Configuration conf) |
static void |
setEndKey(org.apache.hadoop.conf.Configuration conf,
byte[] endKey) |
static void |
setStartKey(org.apache.hadoop.conf.Configuration conf,
byte[] startKey) |
@Deprecated public static final String START
@Deprecated public static final String END
public static void setStartKey(org.apache.hadoop.conf.Configuration conf, byte[] startKey)
public static void setEndKey(org.apache.hadoop.conf.Configuration conf, byte[] endKey)
public int getPartition(ImmutableBytesWritable key, VALUE value, int reduces)
getPartition
in class org.apache.hadoop.mapreduce.Partitioner<ImmutableBytesWritable,VALUE>
public org.apache.hadoop.conf.Configuration getConf()
getConf
in interface org.apache.hadoop.conf.Configurable
public void setConf(org.apache.hadoop.conf.Configuration conf)
setConf
in interface org.apache.hadoop.conf.Configurable
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