JobSplit (Hadoop 1.2.2-SNAPSHOT API)

```
public class JobSplit
extends Object
```
This class groups the fundamental classes associated with reading/writing splits. The split information is divided into two parts based on the consumer of the information. The two parts are the split meta information, and the raw split information. The first part is consumed by the JobTracker to create the tasks' locality data structures. The second part is used by the maps at runtime to know what to do! These pieces of information are written to two separate files. The metainformation file is slurped by the JobTracker during job initialization. A map task gets the meta information during the launch and it reads the raw split bytes directly from the file.

嵌套类
限定符和类型	类和说明
`static class`	`JobSplit.SplitMetaInfo` This represents the meta information about the task split.
`static class`	`JobSplit.TaskSplitIndex` This represents the meta information about the task split that the task gets
`static class`	`JobSplit.TaskSplitMetaInfo` This represents the meta information about the task split that the JobTracker creates

字段
限定符和类型	字段和说明
`static JobSplit.TaskSplitMetaInfo`	`EMPTY_TASK_SPLIT`

构造器
构造器和说明
`JobSplit()`

public static final JobSplit.TaskSplitMetaInfo EMPTY_TASK_SPLIT

类 JobSplit