org.apache.hadoop.mapred.TaskAttemptID
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## Class org.apache.hadoop.mapred.`TaskAttemptID`

The superclass changed from `org.apache.hadoop.mapred.ID` to `org.apache.hadoop.mapreduce.TaskAttemptID`.

Added Constructors
`TaskAttemptID`() |

Added Methods
`TaskAttemptID` `downgrade`(`TaskAttemptID`) | Downgrade a new TaskAttemptID to an old one

Changed Methods
`int` `compareTo`(`ID`) | Change in signature from `org.apache.hadoop.mapred.ID` to `org.apache.hadoop.mapreduce.ID`. Method was locally defined, but is now inherited from `TaskAttemptID`. | Compare TaskIds by first tipIds then by task numbers.
`boolean` `equals`(`Object`) | Method was locally defined, but is now inherited from `TaskAttemptID`. |
`int` `hashCode`() | Method was locally defined, but is now inherited from `TaskAttemptID`. |
`boolean` `isMap`() | Method was locally defined, but is now inherited from `TaskAttemptID`. | Returns whether this TaskAttemptID is a map ID
`void` `readFields`(`DataInput`) | Method was locally defined, but is now inherited from `TaskAttemptID`. |
`String` `toString`() | Method was locally defined, but is now inherited from `TaskAttemptID`. |
`void` `write`(`DataOutput`) | Method was locally defined, but is now inherited from `TaskAttemptID`. |

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