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

Changed Constructors
`TaskTracker`(`JobConf`) | Change in exceptions thrown from `java.io.IOException` to (`java.io.IOException, java.lang.InterruptedException`). | Start with the local machine name and the default JobTracker

Added Methods
`void` `fatalError`(`TaskAttemptID,` String) | A child task had a fatal error.
`String` `getJobCacheSubdir`(`String`) |
`String` `getLocalJobDir`(`String,` String) |
`String` `getLocalTaskDir`(`String,` String, String, boolean) |
`String` `getPrivateDistributedCacheDir`(`String`) |
`String` `getPublicDistributedCacheDir`() |
`TaskController` `getTaskController`() |
`String` `getUserDir`(`String`) |

Changed Methods
`boolean` `canCommit`(`TaskAttemptID`) | Change in exceptions thrown from no exceptions to `java.io.IOException`. | Child checking whether it can commit
`Class` `getInstrumentationClass`(`Configuration`) | Change in return type from (`Class`) to `Class`. |
`JvmTask` `getTask`(`JvmContext`) | Change in signature from `JVMId` to `JvmContext`. | Called upon startup by the child process to fetch Task data.
`void` `setInstrumentationClass`(`Configuration,` Class) | Change in signature from (`Configuration, Class`) to (`Configuration, Class`). |

Added Fields
`String` `SUBDIR` |
`String` `TT_KEYTAB_FILE` |
`String` `TT_USER_NAME` |

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