Uses of Class org.apache.hadoop.mapred.TaskTrackerStatus (Hadoop 1.2.1 API)
Date: 2013-07-22

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## Uses of Class
org.apache.hadoop.mapred.TaskTrackerStatus

Packages that use TaskTrackerStatus
org.apache.hadoop.mapred | A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.
org.apache.hadoop.mapreduce.server.jobtracker |

Uses of TaskTrackerStatus in org.apache.hadoop.mapred

Methods in org.apache.hadoop.mapred that return TaskTrackerStatus
`TaskTrackerStatus` | `JobTracker.getTaskTrackerStatus(String trackerID)`

Methods in org.apache.hadoop.mapred that return types with arguments of type TaskTrackerStatus
`Collection<TaskTrackerStatus>` | `JobTracker.activeTaskTrackers()` Get the active task tracker statuses in the cluster
`Collection<TaskTrackerStatus>` | `JobTracker.blacklistedTaskTrackers()` Get the statuses of the blacklisted task trackers in the cluster.
`Collection<TaskTrackerStatus>` | `JobTracker.graylistedTaskTrackers()` Get the statuses of the graylisted task trackers in the cluster.
`Collection<TaskTrackerStatus>` | `JobTracker.taskTrackers()` Get all the task trackers in the cluster

Methods in org.apache.hadoop.mapred with parameters of type TaskTrackerStatus
`protected org.apache.hadoop.mapred.TaskInProgress` | `JobInProgress.findSpeculativeTask(Collection<org.apache.hadoop.mapred.TaskInProgress> list, TaskTrackerStatus ttStatus, double avgProgress, long currentTime, boolean shouldRemove)` Find a speculative task
`org.apache.hadoop.mapred.HeartbeatResponse` | `JobTracker.heartbeat(TaskTrackerStatus status, boolean restarted, boolean initialContact, boolean acceptNewTasks, short responseId)` The periodic heartbeat mechanism between the `TaskTracker` and the `JobTracker`.
`Task` | `JobInProgress.obtainJobCleanupTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts, boolean isMapSlot)` Return a CleanupTask, if appropriate, to run on the given tasktracker
`Task` | `JobInProgress.obtainJobSetupTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts, boolean isMapSlot)` Return a SetupTask, if appropriate, to run on the given tasktracker
`Task` | `JobInProgress.obtainNewMapTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts)` Return a MapTask, if appropriate, to run on the given tasktracker
`Task` | `JobInProgress.obtainNewMapTaskCommon(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts, int maxCacheLevel)` Return a MapTask with locality level that smaller or equal than a given locality level to tasktracker.
`Task` | `JobInProgress.obtainNewNodeLocalMapTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts)`
`Task` | `JobInProgress.obtainNewNodeOrRackLocalMapTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts)`
`Task` | `JobInProgress.obtainNewNonLocalMapTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts)`
`Task` | `JobInProgress.obtainNewReduceTask(TaskTrackerStatus tts, int clusterSize, int numUniqueHosts)` Return a ReduceTask, if appropriate, to run on the given tasktracker.
`Task` | `JobInProgress.obtainTaskCleanupTask(TaskTrackerStatus tts, boolean isMapSlot)`

Uses of TaskTrackerStatus in org.apache.hadoop.mapreduce.server.jobtracker

Methods in org.apache.hadoop.mapreduce.server.jobtracker that return TaskTrackerStatus
`TaskTrackerStatus` | `TaskTracker.getStatus()` Get the current `TaskTrackerStatus` of the `TaskTracker`.

Methods in org.apache.hadoop.mapreduce.server.jobtracker with parameters of type TaskTrackerStatus
`void` | `TaskTracker.setStatus(TaskTrackerStatus status)` Set the current `TaskTrackerStatus` of the `TaskTracker`.

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