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java.lang.Objectorg.apache.hadoop.mapred.TaskTrackerMetricsSource
public class TaskTrackerMetricsSource
Instrumentation for metrics v2
| Field Summary | |
|---|---|
protected TaskTracker |
tt
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| Constructor Summary | |
|---|---|
TaskTrackerMetricsSource(TaskTracker tt)
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| Method Summary | |
|---|---|
void |
completeTask(TaskAttemptID t)
invoked when task attempt t succeeds |
void |
getMetrics(MetricsBuilder builder,
boolean all)
Get metrics from the source |
void |
reportTaskEnd(TaskAttemptID t)
called when task t has just finished. |
void |
reportTaskLaunch(TaskAttemptID t,
File stdout,
File stderr)
Called just before task attempt t starts. |
void |
taskFailedPing(TaskAttemptID t)
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void |
timedoutTask(TaskAttemptID t)
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| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Field Detail |
|---|
protected final TaskTracker tt
| Constructor Detail |
|---|
public TaskTrackerMetricsSource(TaskTracker tt)
| Method Detail |
|---|
public void getMetrics(MetricsBuilder builder,
boolean all)
MetricsSource
getMetrics in interface MetricsSourcebuilder - to contain the resulting metrics snapshotall - if true, return all metrics even if unchanged.public void completeTask(TaskAttemptID t)
public void timedoutTask(TaskAttemptID t)
public void taskFailedPing(TaskAttemptID t)
public void reportTaskLaunch(TaskAttemptID t,
File stdout,
File stderr)
stdout - the file containing standard out of the new taskstderr - the file containing standard error of the new taskpublic void reportTaskEnd(TaskAttemptID t)
t -
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