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java.lang.Objectorg.apache.hadoop.filecache.TaskDistributedCacheManager
public class TaskDistributedCacheManager
Helper class of TrackerDistributedCacheManager that represents
the cached files of a single job.
This class is internal to Hadoop, and should not be treated as a public
interface.
| Method Summary | |
|---|---|
List<String> |
getClassPaths()
Retrieves class paths (as local references) to add. |
ClassLoader |
makeClassLoader(ClassLoader parent)
Creates a class loader that includes the designated files and archives. |
void |
release()
Releases the cached files/archives, so that space can be reclaimed by the TrackerDistributedCacheManager. |
void |
setSizes(long[] sizes)
|
void |
setupCache(Configuration taskConf,
String publicCacheSubdir,
String privateCacheSubdir)
Retrieve public distributed cache files into the local cache and updates the task configuration (which has been passed in via the constructor). |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
| Method Detail |
|---|
public void setupCache(Configuration taskConf,
String publicCacheSubdir,
String privateCacheSubdir)
throws IOException
JobLocalizer.
It is the caller's responsibility to re-write the task configuration XML
file, if necessary.
IOException
public List<String> getClassPaths()
throws IOException
IOException
public void release()
throws IOException
TrackerDistributedCacheManager.
IOException
public void setSizes(long[] sizes)
throws IOException
IOException
public ClassLoader makeClassLoader(ClassLoader parent)
throws MalformedURLException
MalformedURLException
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