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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 task. This class is used
by TaskRunner/LocalJobRunner to parse out the job configuration
and setup the local caches.
This class is internal to Hadoop, and should not be treated as a public
interface.
Method Summary | |
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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 |
setup(LocalDirAllocator lDirAlloc,
File workDir,
String privateCacheSubdir,
String publicCacheSubDir)
Retrieve 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 |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Method Detail |
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public void setup(LocalDirAllocator lDirAlloc, File workDir, String privateCacheSubdir, String publicCacheSubDir) throws IOException
IOException
public List<String> getClassPaths() throws IOException
IOException
public void release() throws IOException
TrackerDistributedCacheManager
.
IOException
public ClassLoader makeClassLoader(ClassLoader parent) throws MalformedURLException
MalformedURLException
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