addResource(
fs: FileSystem,
conf: Configuration,
destPath: Path,
localResources: HashMap[String, LocalResource],
resourceType: LocalResourceType,
link: String,
statCache: Map[URI, FileStatus],
appMasterOnly: Boolean = false): Unit
ClientDistributedCacheManager
ClientDistributedCacheManager
is a mere wrapper to hold the collection of cache-related resource entries CacheEntry
(as distCacheEntries
) to add resources to and later update Spark configuration with files to distribute.
Caution
|
FIXME What is a resource? Is this a file only? |
Adding Cache-Related Resource (addResource method)
Updating Spark Configuration with Resources to Distribute (updateConfiguration method)
updateConfiguration(conf: SparkConf): Unit
updateConfiguration
sets the following internal Spark configuration settings in the input conf
Spark configuration:
It uses the internal distCacheEntries
with resources to distribute.
Note
|
It is later used in ApplicationMaster when it prepares local resources.
|