UI_PATH_PREFIX
HistoryServer
UnionRDD
rdd
UnknownReason
spark
UnsafeExternalSorter
sort
UnsafeInMemorySorter
sort
UnsafeShuffleWriter
unsafe
UnsafeSorterIterator
sort
ui
spark
unary_-
Vector
unbroadcast
BroadcastFactory HttpBroadcastFactory TorrentBroadcastFactory
underlyingSplit
SplitInfo
union
SparkContext JavaDoubleRDD JavaPairRDD JavaRDD JavaSparkContext RDD OpenHashSet
uniqueId
StreamBlockId
unpersist
JavaDoubleRDD JavaPairRDD JavaRDD Broadcast PersistenceEngine RDD
unsafe
shuffle spark collection
unset
TaskContext BitSet
update
AccumulableInfo AccumulableInfo MutablePair AppendOnlyMap
updateAggregateMetrics
JobProgressListener
updateBytesRead
InputMetrics
updatedBlocks
TaskMetrics
uploadBlock
NettyBlockTransferService NioBlockTransferService
useDisk
StorageLevel
useMemory
StorageLevel
useOffHeap
StorageLevel
user
JobLogger
util
spark