Package org.apache.hadoop.hive.ql.exec.persistence

Interface Summary

Interface	Description
AbstractRowContainer<ROW>
AbstractRowContainer.RowIterator<ROW>
BytesBytesMultiHashMap.KvSource	The source of keys and values to put into hashtable; avoids byte copying.
MapJoinBytesTableContainer.KeyValueHelper
MapJoinPersistableTableContainer
MapJoinRowContainer
MapJoinTableContainer
MapJoinTableContainer.ReusableGetAdaptor	Retrieve rows from hashtable key by key, one key at a time, w/o copying the structures for each key.
MapJoinTableContainerDirectAccess
ReusableGetAdaptorDirectAccess

Class Summary

Class	Description
AbstractMapJoinTableContainer
BytesBytesMultiHashMap	HashMap that maps byte arrays to byte arrays with limited functionality necessary for MapJoin hash tables, with small memory overhead.
BytesBytesMultiHashMap.Result	The result of looking up a key in the multi-hash map.
FlatRowContainer
HashMapWrapper	Simple wrapper for persistent Hashmap implementing only the put/get/remove/clear interface.
HybridHashTableConf	This conf class is a wrapper of a list of HybridHashTableContainers and some common info shared among them, which is used in n-way join (multiple small tables are involved).
HybridHashTableContainer	Hash table container that can have many partitions -- each partition has its own hashmap, as well as row container for small table and big table.
HybridHashTableContainer.HashPartition	This class encapsulates the triplet together since they are closely related to each other The triplet: hashmap (either in memory or on disk), small table container, big table container
KeyValueContainer	An eager key/value container that puts every row directly to output stream.
MapJoinBytesTableContainer	Table container that serializes keys and values using LazyBinarySerDe into BytesBytesMultiHashMap, with very low memory overhead.
MapJoinBytesTableContainer.DirectKeyValueWriter
MapJoinEagerRowContainer
MapJoinKey	The base class for MapJoinKey.
MapJoinKeyObject
MapJoinObjectSerDeContext
MapJoinTableContainerSerDe
ObjectContainer<ROW>	An eager object container that puts every row directly to output stream.
PTFRowContainer<Row extends List<Object>>	Extends the RowContainer functionality to provide random access getAt(i).
PTFRowContainer.PTFHiveSequenceFileOutputFormat<K,V>
PTFRowContainer.PTFSequenceFileInputFormat<K,V>
PTFRowContainer.PTFSequenceFileRecordReader<K,V>
RowContainer<ROW extends List<Object>>	Simple persistent container for rows.
UnwrapRowContainer	Unwraps values from current key with valueIndex in mapjoin desc