com.bigdata.bop.join

Interface JVMMergeJoin.Annotations

All Superinterfaces:

AccessPathJoinAnnotations, BOp.Annotations, BufferAnnotations, HashJoinAnnotations, HashMapAnnotations, JoinAnnotations, JVMHashJoinAnnotations, NamedSetAnnotations, PipelineOp.Annotations

Enclosing class:

JVMMergeJoin

public static interface JVMMergeJoin.Annotations
extends AccessPathJoinAnnotations, JVMHashJoinAnnotations, NamedSetAnnotations

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONSTRAINTS Constraints to be applied by the join (in addition to any associated with the HTreeHashJoinUtility state in the NamedSetAnnotations.NAMED_SET_REF).
static boolean	DEFAULT_RELEASE
static String	JOIN_TYPE Only JoinTypeEnum.Normal and JoinTypeEnum.Optional merge joins are supported.
static String	RELEASE When true the hash index identified by NamedSetAnnotations.NAMED_SET_REF will be released when this operator is done (default true).

Fields inherited from interface com.bigdata.bop.join.AccessPathJoinAnnotations

PREDICATE

Fields inherited from interface com.bigdata.bop.HashMapAnnotations

DEFAULT_INITIAL_CAPACITY, DEFAULT_LOAD_FACTOR, INITIAL_CAPACITY, LOAD_FACTOR

Fields inherited from interface com.bigdata.bop.join.HashJoinAnnotations

ASK_VAR, DEFAULT_NO_JOIN_VARS_LIMIT, JOIN_VARS, OUTPUT_DISTINCT_JVs

Fields inherited from interface com.bigdata.bop.join.JoinAnnotations

DEFAULT_LIMIT, LIMIT, SELECT

Fields inherited from interface com.bigdata.bop.PipelineOp.Annotations

ALT_SINK_REF, DEFAULT_LAST_PASS, DEFAULT_MAX_MEMORY, DEFAULT_MAX_MESSAGES_PER_TASK, DEFAULT_MAX_PARALLEL, DEFAULT_PIPELINE_QUEUE_CAPACITY, DEFAULT_PIPELINED, DEFAULT_REORDER_SOLUTIONS, DEFAULT_SHARED_STATE, LAST_PASS, MAX_MEMORY, MAX_MESSAGES_PER_TASK, MAX_PARALLEL, PIPELINE_QUEUE_CAPACITY, PIPELINED, REORDER_SOLUTIONS, SHARED_STATE, SINK_REF

Fields inherited from interface com.bigdata.bop.BOp.Annotations

BOP_ID, CONTROLLER, DEFAULT_CONTROLLER, DEFAULT_EVALUATION_CONTEXT, DEFAULT_TIMEOUT, EVALUATION_CONTEXT, NAMESPACE, TIMEOUT

Fields inherited from interface com.bigdata.bop.BufferAnnotations

CHUNK_CAPACITY, CHUNK_OF_CHUNKS_CAPACITY, CHUNK_TIMEOUT, chunkTimeoutUnit, DEFAULT_CHUNK_CAPACITY, DEFAULT_CHUNK_OF_CHUNKS_CAPACITY, DEFAULT_CHUNK_TIMEOUT

Fields inherited from interface com.bigdata.bop.controller.NamedSetAnnotations

NAMED_SET_REF

Field Detail

CONSTRAINTS

static final String CONSTRAINTS

Constraints to be applied by the join (in addition to any associated with the HTreeHashJoinUtility state in the NamedSetAnnotations.NAMED_SET_REF).

JOIN_TYPE

static final String JOIN_TYPE

Only JoinTypeEnum.Normal and JoinTypeEnum.Optional merge joins are supported.

See Also:

JoinAnnotations.JOIN_TYPE

RELEASE

static final String RELEASE

When true the hash index identified by NamedSetAnnotations.NAMED_SET_REF will be released when this operator is done (default true).

Note: Whether or not the hash index can be released depends on whether or not the hash index will be consumed by more than one operator in the query plan. For example, a named solution set can be consumed by more than one operator and thus must not be released until all such operators are done. TODO Alternatively, we could specify the #of different locations in the query plan where the named solution set will be consumed. This could be part of the HTreeHashJoinUtility state, in which case it would only be set as an annotation on the operator which generates the hash index.

DEFAULT_RELEASE

static final boolean DEFAULT_RELEASE

See Also:

Constant Field Values