com.bigdata.bop.join

Interface SolutionSetHashJoinOp.Annotations

All Superinterfaces:

BOp.Annotations, BufferAnnotations, NamedSetAnnotations, PipelineOp.Annotations

Enclosing class:

SolutionSetHashJoinOp

public static interface SolutionSetHashJoinOp.Annotations
extends PipelineOp.Annotations, NamedSetAnnotations

Field Summary

Fields

Modifier and Type	Field and Description
static String	CONSTRAINTS An IConstraint[] to be applied to solutions when they are joined (optional).
static boolean	DEFAULT_RELEASE
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.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

An IConstraint[] to be applied to solutions when they are joined (optional).

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.

Note: Any memory associated with the IRunningQuery will be released no later than when the Future.isDone(). This only provides a means to release data as soon as it is known that the data will not be referenced again during the query.

DEFAULT_RELEASE

static final boolean DEFAULT_RELEASE

See Also:

Constant Field Values