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aqo_pg12.patch
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aqo_pg12.patch
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diff --git a/src/backend/commands/explain.c b/src/backend/commands/explain.c
index 92969636b7..d05b07e037 100644
--- a/src/backend/commands/explain.c
+++ b/src/backend/commands/explain.c
@@ -24,6 +24,7 @@
#include "nodes/extensible.h"
#include "nodes/makefuncs.h"
#include "nodes/nodeFuncs.h"
+#include "optimizer/cost.h"
#include "parser/parsetree.h"
#include "rewrite/rewriteHandler.h"
#include "storage/bufmgr.h"
@@ -46,6 +47,9 @@ ExplainOneQuery_hook_type ExplainOneQuery_hook = NULL;
/* Hook for plugins to get control in explain_get_index_name() */
explain_get_index_name_hook_type explain_get_index_name_hook = NULL;
+/* Hook for plugins to get control in ExplainOnePlan() */
+ExplainOnePlan_hook_type ExplainOnePlan_hook = NULL;
+
/* OR-able flags for ExplainXMLTag() */
#define X_OPENING 0
@@ -596,6 +600,10 @@ ExplainOnePlan(PlannedStmt *plannedstmt, IntoClause *into, ExplainState *es,
ExplainPropertyFloat("Execution Time", "ms", 1000.0 * totaltime, 3,
es);
+ if (ExplainOnePlan_hook)
+ ExplainOnePlan_hook(plannedstmt, into, es,
+ queryString, params, planduration, queryEnv);
+
ExplainCloseGroup("Query", NULL, true, es);
}
@@ -1523,6 +1531,38 @@ ExplainNode(PlanState *planstate, List *ancestors,
appendStringInfo(es->str,
" (actual rows=%.0f loops=%.0f)",
rows, nloops);
+
+#ifdef AQO_EXPLAIN
+ if (es->verbose && plan && planstate->instrument)
+ {
+ int wrkrs = 1;
+ double error = -1.;
+
+ if (planstate->worker_instrument && IsParallelTuplesProcessing(plan))
+ {
+ int i;
+ for (i = 0; i < planstate->worker_instrument->num_workers; i++)
+ {
+ Instrumentation *instrument = &planstate->worker_instrument->instrument[i];
+ if (instrument->nloops <= 0)
+ continue;
+ wrkrs++;
+ }
+ }
+
+ if (plan->predicted_cardinality > 0.)
+ {
+ error = 100. * (plan->predicted_cardinality - (rows*wrkrs))
+ / plan->predicted_cardinality;
+ appendStringInfo(es->str,
+ " (AQO: cardinality=%.0lf, error=%.0lf%%, fsspace_hash=%d)",
+ plan->predicted_cardinality, error, plan->fss_hash);
+ }
+ else
+ appendStringInfo(es->str, " (AQO not used, fsspace_hash=%d)",
+ plan->fss_hash);
+ }
+#endif
}
else
{
diff --git a/src/backend/nodes/copyfuncs.c b/src/backend/nodes/copyfuncs.c
index 78deade89b..b1470147e9 100644
--- a/src/backend/nodes/copyfuncs.c
+++ b/src/backend/nodes/copyfuncs.c
@@ -126,6 +126,12 @@ CopyPlanFields(const Plan *from, Plan *newnode)
COPY_NODE_FIELD(lefttree);
COPY_NODE_FIELD(righttree);
COPY_NODE_FIELD(initPlan);
+ COPY_SCALAR_FIELD(had_path);
+ COPY_NODE_FIELD(path_clauses);
+ COPY_NODE_FIELD(path_relids);
+ COPY_SCALAR_FIELD(path_jointype);
+ COPY_SCALAR_FIELD(path_parallel_workers);
+ COPY_SCALAR_FIELD(was_parametrized);
COPY_BITMAPSET_FIELD(extParam);
COPY_BITMAPSET_FIELD(allParam);
}
diff --git a/src/backend/optimizer/path/costsize.c b/src/backend/optimizer/path/costsize.c
index a2a9b1f7be..4b766b9885 100644
--- a/src/backend/optimizer/path/costsize.c
+++ b/src/backend/optimizer/path/costsize.c
@@ -96,6 +96,10 @@
#include "utils/spccache.h"
#include "utils/tuplesort.h"
+set_baserel_rows_estimate_hook_type set_baserel_rows_estimate_hook = NULL;
+get_parameterized_baserel_size_hook_type get_parameterized_baserel_size_hook = NULL;
+get_parameterized_joinrel_size_hook_type get_parameterized_joinrel_size_hook = NULL;
+set_joinrel_size_estimates_hook_type set_joinrel_size_estimates_hook = NULL;
#define LOG2(x) (log(x) / 0.693147180559945)
@@ -176,7 +180,6 @@ static Cost append_nonpartial_cost(List *subpaths, int numpaths,
static void set_rel_width(PlannerInfo *root, RelOptInfo *rel);
static double relation_byte_size(double tuples, int width);
static double page_size(double tuples, int width);
-static double get_parallel_divisor(Path *path);
/*
@@ -254,7 +257,7 @@ cost_seqscan(Path *path, PlannerInfo *root,
/* Adjust costing for parallelism, if used. */
if (path->parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(path);
+ double parallel_divisor = get_parallel_divisor(path->parallel_workers);
/* The CPU cost is divided among all the workers. */
cpu_run_cost /= parallel_divisor;
@@ -733,7 +736,7 @@ cost_index(IndexPath *path, PlannerInfo *root, double loop_count,
/* Adjust costing for parallelism, if used. */
if (path->path.parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(&path->path);
+ double parallel_divisor = get_parallel_divisor(path->path.parallel_workers);
path->path.rows = clamp_row_est(path->path.rows / parallel_divisor);
@@ -1014,7 +1017,7 @@ cost_bitmap_heap_scan(Path *path, PlannerInfo *root, RelOptInfo *baserel,
/* Adjust costing for parallelism, if used. */
if (path->parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(path);
+ double parallel_divisor = get_parallel_divisor(path->parallel_workers);
/* The CPU cost is divided among all the workers. */
cpu_run_cost /= parallel_divisor;
@@ -1960,7 +1963,7 @@ cost_append(AppendPath *apath)
else /* parallel-aware */
{
int i = 0;
- double parallel_divisor = get_parallel_divisor(&apath->path);
+ double parallel_divisor = get_parallel_divisor(apath->path.parallel_workers);
/* Parallel-aware Append never produces ordered output. */
Assert(apath->path.pathkeys == NIL);
@@ -1994,7 +1997,7 @@ cost_append(AppendPath *apath)
{
double subpath_parallel_divisor;
- subpath_parallel_divisor = get_parallel_divisor(subpath);
+ subpath_parallel_divisor = get_parallel_divisor(subpath->parallel_workers);
apath->path.rows += subpath->rows * (subpath_parallel_divisor /
parallel_divisor);
apath->path.total_cost += subpath->total_cost;
@@ -2517,7 +2520,7 @@ final_cost_nestloop(PlannerInfo *root, NestPath *path,
/* For partial paths, scale row estimate. */
if (path->path.parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(&path->path);
+ double parallel_divisor = get_parallel_divisor(path->path.parallel_workers);
path->path.rows =
clamp_row_est(path->path.rows / parallel_divisor);
@@ -2963,7 +2966,7 @@ final_cost_mergejoin(PlannerInfo *root, MergePath *path,
/* For partial paths, scale row estimate. */
if (path->jpath.path.parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(&path->jpath.path);
+ double parallel_divisor = get_parallel_divisor(path->jpath.path.parallel_workers);
path->jpath.path.rows =
clamp_row_est(path->jpath.path.rows / parallel_divisor);
@@ -3297,7 +3300,7 @@ initial_cost_hashjoin(PlannerInfo *root, JoinCostWorkspace *workspace,
* number, so we need to undo the division.
*/
if (parallel_hash)
- inner_path_rows_total *= get_parallel_divisor(inner_path);
+ inner_path_rows_total *= get_parallel_divisor(inner_path->parallel_workers);
/*
* Get hash table size that executor would use for inner relation.
@@ -3393,7 +3396,7 @@ final_cost_hashjoin(PlannerInfo *root, HashPath *path,
/* For partial paths, scale row estimate. */
if (path->jpath.path.parallel_workers > 0)
{
- double parallel_divisor = get_parallel_divisor(&path->jpath.path);
+ double parallel_divisor = get_parallel_divisor(path->jpath.path.parallel_workers);
path->jpath.path.rows =
clamp_row_est(path->jpath.path.rows / parallel_divisor);
@@ -4387,6 +4390,49 @@ approx_tuple_count(PlannerInfo *root, JoinPath *path, List *quals)
}
+/*
+ * set_baserel_rows_estimate
+ * Set the rows estimate for the given base relation.
+ *
+ * Rows is the estimated number of output tuples after applying
+ * restriction clauses.
+ *
+ * To support loadable plugins that monitor or modify cardinality estimation,
+ * we provide a hook variable that lets a plugin get control before and
+ * after the cardinality estimation.
+ * The hook must set rel->rows.
+ */
+void
+set_baserel_rows_estimate(PlannerInfo *root, RelOptInfo *rel)
+{
+ if (set_baserel_rows_estimate_hook)
+ (*set_baserel_rows_estimate_hook) (root, rel);
+ else
+ set_baserel_rows_estimate_standard(root, rel);
+}
+
+/*
+ * set_baserel_rows_estimate
+ * Set the rows estimate for the given base relation.
+ *
+ * Rows is the estimated number of output tuples after applying
+ * restriction clauses.
+ */
+void
+set_baserel_rows_estimate_standard(PlannerInfo *root, RelOptInfo *rel)
+{
+ double nrows;
+
+ nrows = rel->tuples *
+ clauselist_selectivity(root,
+ rel->baserestrictinfo,
+ 0,
+ JOIN_INNER,
+ NULL);
+
+ rel->rows = clamp_row_est(nrows);
+}
+
/*
* set_baserel_size_estimates
* Set the size estimates for the given base relation.
@@ -4403,19 +4449,10 @@ approx_tuple_count(PlannerInfo *root, JoinPath *path, List *quals)
void
set_baserel_size_estimates(PlannerInfo *root, RelOptInfo *rel)
{
- double nrows;
-
/* Should only be applied to base relations */
Assert(rel->relid > 0);
- nrows = rel->tuples *
- clauselist_selectivity(root,
- rel->baserestrictinfo,
- 0,
- JOIN_INNER,
- NULL);
-
- rel->rows = clamp_row_est(nrows);
+ set_baserel_rows_estimate(root, rel);
cost_qual_eval(&rel->baserestrictcost, rel->baserestrictinfo, root);
@@ -4426,13 +4463,33 @@ set_baserel_size_estimates(PlannerInfo *root, RelOptInfo *rel)
* get_parameterized_baserel_size
* Make a size estimate for a parameterized scan of a base relation.
*
+ * To support loadable plugins that monitor or modify cardinality estimation,
+ * we provide a hook variable that lets a plugin get control before and
+ * after the cardinality estimation.
+ */
+double
+get_parameterized_baserel_size(PlannerInfo *root, RelOptInfo *rel,
+ List *param_clauses)
+{
+ if (get_parameterized_baserel_size_hook)
+ return (*get_parameterized_baserel_size_hook) (root, rel,
+ param_clauses);
+ else
+ return get_parameterized_baserel_size_standard(root, rel,
+ param_clauses);
+}
+
+/*
+ * get_parameterized_baserel_size_standard
+ * Make a size estimate for a parameterized scan of a base relation.
+ *
* 'param_clauses' lists the additional join clauses to be used.
*
* set_baserel_size_estimates must have been applied already.
*/
double
-get_parameterized_baserel_size(PlannerInfo *root, RelOptInfo *rel,
- List *param_clauses)
+get_parameterized_baserel_size_standard(PlannerInfo *root, RelOptInfo *rel,
+ List *param_clauses)
{
List *allclauses;
double nrows;
@@ -4462,6 +4519,36 @@ get_parameterized_baserel_size(PlannerInfo *root, RelOptInfo *rel,
* set_joinrel_size_estimates
* Set the size estimates for the given join relation.
*
+ * To support loadable plugins that monitor or modify cardinality estimation,
+ * we provide a hook variable that lets a plugin get control before and
+ * after the cardinality estimation.
+ * The hook must set rel->rows value.
+ */
+void
+set_joinrel_size_estimates(PlannerInfo *root, RelOptInfo *rel,
+ RelOptInfo *outer_rel,
+ RelOptInfo *inner_rel,
+ SpecialJoinInfo *sjinfo,
+ List *restrictlist)
+{
+ if (set_joinrel_size_estimates_hook)
+ (*set_joinrel_size_estimates_hook) (root, rel,
+ outer_rel,
+ inner_rel,
+ sjinfo,
+ restrictlist);
+ else
+ set_joinrel_size_estimates_standard(root, rel,
+ outer_rel,
+ inner_rel,
+ sjinfo,
+ restrictlist);
+}
+
+/*
+ * set_joinrel_size_estimates_standard
+ * Set the size estimates for the given join relation.
+ *
* The rel's targetlist must have been constructed already, and a
* restriction clause list that matches the given component rels must
* be provided.
@@ -4481,11 +4568,11 @@ get_parameterized_baserel_size(PlannerInfo *root, RelOptInfo *rel,
* build_joinrel_tlist, and baserestrictcost is not used for join rels.
*/
void
-set_joinrel_size_estimates(PlannerInfo *root, RelOptInfo *rel,
- RelOptInfo *outer_rel,
- RelOptInfo *inner_rel,
- SpecialJoinInfo *sjinfo,
- List *restrictlist)
+set_joinrel_size_estimates_standard(PlannerInfo *root, RelOptInfo *rel,
+ RelOptInfo *outer_rel,
+ RelOptInfo *inner_rel,
+ SpecialJoinInfo *sjinfo,
+ List *restrictlist)
{
rel->rows = calc_joinrel_size_estimate(root,
rel,
@@ -4501,6 +4588,35 @@ set_joinrel_size_estimates(PlannerInfo *root, RelOptInfo *rel,
* get_parameterized_joinrel_size
* Make a size estimate for a parameterized scan of a join relation.
*
+ * To support loadable plugins that monitor or modify cardinality estimation,
+ * we provide a hook variable that lets a plugin get control before and
+ * after the cardinality estimation.
+ */
+double
+get_parameterized_joinrel_size(PlannerInfo *root, RelOptInfo *rel,
+ Path *outer_path,
+ Path *inner_path,
+ SpecialJoinInfo *sjinfo,
+ List *restrict_clauses)
+{
+ if (get_parameterized_joinrel_size_hook)
+ return (*get_parameterized_joinrel_size_hook) (root, rel,
+ outer_path,
+ inner_path,
+ sjinfo,
+ restrict_clauses);
+ else
+ return get_parameterized_joinrel_size_standard(root, rel,
+ outer_path,
+ inner_path,
+ sjinfo,
+ restrict_clauses);
+}
+
+/*
+ * get_parameterized_joinrel_size_standard
+ * Make a size estimate for a parameterized scan of a join relation.
+ *
* 'rel' is the joinrel under consideration.
* 'outer_path', 'inner_path' are (probably also parameterized) Paths that
* produce the relations being joined.
@@ -4513,11 +4629,11 @@ set_joinrel_size_estimates(PlannerInfo *root, RelOptInfo *rel,
* set_joinrel_size_estimates must have been applied already.
*/
double
-get_parameterized_joinrel_size(PlannerInfo *root, RelOptInfo *rel,
- Path *outer_path,
- Path *inner_path,
- SpecialJoinInfo *sjinfo,
- List *restrict_clauses)
+get_parameterized_joinrel_size_standard(PlannerInfo *root, RelOptInfo *rel,
+ Path *outer_path,
+ Path *inner_path,
+ SpecialJoinInfo *sjinfo,
+ List *restrict_clauses)
{
double nrows;
@@ -5474,14 +5590,25 @@ page_size(double tuples, int width)
return ceil(relation_byte_size(tuples, width) / BLCKSZ);
}
+bool
+IsParallelTuplesProcessing(const Plan *plan)
+{
+ if (plan->path_parallel_workers > 0 && (
+ plan->parallel_aware || nodeTag(plan) == T_HashJoin ||
+ nodeTag(plan) == T_MergeJoin ||
+ nodeTag(plan) == T_NestLoop))
+ return true;
+ return false;
+}
+
/*
* Estimate the fraction of the work that each worker will do given the
* number of workers budgeted for the path.
*/
-static double
-get_parallel_divisor(Path *path)
+double
+get_parallel_divisor(int parallel_workers)
{
- double parallel_divisor = path->parallel_workers;
+ double parallel_divisor = parallel_workers;
/*
* Early experience with parallel query suggests that when there is only
@@ -5498,7 +5625,7 @@ get_parallel_divisor(Path *path)
{
double leader_contribution;
- leader_contribution = 1.0 - (0.3 * path->parallel_workers);
+ leader_contribution = 1.0 - (0.3 * parallel_workers);
if (leader_contribution > 0)
parallel_divisor += leader_contribution;
}
diff --git a/src/backend/optimizer/plan/createplan.c b/src/backend/optimizer/plan/createplan.c
index 608d5adfed..222a7a34f3 100644
--- a/src/backend/optimizer/plan/createplan.c
+++ b/src/backend/optimizer/plan/createplan.c
@@ -70,6 +70,8 @@
#define CP_LABEL_TLIST 0x0004 /* tlist must contain sortgrouprefs */
#define CP_IGNORE_TLIST 0x0008 /* caller will replace tlist */
+/* Hook for plugins to get control in creating plan from path */
+copy_generic_path_info_hook_type copy_generic_path_info_hook = NULL;
static Plan *create_plan_recurse(PlannerInfo *root, Path *best_path,
int flags);
@@ -164,7 +166,7 @@ static Node *fix_indexqual_clause(PlannerInfo *root,
static Node *fix_indexqual_operand(Node *node, IndexOptInfo *index, int indexcol);
static List *get_switched_clauses(List *clauses, Relids outerrelids);
static List *order_qual_clauses(PlannerInfo *root, List *clauses);
-static void copy_generic_path_info(Plan *dest, Path *src);
+static void copy_generic_path_info(PlannerInfo *root, Plan *dest, Path *src);
static void copy_plan_costsize(Plan *dest, Plan *src);
static void label_sort_with_costsize(PlannerInfo *root, Sort *plan,
double limit_tuples);
@@ -1094,7 +1096,7 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path, int flags)
false)),
NULL);
- copy_generic_path_info(plan, (Path *) best_path);
+ copy_generic_path_info(root, plan, (Path *) best_path);
return plan;
}
@@ -1241,7 +1243,7 @@ create_append_plan(PlannerInfo *root, AppendPath *best_path, int flags)
plan->first_partial_plan = best_path->first_partial_path;
plan->part_prune_info = partpruneinfo;
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
/*
* If prepare_sort_from_pathkeys added sort columns, but we were told to
@@ -1287,7 +1289,7 @@ create_merge_append_plan(PlannerInfo *root, MergeAppendPath *best_path,
* prepare_sort_from_pathkeys on it before we do so on the individual
* child plans, to make cross-checking the sort info easier.
*/
- copy_generic_path_info(plan, (Path *) best_path);
+ copy_generic_path_info(root, plan, &best_path->path);
plan->targetlist = tlist;
plan->qual = NIL;
plan->lefttree = NULL;
@@ -1440,7 +1442,7 @@ create_group_result_plan(PlannerInfo *root, GroupResultPath *best_path)
plan = make_result(tlist, (Node *) quals, NULL);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
return plan;
}
@@ -1465,7 +1467,7 @@ create_project_set_plan(PlannerInfo *root, ProjectSetPath *best_path)
plan = make_project_set(tlist, subplan);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
return plan;
}
@@ -1493,7 +1495,7 @@ create_material_plan(PlannerInfo *root, MaterialPath *best_path, int flags)
plan = make_material(subplan);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
return plan;
}
@@ -1692,7 +1694,7 @@ create_unique_plan(PlannerInfo *root, UniquePath *best_path, int flags)
}
/* Copy cost data from Path to Plan */
- copy_generic_path_info(plan, &best_path->path);
+ copy_generic_path_info(root, plan, &best_path->path);
return plan;
}
@@ -1725,7 +1727,7 @@ create_gather_plan(PlannerInfo *root, GatherPath *best_path)
best_path->single_copy,
subplan);
- copy_generic_path_info(&gather_plan->plan, &best_path->path);
+ copy_generic_path_info(root, &gather_plan->plan, &best_path->path);
/* use parallel mode for parallel plans. */
root->glob->parallelModeNeeded = true;
@@ -1754,7 +1756,7 @@ create_gather_merge_plan(PlannerInfo *root, GatherMergePath *best_path)
gm_plan = makeNode(GatherMerge);
gm_plan->plan.targetlist = tlist;
gm_plan->num_workers = best_path->num_workers;
- copy_generic_path_info(&gm_plan->plan, &best_path->path);
+ copy_generic_path_info(root, &gm_plan->plan, &best_path->path);
/* Assign the rescan Param. */
gm_plan->rescan_param = assign_special_exec_param(root);
@@ -1882,7 +1884,7 @@ create_projection_plan(PlannerInfo *root, ProjectionPath *best_path, int flags)
/* We need a Result node */
plan = (Plan *) make_result(tlist, NULL, subplan);
- copy_generic_path_info(plan, (Path *) best_path);
+ copy_generic_path_info(root, plan, (Path *) best_path);
}
return plan;
@@ -1983,7 +1985,7 @@ create_sort_plan(PlannerInfo *root, SortPath *best_path, int flags)
IS_OTHER_REL(best_path->subpath->parent) ?
best_path->path.parent->relids : NULL);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2022,7 +2024,7 @@ create_group_plan(PlannerInfo *root, GroupPath *best_path)
subplan->targetlist),
subplan);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2050,7 +2052,7 @@ create_upper_unique_plan(PlannerInfo *root, UpperUniquePath *best_path, int flag
best_path->path.pathkeys,
best_path->numkeys);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2093,7 +2095,7 @@ create_agg_plan(PlannerInfo *root, AggPath *best_path)
best_path->numGroups,
subplan);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2294,7 +2296,7 @@ create_groupingsets_plan(PlannerInfo *root, GroupingSetsPath *best_path)
subplan);
/* Copy cost data from Path to Plan */
- copy_generic_path_info(&plan->plan, &best_path->path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
}
return (Plan *) plan;
@@ -2350,7 +2352,7 @@ create_minmaxagg_plan(PlannerInfo *root, MinMaxAggPath *best_path)
plan = make_result(tlist, (Node *) best_path->quals, NULL);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
/*
* During setrefs.c, we'll need to replace references to the Agg nodes
@@ -2466,7 +2468,7 @@ create_windowagg_plan(PlannerInfo *root, WindowAggPath *best_path)
wc->inRangeNullsFirst,
subplan);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2502,7 +2504,7 @@ create_setop_plan(PlannerInfo *root, SetOpPath *best_path, int flags)
best_path->firstFlag,
numGroups);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2538,7 +2540,7 @@ create_recursiveunion_plan(PlannerInfo *root, RecursiveUnionPath *best_path)
best_path->distinctList,
numGroups);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2561,7 +2563,7 @@ create_lockrows_plan(PlannerInfo *root, LockRowsPath *best_path,
plan = make_lockrows(subplan, best_path->rowMarks, best_path->epqParam);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2622,7 +2624,7 @@ create_modifytable_plan(PlannerInfo *root, ModifyTablePath *best_path)
best_path->onconflict,
best_path->epqParam);
- copy_generic_path_info(&plan->plan, &best_path->path);
+ copy_generic_path_info(root, &plan->plan, &best_path->path);
return plan;
}
@@ -2646,7 +2648,7 @@ create_limit_plan(PlannerInfo *root, LimitPath *best_path, int flags)
best_path->limitOffset,
best_path->limitCount);
- copy_generic_path_info(&plan->plan, (Path *) best_path);
+ copy_generic_path_info(root, &plan->plan, (Path *) best_path);
return plan;
}
@@ -2692,7 +2694,7 @@ create_seqscan_plan(PlannerInfo *root, Path *best_path,
scan_clauses,
scan_relid);
- copy_generic_path_info(&scan_plan->plan, best_path);
+ copy_generic_path_info(root, &scan_plan->plan, best_path);
return scan_plan;
}
@@ -2738,7 +2740,7 @@ create_samplescan_plan(PlannerInfo *root, Path *best_path,
scan_relid,
tsc);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -2916,7 +2918,7 @@ create_indexscan_plan(PlannerInfo *root,
indexorderbyops,
best_path->indexscandir);
- copy_generic_path_info(&scan_plan->plan, &best_path->path);
+ copy_generic_path_info(root, &scan_plan->plan, &best_path->path);
return scan_plan;
}
@@ -3031,7 +3033,7 @@ create_bitmap_scan_plan(PlannerInfo *root,
bitmapqualorig,
baserelid);
- copy_generic_path_info(&scan_plan->scan.plan, &best_path->path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, &best_path->path);
return scan_plan;
}
@@ -3351,7 +3353,7 @@ create_tidscan_plan(PlannerInfo *root, TidPath *best_path,
scan_relid,
tidquals);
- copy_generic_path_info(&scan_plan->scan.plan, &best_path->path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, &best_path->path);
return scan_plan;
}
@@ -3401,7 +3403,7 @@ create_subqueryscan_plan(PlannerInfo *root, SubqueryScanPath *best_path,
scan_relid,
subplan);
- copy_generic_path_info(&scan_plan->scan.plan, &best_path->path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, &best_path->path);
return scan_plan;
}
@@ -3444,7 +3446,7 @@ create_functionscan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_functionscan(tlist, scan_clauses, scan_relid,
functions, rte->funcordinality);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3487,7 +3489,7 @@ create_tablefuncscan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_tablefuncscan(tlist, scan_clauses, scan_relid,
tablefunc);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3531,7 +3533,7 @@ create_valuesscan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_valuesscan(tlist, scan_clauses, scan_relid,
values_lists);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3624,7 +3626,7 @@ create_ctescan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_ctescan(tlist, scan_clauses, scan_relid,
plan_id, cte_param_id);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3663,7 +3665,7 @@ create_namedtuplestorescan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_namedtuplestorescan(tlist, scan_clauses, scan_relid,
rte->enrname);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3701,7 +3703,7 @@ create_resultscan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_result(tlist, (Node *) scan_clauses, NULL);
- copy_generic_path_info(&scan_plan->plan, best_path);
+ copy_generic_path_info(root, &scan_plan->plan, best_path);
return scan_plan;
}
@@ -3761,7 +3763,7 @@ create_worktablescan_plan(PlannerInfo *root, Path *best_path,
scan_plan = make_worktablescan(tlist, scan_clauses, scan_relid,
cteroot->wt_param_id);
- copy_generic_path_info(&scan_plan->scan.plan, best_path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, best_path);
return scan_plan;
}
@@ -3821,7 +3823,7 @@ create_foreignscan_plan(PlannerInfo *root, ForeignPath *best_path,
outer_plan);
/* Copy cost data from Path to Plan; no need to make FDW do this */
- copy_generic_path_info(&scan_plan->scan.plan, &best_path->path);
+ copy_generic_path_info(root, &scan_plan->scan.plan, &best_path->path);
/* Copy foreign server OID; likewise, no need to make FDW do this */
scan_plan->fs_server = rel->serverid;
@@ -3955,7 +3957,7 @@ create_customscan_plan(PlannerInfo *root, CustomPath *best_path,
* Copy cost data from Path to Plan; no need to make custom-plan providers
* do this
*/
- copy_generic_path_info(&cplan->scan.plan, &best_path->path);
+ copy_generic_path_info(root, &cplan->scan.plan, &best_path->path);
/* Likewise, copy the relids that are represented by this custom scan */
cplan->custom_relids = best_path->path.parent->relids;
@@ -4057,7 +4059,7 @@ create_nestloop_plan(PlannerInfo *root,
best_path->jointype,
best_path->inner_unique);
- copy_generic_path_info(&join_plan->join.plan, &best_path->path);
+ copy_generic_path_info(root, &join_plan->join.plan, &best_path->path);
return join_plan;
}
@@ -4364,7 +4366,7 @@ create_mergejoin_plan(PlannerInfo *root,
best_path->skip_mark_restore);
/* Costs of sort and material steps are included in path cost already */
- copy_generic_path_info(&join_plan->join.plan, &best_path->jpath.path);
+ copy_generic_path_info(root, &join_plan->join.plan, &best_path->jpath.path);
return join_plan;
}
@@ -4510,7 +4512,7 @@ create_hashjoin_plan(PlannerInfo *root,
best_path->jpath.jointype,
best_path->jpath.inner_unique);
- copy_generic_path_info(&join_plan->join.plan, &best_path->jpath.path);
+ copy_generic_path_info(root, &join_plan->join.plan, &best_path->jpath.path);
return join_plan;
}
@@ -5010,7 +5012,7 @@ order_qual_clauses(PlannerInfo *root, List *clauses)
* Also copy the parallel-related flags, which the executor *will* use.
*/
static void
-copy_generic_path_info(Plan *dest, Path *src)
+copy_generic_path_info(PlannerInfo *root, Plan *dest, Path *src)
{
dest->startup_cost = src->startup_cost;
dest->total_cost = src->total_cost;
@@ -5018,6 +5020,9 @@ copy_generic_path_info(Plan *dest, Path *src)
dest->plan_width = src->pathtarget->width;
dest->parallel_aware = src->parallel_aware;
dest->parallel_safe = src->parallel_safe;
+
+ if (copy_generic_path_info_hook)
+ (*copy_generic_path_info_hook) (root, dest, src);
}
/*
diff --git a/src/backend/optimizer/util/relnode.c b/src/backend/optimizer/util/relnode.c
index 6054bd2b53..1c8434174e 100644
--- a/src/backend/optimizer/util/relnode.c
+++ b/src/backend/optimizer/util/relnode.c
@@ -1233,6 +1233,7 @@ find_childrel_parents(PlannerInfo *root, RelOptInfo *rel)
}
+set_parampathinfo_postinit_hook_type parampathinfo_postinit_hook = NULL;
/*
* get_baserel_parampathinfo
* Get the ParamPathInfo for a parameterized path for a base relation,
@@ -1301,6 +1302,10 @@ get_baserel_parampathinfo(PlannerInfo *root, RelOptInfo *baserel,
ppi->ppi_req_outer = required_outer;
ppi->ppi_rows = rows;
ppi->ppi_clauses = pclauses;
+
+ if (parampathinfo_postinit_hook)
+ (*parampathinfo_postinit_hook)(ppi);
+
baserel->ppilist = lappend(baserel->ppilist, ppi);
return ppi;
@@ -1526,6 +1531,10 @@ get_joinrel_parampathinfo(PlannerInfo *root, RelOptInfo *joinrel,
ppi->ppi_req_outer = required_outer;
ppi->ppi_rows = rows;
ppi->ppi_clauses = NIL;
+
+ if (parampathinfo_postinit_hook)
+ (*parampathinfo_postinit_hook)(ppi);
+
joinrel->ppilist = lappend(joinrel->ppilist, ppi);
return ppi;
diff --git a/src/include/commands/explain.h b/src/include/commands/explain.h
index f8b79ec120..b5eda01907 100644
--- a/src/include/commands/explain.h
+++ b/src/include/commands/explain.h
@@ -62,6 +62,12 @@ extern PGDLLIMPORT ExplainOneQuery_hook_type ExplainOneQuery_hook;
typedef const char *(*explain_get_index_name_hook_type) (Oid indexId);
extern PGDLLIMPORT explain_get_index_name_hook_type explain_get_index_name_hook;
+/* Hook for plugins to get control in ExplainOnePlan() */
+typedef void (*ExplainOnePlan_hook_type) (PlannedStmt *plannedstmt, IntoClause *into,
+ ExplainState *es, const char *queryString,
+ ParamListInfo params, const instr_time *planduration,
+ QueryEnvironment *queryEnv);
+extern PGDLLIMPORT ExplainOnePlan_hook_type ExplainOnePlan_hook;
extern void ExplainQuery(ParseState *pstate, ExplainStmt *stmt, const char *queryString,
ParamListInfo params, QueryEnvironment *queryEnv, DestReceiver *dest);
diff --git a/src/include/nodes/pathnodes.h b/src/include/nodes/pathnodes.h
index 441e64eca9..484bca379a 100644
--- a/src/include/nodes/pathnodes.h
+++ b/src/include/nodes/pathnodes.h
@@ -710,6 +710,10 @@ typedef struct RelOptInfo
Relids top_parent_relids; /* Relids of topmost parents (if "other"
* rel) */
+ /* For Adaptive optimization DEBUG purposes */
+ double predicted_cardinality;
+ int fss_hash;
+
/* used for partitioned relations */
PartitionScheme part_scheme; /* Partitioning scheme. */
int nparts; /* number of partitions */
@@ -1069,6 +1073,10 @@ typedef struct ParamPathInfo
Relids ppi_req_outer; /* rels supplying parameters used by path */
double ppi_rows; /* estimated number of result tuples */
List *ppi_clauses; /* join clauses available from outer rels */
+
+ /* AQO DEBUG purposes */
+ double predicted_ppi_rows;
+ double fss_ppi_hash;
} ParamPathInfo;
diff --git a/src/include/nodes/plannodes.h b/src/include/nodes/plannodes.h
index 70f8b8e22b..d188c2596a 100644
--- a/src/include/nodes/plannodes.h
+++ b/src/include/nodes/plannodes.h
@@ -144,6 +144,19 @@ typedef struct Plan
List *initPlan; /* Init Plan nodes (un-correlated expr
* subselects) */
+ /*
+ * information for adaptive query optimization
+ */
+ bool had_path;
+ List *path_clauses;
+ List *path_relids;
+ JoinType path_jointype;
+ int path_parallel_workers;
+ bool was_parametrized;
+ /* For Adaptive optimization DEBUG purposes */
+ double predicted_cardinality;
+ int fss_hash;
+
/*
* Information for management of parameter-change-driven rescanning
*
diff --git a/src/include/optimizer/cost.h b/src/include/optimizer/cost.h
index 9b6bdbc518..2a0caa6474 100644
--- a/src/include/optimizer/cost.h
+++ b/src/include/optimizer/cost.h
@@ -39,6 +39,33 @@ typedef enum
} ConstraintExclusionType;
+/* Hook for plugins to get control of cardinality estimation */
+typedef void (*set_baserel_rows_estimate_hook_type) (PlannerInfo *root,
+ RelOptInfo *rel);
+extern PGDLLIMPORT set_baserel_rows_estimate_hook_type
+ set_baserel_rows_estimate_hook;
+typedef double (*get_parameterized_baserel_size_hook_type) (PlannerInfo *root,
+ RelOptInfo *rel,
+ List *param_clauses);
+extern PGDLLIMPORT get_parameterized_baserel_size_hook_type
+ get_parameterized_baserel_size_hook;
+typedef double (*get_parameterized_joinrel_size_hook_type) (PlannerInfo *root,
+ RelOptInfo *rel,
+ Path *outer_path,
+ Path *inner_path,
+ SpecialJoinInfo *sjinfo,
+ List *restrict_clauses);
+extern PGDLLIMPORT get_parameterized_joinrel_size_hook_type
+ get_parameterized_joinrel_size_hook;
+typedef void (*set_joinrel_size_estimates_hook_type) (PlannerInfo *root,
+ RelOptInfo *rel,
+ RelOptInfo *outer_rel,
+ RelOptInfo *inner_rel,
+ SpecialJoinInfo *sjinfo,
+ List *restrictlist);
+extern PGDLLIMPORT set_joinrel_size_estimates_hook_type
+ set_joinrel_size_estimates_hook;
+
/*
* prototypes for costsize.c
* routines to compute costs and sizes
@@ -171,10 +198,21 @@ extern void compute_semi_anti_join_factors(PlannerInfo *root,
SpecialJoinInfo *sjinfo,
List *restrictlist,
SemiAntiJoinFactors *semifactors);
+extern void set_baserel_rows_estimate(PlannerInfo *root, RelOptInfo *rel);
+extern void set_baserel_rows_estimate_standard(PlannerInfo *root, RelOptInfo *rel);
extern void set_baserel_size_estimates(PlannerInfo *root, RelOptInfo *rel);
extern double get_parameterized_baserel_size(PlannerInfo *root,
RelOptInfo *rel,
List *param_clauses);
+extern double get_parameterized_baserel_size_standard(PlannerInfo *root,
+ RelOptInfo *rel,
+ List *param_clauses);
+extern double get_parameterized_joinrel_size_standard(PlannerInfo *root,
+ RelOptInfo *rel,