Commit Graph

9 Commits (5b05d44a69b275e8c3f96e027e3f7c3cfaedd9dc)

Author SHA1 Message Date
naisila bcabf9175d Upgrade uncrustify to from 0.68.1 to 0.82.0 2025-12-07 23:54:28 +03:00
Mehmet YILMAZ 9e42f3f2c4
Add PG 18Beta1 compatibility (Build + RuleUtils) (#7981)
This PR provides successful build against PG18Beta1. RuleUtils PR was
reviewed separately: #8010

## PG 18Beta1–related changes for building Citus


### TupleDesc / Attr layout

**What changed in PG:** Postgres consolidated the
`TupleDescData.attrs[]` array into a more compact representation. Direct
field access (tupdesc->attrs[i]) was replaced by the new
`TupleDescAttr()` API.

**Citus adaptation:** Everywhere we previously used
`tupdesc->attrs[...]`, we now call `TupleDescAttr(tupdesc, idx)` (or our
own `Attr()` macro) under a compatibility guard.
*
5983a4cffc

General Logic:

* Use `Attr(...)` in places where `columnar_version_compat.h` is
included. This avoids the need to sprinkle `#if PG_VERSION_NUM` guards
around each attribute access.

* Use `TupleDescAttr(tupdesc, i)` when the relevant PostgreSQL header is
already included and the additional macro indirection is unnecessary.


### Collation‐aware `LIKE`

**What changed in PG:** The `textlike` operator now requires an explicit
collation, to avoid ambiguous‐collation errors. Core code switched from
`DirectFunctionCall2(textlike, ...)` to
`DirectFunctionCall2Coll(textlike, DEFAULT_COLLATION_OID, ...)`.

**Citus adaptation:** In `remote_commands.c` and any other LIKE call, we
now use `DirectFunctionCall2Coll(textlike, DEFAULT_COLLATION_OID, ...)`
and `#include <utils/pg_collation.h>`.

*
85b7efa1cd

### Columnar storage API

* Adapt `columnar_relation_set_new_filelocator` (and related init
routines) for PG 18’s revised SMGR and storage-initialization hooks.
* Pull in the new headers (`explain_format.h`,
`columnar_version_compat.h`) so the columnar module compiles cleanly
against PG 18.
- heap_modify_tuple + heap_inplace_update only exist on PG < 18; on PG18
the in-place helper was removed upstream


-
a07e03fd8f

### OpenSSL / TLS integration

**What changed in PG:** Moved from the legacy `SSL_library_init()` to
`OPENSSL_init_ssl(OPENSSL_INIT_LOAD_CONFIG, NULL)`, updated certificate
API calls (`X509_getm_notBefore`, `X509_getm_notAfter`), and
standardized on `TLS_method()`.

**Citus adaptation:** We now `#include <openssl/opensslv.h>` and use
`#if OPENSSL_VERSION_NUMBER >= 0x10100000L` to choose between`
OPENSSL_init_ssl()` or `SSL_library_init()`, and wrap`
X509_gmtime_adj()` calls around the new accessor functions.

*
6c66b7443c


### Adapt `ExtractColumns()` to the new PG-18 `expandRTE()` signature

PostgreSQL 18
80feb727c8
added a fourth argument of type `VarReturningType` to `expandRTE()`, so
calls that used the old 7-parameter form no longer compile. This patch:

* Wraps the `expandRTE(...)` call in a `#if PG_VERSION_NUM >= 180000`
guard.
* On PG 18+ passes the new `VAR_RETURNING_DEFAULT` argument before
`location`.
* On PG 15–17 continues to call the original 7-arg form.
* Adds the necessary includes (`parser/parse_relation.h` for `expandRTE`
and `VarReturningType`, and `pg_version_constants.h` for
`PG_VERSION_NUM`).



### Adapt `ExecutorStart`/`ExecutorRun` hooks to PG-18’s new signatures

PostgreSQL 18
525392d572
changed the signatures of the executor hooks:

* `ExecutorStart_hook` now returns `bool` instead of `void`, and
* `ExecutorRun_hook` drops its old `run_once` argument.

This patch preserves Citus’s existing hook logic by:

1. **Adding two adapter functions** under `#if PG_VERSION_NUM >=
PG_VERSION_18`:

   * `citus_executor_start_adapter(QueryDesc *queryDesc, int eflags)`
Calls the old `CitusExecutorStart(queryDesc, eflags)` and then returns
`true` to satisfy the new hook’s `bool` return type.
* `citus_executor_run_adapter(QueryDesc *queryDesc, ScanDirection
direction, uint64 count)`
Calls the old `CitusExecutorRun(queryDesc, direction, count, true)`
(passing `true` for the dropped `run_once` argument), and returns
`void`.

2. **Installing the adapters** in `_PG_init()` instead of the original
hooks when building against PG 18+:

   ```c
   #if PG_VERSION_NUM >= PG_VERSION_18
       ExecutorStart_hook = citus_executor_start_adapter;
       ExecutorRun_hook   = citus_executor_run_adapter;
   #else
       ExecutorStart_hook = CitusExecutorStart;
       ExecutorRun_hook   = CitusExecutorRun;
   #endif
   ```
   
### Adapt to PG-18’s removal of the “run\_once” flag from
ExecutorRun/PortalRun

PostgreSQL commit
[[3eea7a0](3eea7a0c97)
rationalized the executor’s parallelism logic by moving the “execute a
plan only once” check into `ExecutePlan()` itself and dropping the old
`bool run_once` argument from the public APIs:

```diff
- void ExecutorRun(QueryDesc *queryDesc,
-                  ScanDirection direction,
-                  uint64 count,
-                  bool run_once);
+ void ExecutorRun(QueryDesc *queryDesc,
+                  ScanDirection direction,
+                  uint64 count);
```

(and similarly for `PortalRun()`).

To stay compatible across PG 15–18, Citus now:

1. **Updates all internal calls** to `ExecutorRun(...)` and
`PortalRun(...)`:

* On PG 18+, use the new three-argument form (`ExecutorRun(qd, dir,
count)`).
* On PG 15–17, keep the old four-arg form (`ExecutorRun(qd, dir, count,
true)`) under a `#if PG_VERSION_NUM < 180000` guard.

2. **Guards the dispatcher hooks** via the adapter functions (from the
earlier patch) so that Citus’s executor hooks continue to work under
both the old and new signatures.


### Adapt to PG-18’s shortened PortalRun signature

PostgreSQL 18’s refactoring (see commit
[3eea7a0](3eea7a0c97))
also removed the old run_once and alternate‐dest arguments from the
public PortalRun() API. The signature changed from:



```diff
- bool PortalRun(Portal portal,
-                long count,
-                bool isTopLevel,
-                bool run_once,
-                DestReceiver *dest,
-                DestReceiver *altdest,
-                QueryCompletion *qc);
+ bool PortalRun(Portal portal,
+                long count,
+                bool isTopLevel,
+                DestReceiver *dest,
+                DestReceiver *altdest,
+                QueryCompletion *qc);
```

To support both versions in Citus, we:

1. **Version-guard each call** to `PortalRun()`:

   * **On PG 18+** invoke the new 6-argument form.
* **On PG 15–17** fall back to the legacy 7-argument form, passing
`true` for `run_once`.
   
### Add support for PG-18’s new `plansource` argument in
`PortalDefineQuery`**

PostgreSQL 18 extended the `PortalDefineQuery` API to carry a
`CachedPlanSource *plansource` pointer so that the portal machinery can
track cached‐plan invalidation (as introduced alongside deferred-locking
in commit
525392d572.
To remain compatible across PG 15–18, Citus now wraps its calls under a
version guard:

```diff
-   PortalDefineQuery(portal, NULL, sql, commandTag, plantree_list, NULL);
+#if PG_VERSION_NUM >= 180000
+   /* PG 18+: seven-arg signature (adds plansource) */
+   PortalDefineQuery(
+       portal,
+       NULL,            /* no prepared-stmt name */
+       sql,             /* the query text */
+       commandTag,      /* the CommandTag */
+       plantree_list,   /* List of PlannedStmt* */
+       NULL,            /* no CachedPlan */
+       NULL             /* no CachedPlanSource */
+   );
+#else
+   /* PG 15–17: six-arg signature */
+   PortalDefineQuery(
+       portal,
+       NULL,            /* no prepared-stmt name */
+       sql,             /* the query text */
+       commandTag,      /* the CommandTag */
+       plantree_list,   /* List of PlannedStmt* */
+       NULL             /* no CachedPlan */
+   );
+#endif
```


### Adapt ExecInitRangeTable() calls to PG-18’s new signature

PostgreSQL commit
[cbc127917e04a978a788b8bc9d35a70244396d5b](cbc127917e)
overhauled the planner API for range‐table initialization:

**PG 18+**: added a fourth `Bitmapset *unpruned_relids` argument to
support deferred partition pruning

In Citus’s `create_estate_for_relation()` (in `columnar_metadata.c`), we
now wrap the call in a compile‐time guard so that the code compiles
correctly on all supported PostgreSQL versions:

```
/* Prepare permission info on PG 16+ */
#if PG_VERSION_NUM >= PG_VERSION_16
    List *perminfos = NIL;
    addRTEPermissionInfo(&perminfos, rte);
#else
    List *perminfos = NIL;  /* unused on PG 15 */
#endif

/* Initialize the range table, with the right signature for each PG version */
#if PG_VERSION_NUM >= PG_VERSION_18
    /* PG 18+: four‐arg signature (adds unpruned_relids) */
    ExecInitRangeTable(
        estate,
        list_make1(rte),
        perminfos,
        NULL        /* unpruned_relids: not used by columnar */
    );
#elif PG_VERSION_NUM >= PG_VERSION_16
    /* PG 16–17: three‐arg signature (permInfos) */
    ExecInitRangeTable(
        estate,
        list_make1(rte),
        perminfos
    );
#else
    /* PG 15: two‐arg signature */
    ExecInitRangeTable(
        estate,
        list_make1(rte)
    );
#endif

estate->es_output_cid = GetCurrentCommandId(true);
```

### Adapt `pgstat_report_vacuum()` to PG-18’s new timestamp argument

PostgreSQL commit
[[30a6ed0ce4bb18212ec38cdb537ea4b43bc99b83](30a6ed0ce4)
extended the `pgstat_report_vacuum()` API by adding a `TimestampTz
start_time` parameter at the end so that the VACUUM statistics collector
can record when the operation began:

```diff
/* PG ≤17: four-arg signature */
- void pgstat_report_vacuum(Oid tableoid,
-                           bool shared,
-                           double num_live_tuples,
-                           double num_dead_tuples);
+/* PG ≥18: five-arg signature adds a start_time */
+ void pgstat_report_vacuum(Oid tableoid,
+                           bool shared,
+                           double num_live_tuples,
+                           double num_dead_tuples,
+                           TimestampTz start_time);
```

To support both versions, we now wrap the call in `columnar_tableam.c`
with a version guard, supplying `GetCurrentTimestamp()` for PG-18+:

```c
#if PG_VERSION_NUM >= 180000
    /* PG 18+: include start_timestamp */
    pgstat_report_vacuum(
        RelationGetRelid(rel),
        rel->rd_rel->relisshared,
        Max(new_live_tuples, 0),  /* live tuples */
        0,                        /* dead tuples */
        GetCurrentTimestamp()     /* start time */
    );
#else
    /* PG 15–17: original signature */
    pgstat_report_vacuum(
        RelationGetRelid(rel),
        rel->rd_rel->relisshared,
        Max(new_live_tuples, 0),  /* live tuples */
        0                         /* dead tuples */
    );
#endif
```


### Adapt `ExecuteTaskPlan()` to PG-18’s expanded `CreateQueryDesc()`
signature

PostgreSQL 18 changed `CreateQueryDesc()` from an eight-argument to a
nine-argument call by inserting a `CachedPlan *cplan` parameter
immediately after the `PlannedStmt *plannedstmt` argument (see commit
525392d572).
To remain compatible with PG 15–17, Citus now wraps its invocation in
`local_executor.c` with a version guard:

```diff
-    /* PG15–17: eight-arg CreateQueryDesc without cached plan */
-    QueryDesc *queryDesc = CreateQueryDesc(
-        taskPlan,           /* PlannedStmt *plannedstmt */
-        queryString,        /* const char *sourceText */
-        GetActiveSnapshot(),/* Snapshot snapshot */
-        InvalidSnapshot,    /* Snapshot crosscheck_snapshot */
-        destReceiver,       /* DestReceiver *dest */
-        paramListInfo,      /* ParamListInfo params */
-        queryEnv,           /* QueryEnvironment *queryEnv */
-        0                   /* int instrument_options */
-    );
+#if PG_VERSION_NUM >= 180000
+    /* PG18+: nine-arg CreateQueryDesc with a CachedPlan slot */
+    QueryDesc *queryDesc = CreateQueryDesc(
+        taskPlan,           /* PlannedStmt *plannedstmt */
+        NULL,               /* CachedPlan *cplan (none) */
+        queryString,        /* const char *sourceText */
+        GetActiveSnapshot(),/* Snapshot snapshot */
+        InvalidSnapshot,    /* Snapshot crosscheck_snapshot */
+        destReceiver,       /* DestReceiver *dest */
+        paramListInfo,      /* ParamListInfo params */
+        queryEnv,           /* QueryEnvironment *queryEnv */
+        0                   /* int instrument_options */
+    );
+#else
+    /* PG15–17: eight-arg CreateQueryDesc without cached plan */
+    QueryDesc *queryDesc = CreateQueryDesc(
+        taskPlan,           /* PlannedStmt *plannedstmt */
+        queryString,        /* const char *sourceText */
+        GetActiveSnapshot(),/* Snapshot snapshot */
+        InvalidSnapshot,    /* Snapshot crosscheck_snapshot */
+        destReceiver,       /* DestReceiver *dest */
+        paramListInfo,      /* ParamListInfo params */
+        queryEnv,           /* QueryEnvironment *queryEnv */
+        0                   /* int instrument_options */
+    );
+#endif
```



### Adapt `RelationGetPrimaryKeyIndex()` to PG-18’s new “deferrable\_ok”
flag

PostgreSQL commit
14e87ffa5c
added a new Boolean `deferrable_ok` parameter to
`RelationGetPrimaryKeyIndex()` so that the lock manager can defer
unique‐constraint locks when requested. The API changed from:

```c
RelationGetPrimaryKeyIndex(Relation relation)
```

to:

```c
RelationGetPrimaryKeyIndex(Relation relation, bool deferrable_ok)
 ```
                
```diff
diff --git a/src/backend/distributed/metadata/node_metadata.c
b/src/backend/distributed/metadata/node_metadata.c
index e3a1b2c..f4d5e6f 100644
--- a/src/backend/distributed/metadata/node_metadata.c
+++ b/src/backend/distributed/metadata/node_metadata.c
@@ -2965,8 +2965,18 @@
     */
- Relation replicaIndex =
index_open(RelationGetPrimaryKeyIndex(pgDistNode),
-                                      AccessShareLock);
+    #if PG_VERSION_NUM >= PG_VERSION_18
+        /* PG 18+ adds a bool "deferrable_ok" parameter */
+        Relation replicaIndex =
+            index_open(
+                RelationGetPrimaryKeyIndex(pgDistNode, false),
+                AccessShareLock);
+    #else
+        Relation replicaIndex =
+            index_open(
+                RelationGetPrimaryKeyIndex(pgDistNode),
+                AccessShareLock);
+    #endif

     ScanKeyInit(&scanKey[0], Anum_pg_dist_node_nodename,
BTEqualStrategyNumber, F_TEXTEQ, CStringGetTextDatum(nodeName));

```
  
  ```diff
  diff --git a/src/backend/distributed/operations/node_protocol.c b/src/backend/distributed/operations/node_protocol.c
index e3a1b2c..f4d5e6f 100644
--- a/src/backend/distributed/operations/node_protocol.c
+++ b/src/backend/distributed/operations/node_protocol.c
@@ -746,7 +746,12 @@
     if (!OidIsValid(idxoid))
     {
-        idxoid = RelationGetPrimaryKeyIndex(rel);
+        /* Determine the index OID of the primary key (PG18 adds a second parameter) */
+#if PG_VERSION_NUM >= PG_VERSION_18
+        idxoid = RelationGetPrimaryKeyIndex(rel, false);
+#else
+        idxoid = RelationGetPrimaryKeyIndex(rel);
+#endif
     }

     return idxoid;

```
  
Because Citus has always taken the lock immediately—just as the old
two-arg call did—we pass `false` to keep that same immediate-lock
behavior. Passing `true` would switch to deferred locking, which we
don’t want.



### Adapt `ExplainOnePlan()` to PG-18’s expanded API

PostgreSQL 18 extended
525392d572
the `ExplainOnePlan()` function to carry the `CachedPlan *` and
`CachedPlanSource *` pointers plus an explicit `query_index`, letting
the EXPLAIN machinery track plan‐source invalidation. The old signature:

```c
/* PG ≤17 */
void
ExplainOnePlan(PlannedStmt *plannedstmt,
               IntoClause *into,
               struct ExplainState *es,
               const char *queryString,
               ParamListInfo params,
               QueryEnvironment *queryEnv,
               const instr_time *planduration,
               const BufferUsage *bufusage);
```

became, in PG 18:

```c
/* PG ≥18 */
void
ExplainOnePlan(PlannedStmt *plannedstmt,
               CachedPlan   *cplan,
               CachedPlanSource *plansource,
               int            query_index,
               IntoClause    *into,
               struct ExplainState *es,
               const char   *queryString,
               ParamListInfo params,
               QueryEnvironment *queryEnv,
               const instr_time *planduration,
               const BufferUsage *bufusage,
               const MemoryContextCounters *mem_counters);
```

To compile under both versions, Citus now wraps each call in
`multi_explain.c` with:

```c
#if PG_VERSION_NUM >= PG_VERSION_18
    /* PG 18+: pass NULL for the new cached‐plan fields and zero for query_index */
    ExplainOnePlan(
        plan,         /* PlannedStmt *plannedstmt */
        NULL,         /* CachedPlan *cplan */
        NULL,         /* CachedPlanSource *plansource */
        0,            /* query_index */
        into,         /* IntoClause *into */
        es,           /* ExplainState *es */
        queryString,  /* const char *queryString */
        params,       /* ParamListInfo params */
        NULL,         /* QueryEnvironment *queryEnv */
        &planduration,/* const instr_time *planduration */
        (es->buffers ? &bufusage : NULL),
        (es->memory  ? &mem_counters : NULL)
    );
#elif PG_VERSION_NUM >= PG_VERSION_17
    /* PG 17: same as before, plus passing mem_counters if enabled */
    ExplainOnePlan(
        plan,
        into,
        es,
        queryString,
        params,
        queryEnv,
        &planduration,
        (es->buffers ? &bufusage : NULL),
        (es->memory ? &mem_counters : NULL)
    );
#else
    /* PG 15–16: original seven-arg form */
    ExplainOnePlan(
        plan,
        into,
        es,
        queryString,
        params,
        queryEnv,
        &planduration,
        (es->buffers ? &bufusage : NULL)
    );
#endif
```


### Adapt to the unified “index interpretation” API in PG 18 (commit
a8025f544854)

PostgreSQL commit
a8025f5448
generalized the old btree‐specific operator‐interpretation API into a
single “index interpretation” interface:

* **Renamed type**:
  `OpBtreeInterpretation` → `OpIndexInterpretation`
* **Renamed function**:
`get_op_btree_interpretation(opno)` →
`get_op_index_interpretation(opno)`
* **Unified field**:
  Each interpretation now carries `cmptype` instead of `strategy`.

To build cleanly on PG 18 while still supporting PG 15–17, Citus’s
shard‐pruning code now wraps these changes:

```c
#include "pg_version_constants.h"

#if PG_VERSION_NUM >= PG_VERSION_18
/* On PG 18+ the btree‐only APIs vanished; alias them to the new generic versions */
typedef OpIndexInterpretation OpBtreeInterpretation;
#define get_op_btree_interpretation(opno)  get_op_index_interpretation(opno)
#define ROWCOMPARE_NE  COMPARE_NE
#endif

/* … later, when checking an interpretation … */
OpBtreeInterpretation *interp =
    (OpBtreeInterpretation *) lfirst(cell);

#if PG_VERSION_NUM >= PG_VERSION_18
    /* use cmptype on PG 18+ */
    if (interp->cmptype == ROWCOMPARE_NE)
#else
    /* use strategy on PG 15–17 */
    if (interp->strategy == ROWCOMPARE_NE)
#endif
{
    /* … */
}
```


### Adapt `create_foreignscan_path()` for PG-18’s revised signature

PostgreSQL commit
e222534679
reordered and removed a couple of parameters in the FDW‐path builder:

* **PG 15–17 signature (11 args)**

  ```c
  create_foreignscan_path(PlannerInfo   *root,
                          RelOptInfo    *rel,
                          PathTarget    *target,
                          double         rows,
                          Cost           startup_cost,
                          Cost           total_cost,
                          List          *pathkeys,
                          Relids         required_outer,
                          Path          *fdw_outerpath,
                          List          *fdw_restrictinfo,
                          List          *fdw_private);
  ```
* **PG 18+ signature (9 args)**

  ```c
  create_foreignscan_path(PlannerInfo   *root,
                          RelOptInfo    *rel,
                          PathTarget    *target,
                          double         rows,
                          int            disabled_nodes,
                          Cost           startup_cost,
                          Cost           total_cost,
                          Relids         required_outer,
                          Path          *fdw_outerpath,
                          List          *fdw_private);
  ```

To support both, Citus now defines a compatibility macro in
`pg_version_compat.h`:

```c
#include "nodes/bitmapset.h"   /* for Relids */
#include "nodes/pg_list.h"     /* for List */
#include "optimizer/pathnode.h" /* for create_foreignscan_path() */

#if PG_VERSION_NUM >= PG_VERSION_18

/* PG18+: drop pathkeys & fdw_restrictinfo, add disabled_nodes */
#define create_foreignscan_path_compat(a, b, c, d, e, f, g, h, i, j, k) \
    create_foreignscan_path(                                            \
        (a),          /* root */                                       \
        (b),          /* rel */                                        \
        (c),          /* target */                                     \
        (d),          /* rows */                                       \
        (0),          /* disabled_nodes (unused by Citus) */           \
        (e),          /* startup_cost */                              \
        (f),          /* total_cost */                                \
        (g),          /* required_outer */                            \
        (h),          /* fdw_outerpath */                             \
        (k)           /* fdw_private */                               \
    )

#else

/* PG15–17: original signature */
#define create_foreignscan_path_compat(a, b, c, d, e, f, g, h, i, j, k) \
    create_foreignscan_path(                                            \
        (a), (b), (c), (d),                                            \
        (e), (f),                                                      \
        (g), (h), (i), (j), (k)                                        \
    )
#endif
```

Now every call to `create_foreignscan_path_compat(...)`—even in tests
like `fake_fdw.c`—automatically picks the correct argument list for
PG 15 through PG 18.



### Drop the obsolete bitmap‐scan hooks on PG 18+

PostgreSQL commit
c3953226a0
cleaned up the `TableAmRoutine` API by removing the two bitmap‐scan
callback slots:

* `scan_bitmap_next_block`
* `scan_bitmap_next_tuple`

Since those hook‐slots no longer exist in PG 18, Citus now wraps their
NULL‐initialization in a `#if PG_VERSION_NUM < PG_VERSION_18` guard. On
PG 15–17 we still explicitly set them to `NULL` (to satisfy the old
struct layout), and on PG 18+ we omit them entirely:

```c

#if PG_VERSION_NUM < PG_VERSION_18
    /* PG 15–17 only: these fields were removed upstream in PG 18 */
    .scan_bitmap_next_block = NULL,
    .scan_bitmap_next_tuple = NULL,
#endif


```


### Adapt `vac_update_relstats()` invocation to PG-18’s new
“all\_frozen” argument

PostgreSQL commit
99f8f3fbbc
extended the `vac_update_relstats()` API by inserting a
`num_all_frozen_pages` parameter between the existing
`num_all_visible_pages` and `hasindex` arguments:

```diff
- /* PG ≤17: */
- void
- vac_update_relstats(Relation relation,
-                    BlockNumber num_pages,
-                    double     num_tuples,
-                    BlockNumber num_all_visible_pages,
-                    bool       hasindex,
-                    TransactionId frozenxid,
-                    MultiXactId  minmulti,
-                    bool      *frozenxid_updated,
-                    bool      *minmulti_updated,
-                    bool       in_outer_xact);
+ /* PG ≥18: adds num_all_frozen_pages */
+ void
+ vac_update_relstats(Relation    relation,
+                    BlockNumber num_pages,
+                    double      num_tuples,
+                    BlockNumber num_all_visible_pages,
+                    BlockNumber num_all_frozen_pages,
+                    bool        hasindex,
+                    TransactionId frozenxid,
+                    MultiXactId  minmulti,
+                    bool      *frozenxid_updated,
+                    bool      *minmulti_updated,
+                    bool       in_outer_xact);
```

To compile cleanly on both PG 15–17 and PG 18+, Citus wraps its call in
a version guard and supplies a zero placeholder for the new field:

```c
#if PG_VERSION_NUM >= 180000
    /* PG 18+: supply explicit “all_frozen” count */
    vac_update_relstats(
        rel,
        new_rel_pages,
        new_live_tuples,
        new_rel_allvisible,    /* allvisible */
        0,                     /* all_frozen */
        nindexes > 0,
        newRelFrozenXid,
        newRelminMxid,
        &frozenxid_updated,
        &minmulti_updated,
        false                  /* in_outer_xact */
    );
#else
    /* PG 15–17: original signature */
    vac_update_relstats(
        rel,
        new_rel_pages,
        new_live_tuples,
        new_rel_allvisible,
        nindexes > 0,
        newRelFrozenXid,
        newRelminMxid,
        &frozenxid_updated,
        &minmulti_updated,
        false                  /* in_outer_xact */
    );
#endif
```

**Why all_frozen = 0?**
Columnar storage never embeds transaction IDs in its pages, so it never
needs to track “all‐frozen” pages the way a heap does. Setting both
allvisible and allfrozen to zero simply tells Postgres “there are no
pages with the visibility or frozen‐status bits set,” matching our
existing behavior.

This change ensures Citus’s VACUUM‐statistic updates work unmodified
across all supported Postgres versions.
2025-07-16 15:30:41 +03:00
Nils Dijk 0620c8f9a6
Sort includes (#7326)
This change adds a script to programatically group all includes in a
specific order. The script was used as a one time invocation to group
and sort all includes throught our formatted code. The grouping is as
follows:

 - System includes (eg. `#include<...>`)
 - Postgres.h (eg. `#include "postgres.h"`)
- Toplevel imports from postgres, not contained in a directory (eg.
`#include "miscadmin.h"`)
 - General postgres includes (eg . `#include "nodes/..."`)
- Toplevel citus includes, not contained in a directory (eg. `#include
"citus_verion.h"`)
 - Columnar includes (eg. `#include "columnar/..."`)
 - Distributed includes (eg. `#include "distributed/..."`)

Because it is quite hard to understand the difference between toplevel
citus includes and toplevel postgres includes it hardcodes the list of
toplevel citus includes. In the same manner it assumes anything not
prefixed with `columnar/` or `distributed/` as a postgres include.

The sorting/grouping is enforced by CI. Since we do so with our own
script there are not changes required in our uncrustify configuration.
2023-11-23 18:19:54 +01:00
Naisila Puka 42d956888d
PG16 compatibility: Resolve compilation issues (#7005)
This PR provides successful compilation against PG16Beta2. It does some
necessary refactoring to prepare for full support of version 16, in
https://github.com/citusdata/citus/pull/6952 .

Change RelFileNode to RelFileNumber or RelFileLocator 
Relevant PG commit
b0a55e43299c4ea2a9a8c757f9c26352407d0ccc

new header for varatt.h 
Relevant PG commit:
d952373a987bad331c0e499463159dd142ced1ef

drop support for Abs, use fabs 
Relevant PG commit
357cfefb09115292cfb98d504199e6df8201c957

tuplesort PGcommit: d37aa3d35832afde94e100c4d2a9618b3eb76472 
Relevant PG commit:
d37aa3d35832afde94e100c4d2a9618b3eb76472

Fix vacuum in columnar 
Relevant PG commit:
4ce3afb82ecfbf64d4f6247e725004e1da30f47c
older one:
b6074846cebc33d752f1d9a66e5a9932f21ad177

Add alloc_flags to pg_clean_ascii 
Relevant PG commit:
45b1a67a0fcb3f1588df596431871de4c93cb76f

Merge GetNumConfigOptions() into get_guc_variables() 
Relevant PG commit:
3057465acfbea2f3dd7a914a1478064022c6eecd

Minor PG refactor PG_FUNCNAME_MACRO __func__ 
Relevant PG commit
320f92b744b44f961e5d56f5f21de003e8027a7f

Pass NULL context to stringToQualifiedNameList, typeStringToTypeName 
The pre-PG16 error behaviour for the following
stringToQualifiedNameList & typeStringToTypeName
was ereport(ERROR, ...)
Now with PG16 we have this context input. We preserve the same behaviour
by passing a NULL context, because of the following:
(copy paste comment from PG16)
If "context" isn't an ErrorSaveContext node, this behaves as
errstart(ERROR, domain), and the errsave() macro ends up acting
exactly like ereport(ERROR, ...).
Relevant PG commit
858e776c84f48841e7e16fba7b690b76e54f3675

Use RangeVarCallbackMaintainsTable instead of RangeVarCallbackOwnsTable 
Relevant PG commit:
60684dd834a222fefedd49b19d1f0a6189c1632e

FIX THIS: Not implemented grant-level control of role inheritance 
see PG commit
e3ce2de09d814f8770b2e3b3c152b7671bcdb83f

Make Scan node abstract 
PG commit:
8c73c11a0d39049de2c1f400d8765a0eb21f5228

Change in Var representations, get_relids_in_jointree 
PG commit
2489d76c4906f4461a364ca8ad7e0751ead8aa0d

Deadlock detection changes because SHM_QUEUE is removed 
Relevant PG Commit:
d137cb52cb7fd44a3f24f3c750fbf7924a4e9532

TU_UpdateIndexes 
Relevant PG commit
19d8e2308bc51ec4ab993ce90077342c915dd116

Use object_ownercheck and object_aclcheck functions 
Relevant PG commits:
afbfc02983f86c4d71825efa6befd547fe81a926
c727f511bd7bf3c58063737bcf7a8f331346f253

Rework Permission Info for successful compilation 
Relevant PG commits:
postgres/postgres@a61b1f7
postgres/postgres@b803b7d
---------

Co-authored-by: onderkalaci <onderkalaci@gmail.com>
2023-07-21 14:32:37 +03:00
Benjamin Satzger a35a15a513
Distribute custom aggregates with multiple arguments (#4047)
Enable custom aggregates with multiple parameters to be executed on workers.

#2921 introduces distributed execution of custom aggregates. One of the limitations of this feature is that only aggregate functions with a single aggregation parameter can be pushed to worker nodes. Aim of this change is to remove that limitation and support handling of multi-parameter aggregates.

Resolves: #3997
See also: #2921
2020-07-24 15:16:00 -07:00
Philip Dubé 11b968bc30 Add runtime type checking to AGGREGATE_CUSTOM_COMBINE helper functions 2020-03-11 17:20:30 +00:00
Philip Dubé e9bbdb8f31 Fix handling of empty intermediate results when distributing custom aggregates 2019-12-23 17:27:52 +00:00
Jelte Fennema 1d8dde232f
Automatically convert useless declarations using regex replace (#3181)
* Add declaration removal to CI

* Convert declarations
2019-11-21 13:47:29 +01:00
Philip Dubé 495c0f5117 Phase 1 implementation of custom aggregates
Phase 1 seeks to implement minimal infrastructure, so does not include:
	- dynamic generation of support aggregates to handle multiple arguments
	- configuration methods to direct aggregation strategy,
		or mark an aggregate's serialize/deserialize as safe to operate across nodes

Aggregates can be distributed when:
	- they have a single argument
	- they have a combinefunc
	- their transition type is not a pseudotype
2019-11-14 19:01:24 +00:00