On Wed, Mar 25, 2020 at 09:16:46AM +0530, Amit Kapila wrote:
> I think by mistake you have re-introduced this chunk of code. We
> don't need this as we have done it in the caller.
Yes, sorry.
I used too much of git-am and git-rebase to make sure I didn't lose your
changes and instead reintroduced them.
On Wed, Mar 25, 2020 at 02:16:35PM +0900, Masahiko Sawada wrote:
> > > Won't the latest patch by Justin will fix this as he has updated the
> > > block count after count_nondeletable_pages? Apart from that, I feel
> >
> > The issue is if the error happens *during* count_nondeletable_pages().
> > We don't want it to say "truncating relation to 100 blocks".
>
> Right.
>
> > > the first call to update_vacuum_error_cbarg in lazy_truncate_heap
> > > should have input parameter as vacrelstats->nonempty_pages instead of
> > > new_rel_pages to indicate the remaining pages after truncation?
> >
> > Yea, I think that addresses the issue.
Attached patch addressing these.
--
Justin
>From b3e112c3d02982b4c050a43c53e47a868879c561 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Thu, 12 Dec 2019 20:54:37 -0600
Subject: [PATCH v33 1/3] Introduce vacuum errcontext to display additional
information.
The additional information displayed will be block number for error
occurring while processing heap and index name for error occurring
while processing the index.
This will help us in diagnosing the problems that occur during a vacuum.
For ex. due to corruption (either caused by bad hardware or by some bug)
if we get some error while vacuuming, it can help us identify the block
in heap and or additional index information.
It sets up an error context callback to display additional information
with the error. During different phases of vacuum (heap scan, heap
vacuum, index vacuum, index clean up, heap truncate), we update the error
context callback to display appropriate information. We can extend it to
a bit more granular level like adding the phases for FSM operations or for
prefetching the blocks while truncating. However, I felt that it requires
adding many more error callback function calls and can make the code a bit
complex, so left those for now.
Author: Justin Pryzby, with few changes by Amit Kapila
Reviewed-by: Alvaro Herrera, Amit Kapila, Andres Freund, Michael Paquier
and Sawada Masahiko
Discussion: https://www.postgresql.org/message-id/20191120210600.gc30...@telsasoft.com
---
src/backend/access/heap/vacuumlazy.c | 250 ++++++++++++++++++++++++---
src/tools/pgindent/typedefs.list | 1 +
2 files changed, 226 insertions(+), 25 deletions(-)
diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index 03c43efc32..c68d5952c8 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -144,6 +144,17 @@
*/
#define ParallelVacuumIsActive(lps) PointerIsValid(lps)
+/* Phases of vacuum during which we report error context. */
+typedef enum
+{
+ VACUUM_ERRCB_PHASE_UNKNOWN,
+ VACUUM_ERRCB_PHASE_SCAN_HEAP,
+ VACUUM_ERRCB_PHASE_VACUUM_INDEX,
+ VACUUM_ERRCB_PHASE_VACUUM_HEAP,
+ VACUUM_ERRCB_PHASE_INDEX_CLEANUP,
+ VACUUM_ERRCB_PHASE_TRUNCATE
+} VacErrCbPhase;
+
/*
* LVDeadTuples stores the dead tuple TIDs collected during the heap scan.
* This is allocated in the DSM segment in parallel mode and in local memory
@@ -270,6 +281,8 @@ typedef struct LVParallelState
typedef struct LVRelStats
{
+ char *relnamespace;
+ char *relname;
/* useindex = true means two-pass strategy; false means one-pass */
bool useindex;
/* Overall statistics about rel */
@@ -290,8 +303,12 @@ typedef struct LVRelStats
int num_index_scans;
TransactionId latestRemovedXid;
bool lock_waiter_detected;
-} LVRelStats;
+ /* Used for error callback */
+ char *indname;
+ BlockNumber blkno; /* used only for heap operations */
+ VacErrCbPhase phase;
+} LVRelStats;
/* A few variables that don't seem worth passing around as parameters */
static int elevel = -1;
@@ -314,10 +331,10 @@ static void lazy_vacuum_all_indexes(Relation onerel, Relation *Irel,
LVRelStats *vacrelstats, LVParallelState *lps,
int nindexes);
static void lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
- LVDeadTuples *dead_tuples, double reltuples);
+ LVDeadTuples *dead_tuples, double reltuples, LVRelStats *vacrelstats);
static void lazy_cleanup_index(Relation indrel,
IndexBulkDeleteResult **stats,
- double reltuples, bool estimated_count);
+ double reltuples, bool estimated_count, LVRelStats *vacrelstats);
static int lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
int tupindex, LVRelStats *vacrelstats, Buffer *vmbuffer);
static bool should_attempt_truncation(VacuumParams *params,
@@ -337,13 +354,13 @@ static void lazy_parallel_vacuum_indexes(Relation *Irel, IndexBulkDeleteResult *
int nindexes);
static void parallel_vacuum_index(Relation *Irel, IndexBulkDeleteResult **stats,
LVShared *lvshared, LVDeadTuples *dead_tuples,
- int nindexes);
+ int nindexes, LVRelStats *vacrelstats);
static void vacuum_indexes_leader(Relation *Irel, IndexBulkDeleteResult **stats,
LVRelStats *vacrelstats, LVParallelState *lps,
int nindexes);
static void vacuum_one_index(Relation indrel, IndexBulkDeleteResult **stats,
LVShared *lvshared, LVSharedIndStats *shared_indstats,
- LVDeadTuples *dead_tuples);
+ LVDeadTuples *dead_tuples, LVRelStats *vacrelstats);
static void lazy_cleanup_all_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
LVRelStats *vacrelstats, LVParallelState *lps,
int nindexes);
@@ -361,6 +378,10 @@ static void end_parallel_vacuum(Relation *Irel, IndexBulkDeleteResult **stats,
LVParallelState *lps, int nindexes);
static LVSharedIndStats *get_indstats(LVShared *lvshared, int n);
static bool skip_parallel_vacuum_index(Relation indrel, LVShared *lvshared);
+static void vacuum_error_callback(void *arg);
+static void update_vacuum_error_cbarg(LVRelStats *errcbarg, int phase,
+ BlockNumber blkno, char *indname,
+ bool free_oldindname);
/*
@@ -394,6 +415,7 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
double new_live_tuples;
TransactionId new_frozen_xid;
MultiXactId new_min_multi;
+ ErrorContextCallback errcallback;
Assert(params != NULL);
Assert(params->index_cleanup != VACOPT_TERNARY_DEFAULT);
@@ -460,6 +482,10 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
vacrelstats = (LVRelStats *) palloc0(sizeof(LVRelStats));
+ vacrelstats->relnamespace = get_namespace_name(RelationGetNamespace(onerel));
+ vacrelstats->relname = pstrdup(RelationGetRelationName(onerel));
+ vacrelstats->indname = NULL;
+ vacrelstats->phase = VACUUM_ERRCB_PHASE_UNKNOWN;
vacrelstats->old_rel_pages = onerel->rd_rel->relpages;
vacrelstats->old_live_tuples = onerel->rd_rel->reltuples;
vacrelstats->num_index_scans = 0;
@@ -471,6 +497,12 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
vacrelstats->useindex = (nindexes > 0 &&
params->index_cleanup == VACOPT_TERNARY_ENABLED);
+ /* Setup error traceback support for ereport() */
+ errcallback.callback = vacuum_error_callback;
+ errcallback.arg = vacrelstats;
+ errcallback.previous = error_context_stack;
+ error_context_stack = &errcallback;
+
/* Do the vacuuming */
lazy_scan_heap(onerel, params, vacrelstats, Irel, nindexes, aggressive);
@@ -499,6 +531,9 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
if (should_attempt_truncation(params, vacrelstats))
lazy_truncate_heap(onerel, vacrelstats);
+ /* Pop the error context stack */
+ error_context_stack = errcallback.previous;
+
/* Report that we are now doing final cleanup */
pgstat_progress_update_param(PROGRESS_VACUUM_PHASE,
PROGRESS_VACUUM_PHASE_FINAL_CLEANUP);
@@ -699,7 +734,6 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
BlockNumber nblocks,
blkno;
HeapTupleData tuple;
- char *relname;
TransactionId relfrozenxid = onerel->rd_rel->relfrozenxid;
TransactionId relminmxid = onerel->rd_rel->relminmxid;
BlockNumber empty_pages,
@@ -724,20 +758,20 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
PROGRESS_VACUUM_MAX_DEAD_TUPLES
};
int64 initprog_val[3];
+ ErrorContextCallback errcallback;
pg_rusage_init(&ru0);
- relname = RelationGetRelationName(onerel);
if (aggressive)
ereport(elevel,
(errmsg("aggressively vacuuming \"%s.%s\"",
- get_namespace_name(RelationGetNamespace(onerel)),
- relname)));
+ vacrelstats->relnamespace,
+ vacrelstats->relname)));
else
ereport(elevel,
(errmsg("vacuuming \"%s.%s\"",
- get_namespace_name(RelationGetNamespace(onerel)),
- relname)));
+ vacrelstats->relnamespace,
+ vacrelstats->relname)));
empty_pages = vacuumed_pages = 0;
next_fsm_block_to_vacuum = (BlockNumber) 0;
@@ -893,6 +927,9 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
pgstat_progress_update_param(PROGRESS_VACUUM_HEAP_BLKS_SCANNED, blkno);
+ update_vacuum_error_cbarg(vacrelstats, VACUUM_ERRCB_PHASE_SCAN_HEAP,
+ blkno, NULL, false);
+
if (blkno == next_unskippable_block)
{
/* Time to advance next_unskippable_block */
@@ -1534,7 +1571,7 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
&& VM_ALL_VISIBLE(onerel, blkno, &vmbuffer))
{
elog(WARNING, "page is not marked all-visible but visibility map bit is set in relation \"%s\" page %u",
- relname, blkno);
+ vacrelstats->relname, blkno);
visibilitymap_clear(onerel, blkno, vmbuffer,
VISIBILITYMAP_VALID_BITS);
}
@@ -1555,7 +1592,7 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
else if (PageIsAllVisible(page) && has_dead_tuples)
{
elog(WARNING, "page containing dead tuples is marked as all-visible in relation \"%s\" page %u",
- relname, blkno);
+ vacrelstats->relname, blkno);
PageClearAllVisible(page);
MarkBufferDirty(buf);
visibilitymap_clear(onerel, blkno, vmbuffer,
@@ -1744,7 +1781,7 @@ lazy_vacuum_all_indexes(Relation onerel, Relation *Irel,
for (idx = 0; idx < nindexes; idx++)
lazy_vacuum_index(Irel[idx], &stats[idx], vacrelstats->dead_tuples,
- vacrelstats->old_live_tuples);
+ vacrelstats->old_live_tuples, vacrelstats);
}
/* Increase and report the number of index scans */
@@ -1772,11 +1809,17 @@ lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats)
int npages;
PGRUsage ru0;
Buffer vmbuffer = InvalidBuffer;
+ LVRelStats olderrcbarg;
/* Report that we are now vacuuming the heap */
pgstat_progress_update_param(PROGRESS_VACUUM_PHASE,
PROGRESS_VACUUM_PHASE_VACUUM_HEAP);
+ /* Update error traceback information */
+ olderrcbarg = *vacrelstats;
+ update_vacuum_error_cbarg(vacrelstats, VACUUM_ERRCB_PHASE_VACUUM_HEAP,
+ InvalidBlockNumber, NULL, false);
+
pg_rusage_init(&ru0);
npages = 0;
@@ -1791,6 +1834,7 @@ lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats)
vacuum_delay_point();
tblk = ItemPointerGetBlockNumber(&vacrelstats->dead_tuples->itemptrs[tupindex]);
+ vacrelstats->blkno = tblk;
buf = ReadBufferExtended(onerel, MAIN_FORKNUM, tblk, RBM_NORMAL,
vac_strategy);
if (!ConditionalLockBufferForCleanup(buf))
@@ -1822,6 +1866,13 @@ lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats)
RelationGetRelationName(onerel),
tupindex, npages),
errdetail_internal("%s", pg_rusage_show(&ru0))));
+
+ /* Revert back to the old phase information for error traceback */
+ update_vacuum_error_cbarg(vacrelstats,
+ olderrcbarg.phase,
+ olderrcbarg.blkno,
+ olderrcbarg.indname,
+ true);
}
/*
@@ -1844,9 +1895,15 @@ lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
int uncnt = 0;
TransactionId visibility_cutoff_xid;
bool all_frozen;
+ LVRelStats olderrcbarg;
pgstat_progress_update_param(PROGRESS_VACUUM_HEAP_BLKS_VACUUMED, blkno);
+ /* Update error traceback information */
+ olderrcbarg = *vacrelstats;
+ update_vacuum_error_cbarg(vacrelstats, VACUUM_ERRCB_PHASE_VACUUM_HEAP,
+ blkno, NULL, false);
+
START_CRIT_SECTION();
for (; tupindex < dead_tuples->num_tuples; tupindex++)
@@ -1923,6 +1980,12 @@ lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
*vmbuffer, visibility_cutoff_xid, flags);
}
+ /* Revert back to the old phase information for error traceback */
+ update_vacuum_error_cbarg(vacrelstats,
+ olderrcbarg.phase,
+ olderrcbarg.blkno,
+ olderrcbarg.indname,
+ true);
return tupindex;
}
@@ -2083,7 +2146,7 @@ lazy_parallel_vacuum_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
* indexes in the case where no workers are launched.
*/
parallel_vacuum_index(Irel, stats, lps->lvshared,
- vacrelstats->dead_tuples, nindexes);
+ vacrelstats->dead_tuples, nindexes, vacrelstats);
/* Wait for all vacuum workers to finish */
WaitForParallelWorkersToFinish(lps->pcxt);
@@ -2106,7 +2169,7 @@ lazy_parallel_vacuum_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
static void
parallel_vacuum_index(Relation *Irel, IndexBulkDeleteResult **stats,
LVShared *lvshared, LVDeadTuples *dead_tuples,
- int nindexes)
+ int nindexes, LVRelStats *vacrelstats)
{
/*
* Increment the active worker count if we are able to launch any worker.
@@ -2140,7 +2203,7 @@ parallel_vacuum_index(Relation *Irel, IndexBulkDeleteResult **stats,
/* Do vacuum or cleanup of the index */
vacuum_one_index(Irel[idx], &(stats[idx]), lvshared, shared_indstats,
- dead_tuples);
+ dead_tuples, vacrelstats);
}
/*
@@ -2180,7 +2243,8 @@ vacuum_indexes_leader(Relation *Irel, IndexBulkDeleteResult **stats,
if (shared_indstats == NULL ||
skip_parallel_vacuum_index(Irel[i], lps->lvshared))
vacuum_one_index(Irel[i], &(stats[i]), lps->lvshared,
- shared_indstats, vacrelstats->dead_tuples);
+ shared_indstats, vacrelstats->dead_tuples,
+ vacrelstats);
}
/*
@@ -2200,7 +2264,7 @@ vacuum_indexes_leader(Relation *Irel, IndexBulkDeleteResult **stats,
static void
vacuum_one_index(Relation indrel, IndexBulkDeleteResult **stats,
LVShared *lvshared, LVSharedIndStats *shared_indstats,
- LVDeadTuples *dead_tuples)
+ LVDeadTuples *dead_tuples, LVRelStats *vacrelstats)
{
IndexBulkDeleteResult *bulkdelete_res = NULL;
@@ -2220,10 +2284,10 @@ vacuum_one_index(Relation indrel, IndexBulkDeleteResult **stats,
/* Do vacuum or cleanup of the index */
if (lvshared->for_cleanup)
lazy_cleanup_index(indrel, stats, lvshared->reltuples,
- lvshared->estimated_count);
+ lvshared->estimated_count, vacrelstats);
else
lazy_vacuum_index(indrel, stats, dead_tuples,
- lvshared->reltuples);
+ lvshared->reltuples, vacrelstats);
/*
* Copy the index bulk-deletion result returned from ambulkdelete and
@@ -2298,7 +2362,8 @@ lazy_cleanup_all_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
for (idx = 0; idx < nindexes; idx++)
lazy_cleanup_index(Irel[idx], &stats[idx],
vacrelstats->new_rel_tuples,
- vacrelstats->tupcount_pages < vacrelstats->rel_pages);
+ vacrelstats->tupcount_pages < vacrelstats->rel_pages,
+ vacrelstats);
}
}
@@ -2313,11 +2378,12 @@ lazy_cleanup_all_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
*/
static void
lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
- LVDeadTuples *dead_tuples, double reltuples)
+ LVDeadTuples *dead_tuples, double reltuples, LVRelStats *vacrelstats)
{
IndexVacuumInfo ivinfo;
const char *msg;
PGRUsage ru0;
+ LVRelStats olderrcbarg;
pg_rusage_init(&ru0);
@@ -2329,6 +2395,14 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
ivinfo.num_heap_tuples = reltuples;
ivinfo.strategy = vac_strategy;
+ /* Update error traceback information */
+ olderrcbarg = *vacrelstats;
+ update_vacuum_error_cbarg(vacrelstats,
+ VACUUM_ERRCB_PHASE_VACUUM_INDEX,
+ InvalidBlockNumber,
+ RelationGetRelationName(indrel),
+ false);
+
/* Do bulk deletion */
*stats = index_bulk_delete(&ivinfo, *stats,
lazy_tid_reaped, (void *) dead_tuples);
@@ -2343,6 +2417,13 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
RelationGetRelationName(indrel),
dead_tuples->num_tuples),
errdetail_internal("%s", pg_rusage_show(&ru0))));
+
+ /* Revert back to the old phase information for error traceback */
+ update_vacuum_error_cbarg(vacrelstats,
+ olderrcbarg.phase,
+ olderrcbarg.blkno,
+ olderrcbarg.indname,
+ true);
}
/*
@@ -2354,11 +2435,12 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
static void
lazy_cleanup_index(Relation indrel,
IndexBulkDeleteResult **stats,
- double reltuples, bool estimated_count)
+ double reltuples, bool estimated_count, LVRelStats *vacrelstats)
{
IndexVacuumInfo ivinfo;
const char *msg;
PGRUsage ru0;
+ LVRelStats olderrcbarg;
pg_rusage_init(&ru0);
@@ -2371,6 +2453,14 @@ lazy_cleanup_index(Relation indrel,
ivinfo.num_heap_tuples = reltuples;
ivinfo.strategy = vac_strategy;
+ /* Update error traceback information */
+ olderrcbarg = *vacrelstats;
+ update_vacuum_error_cbarg(vacrelstats,
+ VACUUM_ERRCB_PHASE_INDEX_CLEANUP,
+ InvalidBlockNumber,
+ RelationGetRelationName(indrel),
+ false);
+
*stats = index_vacuum_cleanup(&ivinfo, *stats);
if (!(*stats))
@@ -2392,6 +2482,13 @@ lazy_cleanup_index(Relation indrel,
(*stats)->tuples_removed,
(*stats)->pages_deleted, (*stats)->pages_free,
pg_rusage_show(&ru0))));
+
+ /* Revert back to the old phase information for error traceback */
+ update_vacuum_error_cbarg(vacrelstats,
+ olderrcbarg.phase,
+ olderrcbarg.blkno,
+ olderrcbarg.indname,
+ true);
}
/*
@@ -2440,6 +2537,7 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
BlockNumber old_rel_pages = vacrelstats->rel_pages;
BlockNumber new_rel_pages;
int lock_retry;
+ LVRelStats olderrcbarg;
/* Report that we are now truncating */
pgstat_progress_update_param(PROGRESS_VACUUM_PHASE,
@@ -2510,6 +2608,11 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
return;
}
+ /* Update error traceback information */
+ olderrcbarg = *vacrelstats;
+ update_vacuum_error_cbarg(vacrelstats, VACUUM_ERRCB_PHASE_TRUNCATE,
+ vacrelstats->nonempty_pages, NULL, false);
+
/*
* Scan backwards from the end to verify that the end pages actually
* contain no tuples. This is *necessary*, not optional, because
@@ -2517,6 +2620,7 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
* were vacuuming.
*/
new_rel_pages = count_nondeletable_pages(onerel, vacrelstats);
+ vacrelstats->blkno = new_rel_pages;
if (new_rel_pages >= old_rel_pages)
{
@@ -2530,6 +2634,13 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
*/
RelationTruncate(onerel, new_rel_pages);
+ /* Revert back to the old phase information for error traceback */
+ update_vacuum_error_cbarg(vacrelstats,
+ olderrcbarg.phase,
+ olderrcbarg.blkno,
+ olderrcbarg.indname,
+ true);
+
/*
* We can release the exclusive lock as soon as we have truncated.
* Other backends can't safely access the relation until they have
@@ -3320,6 +3431,8 @@ parallel_vacuum_main(dsm_segment *seg, shm_toc *toc)
int nindexes;
char *sharedquery;
IndexBulkDeleteResult **stats;
+ LVRelStats vacrelstats;
+ ErrorContextCallback errcallback;
lvshared = (LVShared *) shm_toc_lookup(toc, PARALLEL_VACUUM_KEY_SHARED,
false);
@@ -3369,10 +3482,97 @@ parallel_vacuum_main(dsm_segment *seg, shm_toc *toc)
if (lvshared->maintenance_work_mem_worker > 0)
maintenance_work_mem = lvshared->maintenance_work_mem_worker;
+ /*
+ * Initialize vacrelstats for use as error callback arg by parallel
+ * worker.
+ */
+ vacrelstats.relnamespace = get_namespace_name(RelationGetNamespace(onerel));
+ vacrelstats.relname = pstrdup(RelationGetRelationName(onerel));
+ vacrelstats.indname = NULL;
+ vacrelstats.phase = VACUUM_ERRCB_PHASE_UNKNOWN; /* Not yet processing */
+
+ /* Setup error traceback support for ereport() */
+ errcallback.callback = vacuum_error_callback;
+ errcallback.arg = &vacrelstats;
+ errcallback.previous = error_context_stack;
+ error_context_stack = &errcallback;
+
/* Process indexes to perform vacuum/cleanup */
- parallel_vacuum_index(indrels, stats, lvshared, dead_tuples, nindexes);
+ parallel_vacuum_index(indrels, stats, lvshared, dead_tuples, nindexes,
+ &vacrelstats);
+
+ /* Pop the error context stack */
+ error_context_stack = errcallback.previous;
vac_close_indexes(nindexes, indrels, RowExclusiveLock);
table_close(onerel, ShareUpdateExclusiveLock);
pfree(stats);
}
+
+/*
+ * Error context callback for errors occurring during vacuum.
+ */
+static void
+vacuum_error_callback(void *arg)
+{
+ LVRelStats *cbarg = arg;
+
+ switch (cbarg->phase)
+ {
+ case VACUUM_ERRCB_PHASE_SCAN_HEAP:
+ if (BlockNumberIsValid(cbarg->blkno))
+ errcontext("while scanning block %u of relation \"%s.%s\"",
+ cbarg->blkno, cbarg->relnamespace, cbarg->relname);
+ break;
+
+ case VACUUM_ERRCB_PHASE_VACUUM_HEAP:
+ if (BlockNumberIsValid(cbarg->blkno))
+ errcontext("while vacuuming block %u of relation \"%s.%s\"",
+ cbarg->blkno, cbarg->relnamespace, cbarg->relname);
+ break;
+
+ case VACUUM_ERRCB_PHASE_VACUUM_INDEX:
+ errcontext("while vacuuming index \"%s\" of relation \"%s.%s\"",
+ cbarg->indname, cbarg->relnamespace, cbarg->relname);
+ break;
+
+ case VACUUM_ERRCB_PHASE_INDEX_CLEANUP:
+ errcontext("while cleaning up index \"%s\" of relation \"%s.%s\"",
+ cbarg->indname, cbarg->relnamespace, cbarg->relname);
+ break;
+
+ case VACUUM_ERRCB_PHASE_TRUNCATE:
+ if (BlockNumberIsValid(cbarg->blkno))
+ errcontext("while truncating relation \"%s.%s\" to %u blocks",
+ cbarg->relnamespace, cbarg->relname, cbarg->blkno);
+ break;
+
+ case VACUUM_ERRCB_PHASE_UNKNOWN:
+ default:
+ return; /* do nothing; the cbarg may not be
+ * initialized */
+ }
+}
+
+/*
+ * Update vacuum error callback for the current phase, block, and index.
+ *
+ * free_oldindname is true if the previous "indname" should be freed. It must be
+ * false if the caller has copied the old LVRelStats, to avoid keeping a
+ * pointer to a freed allocation. In which case, the caller should call again
+ * with free_oldindname as true to avoid a leak.
+ */
+static void
+update_vacuum_error_cbarg(LVRelStats *errcbarg, int phase, BlockNumber blkno,
+ char *indname, bool free_oldindname)
+{
+ errcbarg->blkno = blkno;
+ errcbarg->phase = phase;
+
+ /* Free index name from any previous phase */
+ if (free_oldindname && errcbarg->indname)
+ pfree(errcbarg->indname);
+
+ /* For index phases, save the name of the current index for the callback */
+ errcbarg->indname = indname ? pstrdup(indname) : NULL;
+}
diff --git a/src/tools/pgindent/typedefs.list b/src/tools/pgindent/typedefs.list
index ca2d9ec8fb..518393344b 100644
--- a/src/tools/pgindent/typedefs.list
+++ b/src/tools/pgindent/typedefs.list
@@ -2565,6 +2565,7 @@ UserMapping
UserOpts
VacAttrStats
VacAttrStatsP
+VacErrCbPhase
VacOptTernaryValue
VacuumParams
VacuumRelation
--
2.17.0
>From 049cb1fa3ec275829238e2605091525e2d0f4041 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Wed, 4 Mar 2020 12:28:50 -0600
Subject: [PATCH v33 2/3] Drop reltuples
---
src/backend/access/heap/vacuumlazy.c | 24 +++++++++++-------------
1 file changed, 11 insertions(+), 13 deletions(-)
diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index c68d5952c8..f784ec2a8b 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -331,10 +331,10 @@ static void lazy_vacuum_all_indexes(Relation onerel, Relation *Irel,
LVRelStats *vacrelstats, LVParallelState *lps,
int nindexes);
static void lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
- LVDeadTuples *dead_tuples, double reltuples, LVRelStats *vacrelstats);
+ LVDeadTuples *dead_tuples, LVRelStats *vacrelstats);
static void lazy_cleanup_index(Relation indrel,
IndexBulkDeleteResult **stats,
- double reltuples, bool estimated_count, LVRelStats *vacrelstats);
+ LVRelStats *vacrelstats);
static int lazy_vacuum_page(Relation onerel, BlockNumber blkno, Buffer buffer,
int tupindex, LVRelStats *vacrelstats, Buffer *vmbuffer);
static bool should_attempt_truncation(VacuumParams *params,
@@ -1781,7 +1781,7 @@ lazy_vacuum_all_indexes(Relation onerel, Relation *Irel,
for (idx = 0; idx < nindexes; idx++)
lazy_vacuum_index(Irel[idx], &stats[idx], vacrelstats->dead_tuples,
- vacrelstats->old_live_tuples, vacrelstats);
+ vacrelstats);
}
/* Increase and report the number of index scans */
@@ -2283,11 +2283,10 @@ vacuum_one_index(Relation indrel, IndexBulkDeleteResult **stats,
/* Do vacuum or cleanup of the index */
if (lvshared->for_cleanup)
- lazy_cleanup_index(indrel, stats, lvshared->reltuples,
- lvshared->estimated_count, vacrelstats);
+ lazy_cleanup_index(indrel, stats, vacrelstats);
else
lazy_vacuum_index(indrel, stats, dead_tuples,
- lvshared->reltuples, vacrelstats);
+ vacrelstats);
/*
* Copy the index bulk-deletion result returned from ambulkdelete and
@@ -2361,8 +2360,6 @@ lazy_cleanup_all_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
{
for (idx = 0; idx < nindexes; idx++)
lazy_cleanup_index(Irel[idx], &stats[idx],
- vacrelstats->new_rel_tuples,
- vacrelstats->tupcount_pages < vacrelstats->rel_pages,
vacrelstats);
}
}
@@ -2378,7 +2375,7 @@ lazy_cleanup_all_indexes(Relation *Irel, IndexBulkDeleteResult **stats,
*/
static void
lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
- LVDeadTuples *dead_tuples, double reltuples, LVRelStats *vacrelstats)
+ LVDeadTuples *dead_tuples, LVRelStats *vacrelstats)
{
IndexVacuumInfo ivinfo;
const char *msg;
@@ -2392,7 +2389,7 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
ivinfo.report_progress = false;
ivinfo.estimated_count = true;
ivinfo.message_level = elevel;
- ivinfo.num_heap_tuples = reltuples;
+ ivinfo.num_heap_tuples = vacrelstats->old_live_tuples;
ivinfo.strategy = vac_strategy;
/* Update error traceback information */
@@ -2435,7 +2432,7 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
static void
lazy_cleanup_index(Relation indrel,
IndexBulkDeleteResult **stats,
- double reltuples, bool estimated_count, LVRelStats *vacrelstats)
+ LVRelStats *vacrelstats)
{
IndexVacuumInfo ivinfo;
const char *msg;
@@ -2447,10 +2444,11 @@ lazy_cleanup_index(Relation indrel,
ivinfo.index = indrel;
ivinfo.analyze_only = false;
ivinfo.report_progress = false;
- ivinfo.estimated_count = estimated_count;
+ ivinfo.estimated_count = (bool)(vacrelstats->tupcount_pages <
+ vacrelstats->rel_pages);
ivinfo.message_level = elevel;
- ivinfo.num_heap_tuples = reltuples;
+ ivinfo.num_heap_tuples = vacrelstats->new_rel_tuples;
ivinfo.strategy = vac_strategy;
/* Update error traceback information */
--
2.17.0
>From fa48068ea937f83c7a1cdd23ae603d9bb89be484 Mon Sep 17 00:00:00 2001
From: Justin Pryzby <pryz...@telsasoft.com>
Date: Wed, 26 Feb 2020 19:22:55 -0600
Subject: [PATCH v33 3/3] Avoid some calls to RelationGetRelationName
---
src/backend/access/heap/vacuumlazy.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff --git a/src/backend/access/heap/vacuumlazy.c b/src/backend/access/heap/vacuumlazy.c
index f784ec2a8b..6f0c558e8a 100644
--- a/src/backend/access/heap/vacuumlazy.c
+++ b/src/backend/access/heap/vacuumlazy.c
@@ -634,8 +634,8 @@ heap_vacuum_rel(Relation onerel, VacuumParams *params,
}
appendStringInfo(&buf, msgfmt,
get_database_name(MyDatabaseId),
- get_namespace_name(RelationGetNamespace(onerel)),
- RelationGetRelationName(onerel),
+ vacrelstats->relnamespace,
+ vacrelstats->relname,
vacrelstats->num_index_scans);
appendStringInfo(&buf, _("pages: %u removed, %u remain, %u skipped due to pins, %u skipped frozen\n"),
vacrelstats->pages_removed,
@@ -807,7 +807,7 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
if (params->nworkers > 0)
ereport(WARNING,
(errmsg("disabling parallel option of vacuum on \"%s\" --- cannot vacuum temporary tables in parallel",
- RelationGetRelationName(onerel))));
+ vacrelstats->relname)));
}
else
lps = begin_parallel_vacuum(RelationGetRelid(onerel), Irel,
@@ -1702,7 +1702,7 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
if (vacuumed_pages)
ereport(elevel,
(errmsg("\"%s\": removed %.0f row versions in %u pages",
- RelationGetRelationName(onerel),
+ vacrelstats->relname,
tups_vacuumed, vacuumed_pages)));
/*
@@ -1731,7 +1731,7 @@ lazy_scan_heap(Relation onerel, VacuumParams *params, LVRelStats *vacrelstats,
ereport(elevel,
(errmsg("\"%s\": found %.0f removable, %.0f nonremovable row versions in %u out of %u pages",
- RelationGetRelationName(onerel),
+ vacrelstats->relname,
tups_vacuumed, num_tuples,
vacrelstats->scanned_pages, nblocks),
errdetail_internal("%s", buf.data)));
@@ -1863,7 +1863,7 @@ lazy_vacuum_heap(Relation onerel, LVRelStats *vacrelstats)
ereport(elevel,
(errmsg("\"%s\": removed %d row versions in %d pages",
- RelationGetRelationName(onerel),
+ vacrelstats->relname,
tupindex, npages),
errdetail_internal("%s", pg_rusage_show(&ru0))));
@@ -2411,7 +2411,7 @@ lazy_vacuum_index(Relation indrel, IndexBulkDeleteResult **stats,
ereport(elevel,
(errmsg(msg,
- RelationGetRelationName(indrel),
+ vacrelstats->relname,
dead_tuples->num_tuples),
errdetail_internal("%s", pg_rusage_show(&ru0))));
@@ -2580,7 +2580,7 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
vacrelstats->lock_waiter_detected = true;
ereport(elevel,
(errmsg("\"%s\": stopping truncate due to conflicting lock request",
- RelationGetRelationName(onerel))));
+ vacrelstats->relname)));
return;
}
@@ -2658,7 +2658,7 @@ lazy_truncate_heap(Relation onerel, LVRelStats *vacrelstats)
ereport(elevel,
(errmsg("\"%s\": truncated %u to %u pages",
- RelationGetRelationName(onerel),
+ vacrelstats->relname,
old_rel_pages, new_rel_pages),
errdetail_internal("%s",
pg_rusage_show(&ru0))));
@@ -2723,7 +2723,7 @@ count_nondeletable_pages(Relation onerel, LVRelStats *vacrelstats)
{
ereport(elevel,
(errmsg("\"%s\": suspending truncate due to conflicting lock request",
- RelationGetRelationName(onerel))));
+ vacrelstats->relname)));
vacrelstats->lock_waiter_detected = true;
return blkno;
--
2.17.0
