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Invent struct ReindexIndexInfo

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This struct is used by ReindexRelationConcurrently to keep track of the
relations to process.  This saves having to obtain some data repeatedly,
and has future uses as well.

Reviewed-by: Dmitry Dolgov <9erthalion6@gmail.com>
Reviewed-by: Hamid Akhtar <hamid.akhtar@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Discussion: https://postgr.es/m/20201130195439.GA24598@alvherre.pgsql
pull/62/head
Alvaro Herrera 5 years ago
parent 9eabfe300a
commit c6c4b37395
No known key found for this signature in database
GPG Key ID: 1C20ACB9D5C564AE
2 changed files with 66 additions and 61 deletions
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  1. 126
      src/backend/commands/indexcmds.c
  2. 1
      src/tools/pgindent/typedefs.list

126
src/backend/commands/indexcmds.c
Unescape View File

@ -3061,6 +3061,12 @@ ReindexMultipleInternal(List *relids, int options)
static bool
ReindexRelationConcurrently(Oid relationOid, int options)
{
typedef struct ReindexIndexInfo
{
Oid indexId;
Oid tableId;
Oid amId;
} ReindexIndexInfo;
List *heapRelationIds = NIL;
List *indexIds = NIL;
List *newIndexIds = NIL;
@ -3170,10 +3176,16 @@ ReindexRelationConcurrently(Oid relationOid, int options)
get_rel_name(cellOid))));
else
{
ReindexIndexInfo *idx;
/* Save the list of relation OIDs in private context */
oldcontext = MemoryContextSwitchTo(private_context);
indexIds = lappend_oid(indexIds, cellOid);
idx = palloc(sizeof(ReindexIndexInfo));
idx->indexId = cellOid;
/* other fields set later */
indexIds = lappend(indexIds, idx);
MemoryContextSwitchTo(oldcontext);
}
@ -3210,13 +3222,18 @@ ReindexRelationConcurrently(Oid relationOid, int options)
get_rel_name(cellOid))));
else
{
ReindexIndexInfo *idx;
/*
* Save the list of relation OIDs in private
* context
*/
oldcontext = MemoryContextSwitchTo(private_context);
indexIds = lappend_oid(indexIds, cellOid);
idx = palloc(sizeof(ReindexIndexInfo));
idx->indexId = cellOid;
indexIds = lappend(indexIds, idx);
/* other fields set later */
MemoryContextSwitchTo(oldcontext);
}
@ -3235,6 +3252,7 @@ ReindexRelationConcurrently(Oid relationOid, int options)
Oid heapId = IndexGetRelation(relationOid,
(options & REINDEXOPT_MISSING_OK) != 0);
Relation heapRelation;
ReindexIndexInfo *idx;
/* if relation is missing, leave */
if (!OidIsValid(heapId))
@ -3285,7 +3303,10 @@ ReindexRelationConcurrently(Oid relationOid, int options)
* Save the list of relation OIDs in private context. Note
* that invalid indexes are allowed here.
*/
indexIds = lappend_oid(indexIds, relationOid);
idx = palloc(sizeof(ReindexIndexInfo));
idx->indexId = relationOid;
indexIds = lappend(indexIds, idx);
/* other fields set later */
MemoryContextSwitchTo(oldcontext);
break;
@ -3344,31 +3365,36 @@ ReindexRelationConcurrently(Oid relationOid, int options)
foreach(lc, indexIds)
{
char *concurrentName;
Oid indexId = lfirst_oid(lc);
ReindexIndexInfo *idx = lfirst(lc);
ReindexIndexInfo *newidx;
Oid newIndexId;
Relation indexRel;
Relation heapRel;
Relation newIndexRel;
LockRelId *lockrelid;
indexRel = index_open(indexId, ShareUpdateExclusiveLock);
indexRel = index_open(idx->indexId, ShareUpdateExclusiveLock);
heapRel = table_open(indexRel->rd_index->indrelid,
ShareUpdateExclusiveLock);
idx->tableId = RelationGetRelid(heapRel);
idx->amId = indexRel->rd_rel->relam;
/* This function shouldn't be called for temporary relations. */
if (indexRel->rd_rel->relpersistence == RELPERSISTENCE_TEMP)
elog(ERROR, "cannot reindex a temporary table concurrently");
pgstat_progress_start_command(PROGRESS_COMMAND_CREATE_INDEX,
RelationGetRelid(heapRel));
idx->tableId);
progress_vals[0] = PROGRESS_CREATEIDX_COMMAND_REINDEX_CONCURRENTLY;
progress_vals[1] = 0; /* initializing */
progress_vals[2] = indexId;
progress_vals[3] = indexRel->rd_rel->relam;
progress_vals[2] = idx->indexId;
progress_vals[3] = idx->amId;
pgstat_progress_update_multi_param(4, progress_index, progress_vals);
/* Choose a temporary relation name for the new index */
concurrentName = ChooseRelationName(get_rel_name(indexId),
concurrentName = ChooseRelationName(get_rel_name(idx->indexId),
NULL,
"ccnew",
get_rel_namespace(indexRel->rd_index->indrelid),
@ -3376,7 +3402,7 @@ ReindexRelationConcurrently(Oid relationOid, int options)
/* Create new index definition based on given index */
newIndexId = index_concurrently_create_copy(heapRel,
indexId,
idx->indexId,
concurrentName);
/*
@ -3390,7 +3416,12 @@ ReindexRelationConcurrently(Oid relationOid, int options)
*/
oldcontext = MemoryContextSwitchTo(private_context);
newIndexIds = lappend_oid(newIndexIds, newIndexId);
newidx = palloc(sizeof(ReindexIndexInfo));
newidx->indexId = newIndexId;
newidx->tableId = idx->tableId;
newidx->amId = idx->amId;
newIndexIds = lappend(newIndexIds, newidx);
/*
* Save lockrelid to protect each relation from drop then close
@ -3471,10 +3502,7 @@ ReindexRelationConcurrently(Oid relationOid, int options)
foreach(lc, newIndexIds)
{
Relation newIndexRel;
Oid newIndexId = lfirst_oid(lc);
Oid heapId;
Oid indexam;
ReindexIndexInfo *newidx = lfirst(lc);
/* Start new transaction for this index's concurrent build */
StartTransactionCommand();
@ -3489,28 +3517,19 @@ ReindexRelationConcurrently(Oid relationOid, int options)
/* Set ActiveSnapshot since functions in the indexes may need it */
PushActiveSnapshot(GetTransactionSnapshot());
/*
* Index relation has been closed by previous commit, so reopen it to
* get its information.
*/
newIndexRel = index_open(newIndexId, ShareUpdateExclusiveLock);
heapId = newIndexRel->rd_index->indrelid;
indexam = newIndexRel->rd_rel->relam;
index_close(newIndexRel, NoLock);
/*
* Update progress for the index to build, with the correct parent
* table involved.
*/
pgstat_progress_start_command(PROGRESS_COMMAND_CREATE_INDEX, heapId);
pgstat_progress_start_command(PROGRESS_COMMAND_CREATE_INDEX, newidx->tableId);
progress_vals[0] = PROGRESS_CREATEIDX_COMMAND_REINDEX_CONCURRENTLY;
progress_vals[1] = PROGRESS_CREATEIDX_PHASE_BUILD;
progress_vals[2] = newIndexId;
progress_vals[3] = indexam;
progress_vals[2] = newidx->indexId;
progress_vals[3] = newidx->amId;
pgstat_progress_update_multi_param(4, progress_index, progress_vals);
/* Perform concurrent build of new index */
index_concurrently_build(heapId, newIndexId);
index_concurrently_build(newidx->tableId, newidx->indexId);
PopActiveSnapshot();
CommitTransactionCommand();
@ -3532,12 +3551,9 @@ ReindexRelationConcurrently(Oid relationOid, int options)
foreach(lc, newIndexIds)
{
Oid newIndexId = lfirst_oid(lc);
Oid heapId;
ReindexIndexInfo *newidx = lfirst(lc);
TransactionId limitXmin;
Snapshot snapshot;
Relation newIndexRel;
Oid indexam;
StartTransactionCommand();
@ -3555,27 +3571,19 @@ ReindexRelationConcurrently(Oid relationOid, int options)
snapshot = RegisterSnapshot(GetTransactionSnapshot());
PushActiveSnapshot(snapshot);
/*
* Index relation has been closed by previous commit, so reopen it to
* get its information.
*/
newIndexRel = index_open(newIndexId, ShareUpdateExclusiveLock);
heapId = newIndexRel->rd_index->indrelid;
indexam = newIndexRel->rd_rel->relam;
index_close(newIndexRel, NoLock);
/*
* Update progress for the index to build, with the correct parent
* table involved.
*/
pgstat_progress_start_command(PROGRESS_COMMAND_CREATE_INDEX, heapId);
pgstat_progress_start_command(PROGRESS_COMMAND_CREATE_INDEX,
newidx->tableId);
progress_vals[0] = PROGRESS_CREATEIDX_COMMAND_REINDEX_CONCURRENTLY;
progress_vals[1] = PROGRESS_CREATEIDX_PHASE_VALIDATE_IDXSCAN;
progress_vals[2] = newIndexId;
progress_vals[3] = indexam;
progress_vals[2] = newidx->indexId;
progress_vals[3] = newidx->amId;
pgstat_progress_update_multi_param(4, progress_index, progress_vals);
validate_index(heapId, newIndexId, snapshot);
validate_index(newidx->tableId, newidx->indexId, snapshot);
/*
* We can now do away with our active snapshot, we still need to save
@ -3622,10 +3630,9 @@ ReindexRelationConcurrently(Oid relationOid, int options)
forboth(lc, indexIds, lc2, newIndexIds)
{
ReindexIndexInfo *oldidx = lfirst(lc);
ReindexIndexInfo *newidx = lfirst(lc2);
char *oldName;
Oid oldIndexId = lfirst_oid(lc);
Oid newIndexId = lfirst_oid(lc2);
Oid heapId;
/*
* Check for user-requested abort. This is inside a transaction so as
@ -3634,27 +3641,25 @@ ReindexRelationConcurrently(Oid relationOid, int options)
*/
CHECK_FOR_INTERRUPTS();
heapId = IndexGetRelation(oldIndexId, false);
/* Choose a relation name for old index */
oldName = ChooseRelationName(get_rel_name(oldIndexId),
oldName = ChooseRelationName(get_rel_name(oldidx->indexId),
NULL,
"ccold",
get_rel_namespace(heapId),
get_rel_namespace(oldidx->tableId),
false);
/*
* Swap old index with the new one. This also marks the new one as
* valid and the old one as not valid.
*/
index_concurrently_swap(newIndexId, oldIndexId, oldName);
index_concurrently_swap(newidx->indexId, oldidx->indexId, oldName);
/*
* Invalidate the relcache for the table, so that after this commit
* all sessions will refresh any cached plans that might reference the
* index.
*/
CacheInvalidateRelcacheByRelid(heapId);
CacheInvalidateRelcacheByRelid(oldidx->tableId);
/*
* CCI here so that subsequent iterations see the oldName in the
@ -3684,8 +3689,7 @@ ReindexRelationConcurrently(Oid relationOid, int options)
foreach(lc, indexIds)
{
Oid oldIndexId = lfirst_oid(lc);
Oid heapId;
ReindexIndexInfo *oldidx = lfirst(lc);
/*
* Check for user-requested abort. This is inside a transaction so as
@ -3694,8 +3698,7 @@ ReindexRelationConcurrently(Oid relationOid, int options)
*/
CHECK_FOR_INTERRUPTS();
heapId = IndexGetRelation(oldIndexId, false);
index_concurrently_set_dead(heapId, oldIndexId);
index_concurrently_set_dead(oldidx->tableId, oldidx->indexId);
}
/* Commit this transaction to make the updates visible. */
@ -3719,11 +3722,11 @@ ReindexRelationConcurrently(Oid relationOid, int options)
foreach(lc, indexIds)
{
Oid oldIndexId = lfirst_oid(lc);
ReindexIndexInfo *idx = lfirst(lc);
ObjectAddress object;
object.classId = RelationRelationId;
object.objectId = oldIndexId;
object.objectId = idx->indexId;
object.objectSubId = 0;
add_exact_object_address(&object, objects);
@ -3766,7 +3769,8 @@ ReindexRelationConcurrently(Oid relationOid, int options)
{
foreach(lc, newIndexIds)
{
Oid indOid = lfirst_oid(lc);
ReindexIndexInfo *idx = lfirst(lc);
Oid indOid = idx->indexId;
ereport(INFO,
(errmsg("index \"%s.%s\" was reindexed",

1
src/tools/pgindent/typedefs.list
Unescape View File

@ -2061,6 +2061,7 @@ Regis
RegisNode
RegisteredBgWorker
ReindexErrorInfo
ReindexIndexInfo
ReindexObjectType
ReindexStmt
ReindexType

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