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make VacuumTaskList even with other taskList functions and some safety changes 

Makees VacuumTaskList function even with other TaskList creator functions.
Also, previously we were generating per-shard vacuum command strings via
unconventional usage of StringInfo struct (setting the stringInfo->len field
manually) which could cause unexepected memory errors (that I cannot foresee now).
pull/3554/head
Onur Tirtir 2020-02-29 14:54:39 +03:00
parent cf718ffe77
commit ff9c9d1808
1 changed files with 23 additions and 16 deletions
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39
src/backend/distributed/commands/vacuum.c
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@ -44,7 +44,7 @@ typedef struct CitusVacuumParams
static bool IsDistributedVacuumStmt(int vacuumOptions, List *vacuumRelationIdList);
static List * VacuumTaskList(Oid relationId, CitusVacuumParams vacuumParams,
List *vacuumColumnList);
static StringInfo DeparseVacuumStmtPrefix(CitusVacuumParams vacuumParams);
static char * DeparseVacuumStmtPrefix(CitusVacuumParams vacuumParams);
static char * DeparseVacuumColumnNames(List *columnNameList);
static List * VacuumColumnList(VacuumStmt *vacuumStmt, int relationIndex);
static List * ExtractVacuumTargetRels(VacuumStmt *vacuumStmt);
@ -182,15 +182,17 @@ IsDistributedVacuumStmt(int vacuumOptions, List *vacuumRelationIdList)
static List *
VacuumTaskList(Oid relationId, CitusVacuumParams vacuumParams, List *vacuumColumnList)
{
/* resulting task list */
List *taskList = NIL;
uint64 jobId = INVALID_JOB_ID;
/* enumerate the tasks when putting them to the taskList */
int taskId = 1;
StringInfo vacuumString = DeparseVacuumStmtPrefix(vacuumParams);
const int vacuumPrefixLen = vacuumString->len;
Oid schemaId = get_rel_namespace(relationId);
char *schemaName = get_namespace_name(schemaId);
char *tableName = get_rel_name(relationId);
char *relationName = get_rel_name(relationId);
const char *vacuumStringPrefix = DeparseVacuumStmtPrefix(vacuumParams);
const char *columnNames = DeparseVacuumColumnNames(vacuumColumnList);
/*
@ -210,20 +212,25 @@ VacuumTaskList(Oid relationId, CitusVacuumParams vacuumParams, List *vacuumColum
foreach_ptr(shardInterval, shardIntervalList)
{
uint64 shardId = shardInterval->shardId;
char *shardRelationName = pstrdup(relationName);
char *shardName = pstrdup(tableName);
AppendShardIdToName(&shardName, shardInterval->shardId);
shardName = quote_qualified_identifier(schemaName, shardName);
/* build shard relation name */
AppendShardIdToName(&shardRelationName, shardId);
vacuumString->len = vacuumPrefixLen;
appendStringInfoString(vacuumString, shardName);
appendStringInfoString(vacuumString, columnNames);
char *quotedShardName = quote_qualified_identifier(schemaName, shardRelationName);
/* copy base vacuum string and build the shard specific command */
StringInfo vacuumStringForShard = makeStringInfo();
appendStringInfoString(vacuumStringForShard, vacuumStringPrefix);
appendStringInfoString(vacuumStringForShard, quotedShardName);
appendStringInfoString(vacuumStringForShard, columnNames);
Task *task = CitusMakeNode(Task);
task->jobId = jobId;
task->jobId = INVALID_JOB_ID;
task->taskId = taskId++;
task->taskType = VACUUM_ANALYZE_TASK;
SetTaskQueryString(task, pstrdup(vacuumString->data));
SetTaskQueryString(task, vacuumStringForShard->data);
task->dependentTaskList = NULL;
task->replicationModel = REPLICATION_MODEL_INVALID;
task->anchorShardId = shardId;
@ -242,7 +249,7 @@ VacuumTaskList(Oid relationId, CitusVacuumParams vacuumParams, List *vacuumColum
* reuse this prefix within a loop to generate shard-specific VACUUM or ANALYZE
* statements.
*/
static StringInfo
static char *
DeparseVacuumStmtPrefix(CitusVacuumParams vacuumParams)
{
int vacuumFlags = vacuumParams.options;
@ -276,7 +283,7 @@ DeparseVacuumStmtPrefix(CitusVacuumParams vacuumParams)
#endif
)
{
return vacuumPrefix;
return vacuumPrefix->data;
}
/* otherwise, handle options */
@ -334,7 +341,7 @@ DeparseVacuumStmtPrefix(CitusVacuumParams vacuumParams)
appendStringInfoChar(vacuumPrefix, ' ');
return vacuumPrefix;
return vacuumPrefix->data;
}