rename TargetWorkerSet enums (#4015)

Rename TargetWorkerSet enums to make them more explicit about what they
mean. Ideally it would be good to treat everything as a node without the
'worker' concept because it makes things complicated. Another
improvement could be to rename TargetWorkerSet as TargetNodeSet but it
goes to renaming many occurrences of Worker, which is probably too big
for this PR.

src/backend/distributed/commands/collation.c

@@ -278,7 +278,7 @@ PreprocessDropCollationStmt(Node *node, const char *queryString)
 								(void *) dropStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -311,7 +311,7 @@ PreprocessAlterCollationOwnerStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -346,7 +346,7 @@ PreprocessRenameCollationStmt(Node *node, const char *queryString)
 								(void *) renameStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -379,7 +379,7 @@ PreprocessAlterCollationSchemaStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -604,6 +604,6 @@ PostprocessDefineCollationStmt(Node *node, const char *queryString)
 
 	MarkObjectDistributed(&collationAddress);
 
-	return NodeDDLTaskList(ALL_WORKERS, CreateCollationDDLsIdempotent(
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, CreateCollationDDLsIdempotent(
 							   collationAddress.objectId));
 }

src/backend/distributed/commands/extension.c

@@ -190,7 +190,7 @@ PostprocessCreateExtensionStmt(Node *node, const char *queryString)
 
 	MarkObjectDistributed(&extensionAddress);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -306,7 +306,7 @@ PreprocessDropExtensionStmt(Node *node, const char *queryString)
 								(void *) deparsedStmt,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -421,7 +421,7 @@ PreprocessAlterExtensionSchemaStmt(Node *node, const char *queryString)
 								(void *) alterExtensionStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -489,7 +489,7 @@ PreprocessAlterExtensionUpdateStmt(Node *node, const char *queryString)
 								(void *) alterExtensionStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 

src/backend/distributed/commands/function.c

@@ -169,7 +169,7 @@ create_distributed_function(PG_FUNCTION_ARGS)
 	const char *alterFunctionOwnerSQL = GetFunctionAlterOwnerCommand(funcOid);
 	initStringInfo(&ddlCommand);
 	appendStringInfo(&ddlCommand, "%s;%s", createFunctionSQL, alterFunctionOwnerSQL);
-	SendCommandToWorkersAsUser(ALL_WORKERS, CurrentUserName(), ddlCommand.data);
+	SendCommandToWorkersAsUser(NON_COORDINATOR_NODES, CurrentUserName(), ddlCommand.data);
 
 	MarkObjectDistributed(&functionAddress);
 
@@ -1192,7 +1192,7 @@ PostprocessCreateFunctionStmt(Node *node, const char *queryString)
 								GetFunctionAlterOwnerCommand(address.objectId),
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -1279,7 +1279,7 @@ PreprocessAlterFunctionStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -1312,7 +1312,7 @@ PreprocessRenameFunctionStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -1343,7 +1343,7 @@ PreprocessAlterFunctionSchemaStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -1375,7 +1375,7 @@ PreprocessAlterFunctionOwnerStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -1477,7 +1477,7 @@ PreprocessDropFunctionStmt(Node *node, const char *queryString)
 								(void *) dropStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 

src/backend/distributed/commands/role.c

@@ -169,7 +169,7 @@ PostprocessAlterRoleStmt(Node *node, const char *queryString)
 	}
 	List *commands = list_make1((void *) CreateAlterRoleIfExistsCommand(stmt));
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -210,7 +210,7 @@ PreprocessAlterRoleSetStmt(Node *node, const char *queryString)
 								   (void *) sql,
 								   ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commandList);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commandList);
 }
 
 

src/backend/distributed/commands/schema.c

@@ -148,7 +148,7 @@ PreprocessGrantOnSchemaStmt(Node *node, const char *queryString)
 
 	stmt->objects = originalObjects;
 
-	return NodeDDLTaskList(ALL_WORKERS, list_make1(sql));
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, list_make1(sql));
 }
 
 

src/backend/distributed/commands/type.c

@@ -162,7 +162,7 @@ PreprocessCompositeTypeStmt(Node *node, const char *queryString)
 								(void *) compositeTypeStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -228,7 +228,7 @@ PreprocessAlterTypeStmt(Node *node, const char *queryString)
 								(void *) alterTypeStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -271,7 +271,7 @@ PreprocessCreateEnumStmt(Node *node, const char *queryString)
 								(void *) createEnumStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -362,7 +362,7 @@ PreprocessAlterEnumStmt(Node *node, const char *queryString)
 						  (void *) alterEnumStmtSql,
 						  ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -500,7 +500,7 @@ PreprocessDropTypeStmt(Node *node, const char *queryString)
 								dropStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -534,7 +534,7 @@ PreprocessRenameTypeStmt(Node *node, const char *queryString)
 								(void *) renameStmtSql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -567,7 +567,7 @@ PreprocessRenameTypeAttributeStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -600,7 +600,7 @@ PreprocessAlterTypeSchemaStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 
@@ -657,7 +657,7 @@ PreprocessAlterTypeOwnerStmt(Node *node, const char *queryString)
 								(void *) sql,
 								ENABLE_DDL_PROPAGATION);
 
-	return NodeDDLTaskList(ALL_WORKERS, commands);
+	return NodeDDLTaskList(NON_COORDINATOR_NODES, commands);
 }
 
 

src/backend/distributed/executor/repartition_join_execution.c

@@ -104,7 +104,7 @@ CreateTemporarySchemasForMergeTasks(Job *topLeveLJob)
 {
 	List *jobIds = ExtractJobsInJobTree(topLeveLJob);
 	char *createSchemasCommand = GenerateCreateSchemasCommand(jobIds, CurrentUserName());
-	SendCommandToWorkersInParallel(ALL_WORKERS, createSchemasCommand,
+	SendCommandToWorkersInParallel(NON_COORDINATOR_NODES, createSchemasCommand,
 								   CitusExtensionOwnerName());
 	return jobIds;
 }
@@ -191,7 +191,8 @@ GenerateJobCommands(List *jobIds, char *templateCommand)
 void
 DoRepartitionCleanup(List *jobIds)
 {
-	SendCommandToWorkersOptionalInParallel(ALL_WORKERS, GenerateDeleteJobsCommand(jobIds),
+	SendCommandToWorkersOptionalInParallel(NON_COORDINATOR_NODES,
+										   GenerateDeleteJobsCommand(jobIds),
 										   CitusExtensionOwnerName());
 }
 

src/backend/distributed/transaction/worker_transaction.c

@@ -201,16 +201,10 @@ TargetWorkerSetNodeList(TargetWorkerSet targetWorkerSet, LOCKMODE lockMode)
 	List *workerNodeList = ActivePrimaryNonCoordinatorNodeList(lockMode);
 	List *result = NIL;
 
-	int32 localGroupId = GetLocalGroupId();
-
 	WorkerNode *workerNode = NULL;
 	foreach_ptr(workerNode, workerNodeList)
 	{
-		if (targetWorkerSet == WORKERS_WITH_METADATA && !workerNode->hasMetadata)
+		if (targetWorkerSet == NON_COORDINATOR_METADATA_NODES && !workerNode->hasMetadata)
-		{
-			continue;
-		}
-		if (targetWorkerSet == OTHER_WORKERS && workerNode->groupId == localGroupId)
 		{
 			continue;
 		}
@@ -232,7 +226,7 @@ TargetWorkerSetNodeList(TargetWorkerSet targetWorkerSet, LOCKMODE lockMode)
 void
 SendBareCommandListToMetadataWorkers(List *commandList)
 {
-	TargetWorkerSet targetWorkerSet = WORKERS_WITH_METADATA;
+	TargetWorkerSet targetWorkerSet = NON_COORDINATOR_METADATA_NODES;
 	List *workerNodeList = TargetWorkerSetNodeList(targetWorkerSet, ShareLock);
 	char *nodeUser = CitusExtensionOwnerName();
 
@@ -271,7 +265,7 @@ SendBareCommandListToMetadataWorkers(List *commandList)
 int
 SendBareOptionalCommandListToAllWorkersAsUser(List *commandList, const char *user)
 {
-	TargetWorkerSet targetWorkerSet = ALL_WORKERS;
+	TargetWorkerSet targetWorkerSet = NON_COORDINATOR_NODES;
 	List *workerNodeList = TargetWorkerSetNodeList(targetWorkerSet, ShareLock);
 	int maxError = RESPONSE_OKAY;
 
@@ -318,11 +312,12 @@ SendCommandToMetadataWorkersParams(const char *command,
 								   const Oid *parameterTypes,
 								   const char *const *parameterValues)
 {
-	List *workerNodeList = TargetWorkerSetNodeList(WORKERS_WITH_METADATA, ShareLock);
+	List *workerNodeList = TargetWorkerSetNodeList(NON_COORDINATOR_METADATA_NODES,
+												   ShareLock);
 
 	ErrorIfAnyMetadataNodeOutOfSync(workerNodeList);
 
-	SendCommandToWorkersParamsInternal(WORKERS_WITH_METADATA, command, user,
+	SendCommandToWorkersParamsInternal(NON_COORDINATOR_METADATA_NODES, command, user,
 									   parameterCount, parameterTypes,
 									   parameterValues);
 }

src/include/distributed/worker_transaction.h

@@ -18,13 +18,13 @@
 
 /*
  * TargetWorkerSet is used for determining the type of workers that a command
- * is targeted to.
+ * is targeted to. Currently it doesn't include coordinator even if it is added
+ * as a worker.
  */
 typedef enum TargetWorkerSet
 {
-	WORKERS_WITH_METADATA,
+	NON_COORDINATOR_METADATA_NODES,
-	OTHER_WORKERS,
+	NON_COORDINATOR_NODES
-	ALL_WORKERS
 } TargetWorkerSet;