external
/
citus
mirror of https://github.com/citusdata/citus.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

worker_append_table_to_shard becomes aware of partitioned tables

pull/2389/head
Onder Kalaci 2018-09-18 15:15:29 +03:00
parent c1b5a04f6e
commit 8520a5b432
2 changed files with 23 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
src/backend/distributed/worker/worker_data_fetch_protocol.c
View File

@ -32,6 +32,7 @@
#include "distributed/metadata_cache.h"
#include "distributed/multi_client_executor.h"
#include "distributed/multi_logical_optimizer.h"
#include "distributed/multi_partitioning_utils.h"
#include "distributed/multi_server_executor.h"
#include "distributed/multi_utility.h"
#include "distributed/relay_utility.h"
@ -763,6 +764,8 @@ worker_append_table_to_shard(PG_FUNCTION_ARGS)
uint64 shardId = INVALID_SHARD_ID;
bool received = false;
StringInfo queryString = NULL;
Oid sourceShardRelationId = InvalidOid;
Oid sourceSchemaId = InvalidOid;
CheckCitusVersion(ERROR);
@ -787,7 +790,25 @@ worker_append_table_to_shard(PG_FUNCTION_ARGS)
sourceQualifiedName = quote_qualified_identifier(sourceSchemaName, sourceTableName);
sourceCopyCommand = makeStringInfo();
/*
* Partitioned tables do not support "COPY table TO STDOUT". Thus, we use
* "COPY (SELECT * FROM table) TO STDOUT" for partitioned tables.
*
* If the schema name is not explicitly set, we use the public schema.
*/
sourceSchemaName = sourceSchemaName ? sourceSchemaName : "public";
sourceSchemaId = get_namespace_oid(sourceSchemaName, false);
sourceShardRelationId = get_relname_relid(sourceTableName, sourceSchemaId);
if (PartitionedTableNoLock(sourceShardRelationId))
{
appendStringInfo(sourceCopyCommand, COPY_SELECT_ALL_OUT_COMMAND,
sourceQualifiedName);
}
else
{
appendStringInfo(sourceCopyCommand, COPY_OUT_COMMAND, sourceQualifiedName);
}
received = ReceiveRegularFile(sourceNodeName, sourceNodePort, NULL, sourceCopyCommand,
localFilePath);

1
src/include/distributed/worker_protocol.h
View File

@ -46,6 +46,7 @@
/* the tablename in the overloaded COPY statement is the to-be-transferred file */
#define TRANSMIT_REGULAR_COMMAND "COPY \"%s\" TO STDOUT WITH (format 'transmit')"
#define COPY_OUT_COMMAND "COPY %s TO STDOUT"
#define COPY_SELECT_ALL_OUT_COMMAND "COPY (SELECT * FROM %s) TO STDOUT"
#define COPY_IN_COMMAND "COPY %s FROM '%s'"
/* Defines that relate to creating tables */