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Added support for appending to cstore table shards 

- flexed the check which prevented append operation cstore tables
  since its storage type is not SHARD_STORAGE_TABLE.
- used process utility function to perform copy operation in
  worker_append_table_to shard() instead of directly calling postgresql DoCopy()
- removed the additional check in master_create_empty_shard() function.
  This check was redundant and erroneous since it was called after
  CheckDistributedTable() call.
- modified WorkerTableSize() function to retrieve cstore table shard size correctly.
pull/341/merge
Murat Tuncer 2016-02-16 12:15:53 +02:00
parent e28c474f8d
commit edfd777bed
1 changed files with 11 additions and 3 deletions
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14
src/backend/distributed/master/master_stage_protocol.c
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@ -79,10 +79,17 @@ master_create_empty_shard(PG_FUNCTION_ARGS)
text *nullMinValue = NULL;
text *nullMaxValue = NULL;
char partitionMethod = 0;
char storageType = SHARD_STORAGE_TABLE;
Oid relationId = ResolveRelationId(relationNameText);
CheckDistributedTable(relationId);
if (CStoreTable(relationId))
{
storageType = SHARD_STORAGE_COLUMNAR;
}
partitionMethod = PartitionMethod(relationId);
if (partitionMethod == DISTRIBUTE_BY_HASH)
{
@ -124,7 +131,7 @@ master_create_empty_shard(PG_FUNCTION_ARGS)
CreateShardPlacements(shardId, ddlEventList, candidateNodeList, 0,
ShardReplicationFactor);
InsertShardRow(relationId, shardId, SHARD_STORAGE_TABLE, nullMinValue, nullMaxValue);
InsertShardRow(relationId, shardId, storageType, nullMinValue, nullMaxValue);
PG_RETURN_INT64(shardId);
}
@ -474,7 +481,8 @@ WorkerShardStats(char *nodeName, uint32 nodePort, Oid relationId, char *shardNam
/*
* WorkerTableSize queries the worker node to extract the disk space used by the
* given relation. The function assumes the relation represents a regular table.
* given relation. The function assumes the relation represents a regular table or
* a cstore_fdw table.
*/
static uint64
WorkerTableSize(char *nodeName, uint32 nodePort, Oid relationId, char *tableName)
@ -484,8 +492,8 @@ WorkerTableSize(char *nodeName, uint32 nodePort, Oid relationId, char *tableName
StringInfo tableSizeString = NULL;
char *tableSizeStringEnd = NULL;
bool cstoreTable = CStoreTable(relationId);
StringInfo tableSizeQuery = makeStringInfo();
if (cstoreTable)
{
appendStringInfo(tableSizeQuery, SHARD_CSTORE_TABLE_SIZE_QUERY, tableName);