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remote shard update

m3hm3t/add-freeze-copy
Mehmet YILMAZ 2024-09-10 13:37:07 +00:00
parent d13ecedcfa
commit 812f9b182f
1 changed files with 47 additions and 37 deletions
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84
src/backend/distributed/operations/worker_shard_copy.c
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@ -100,56 +100,66 @@ CanUseLocalCopy(uint32_t destinationNodeId)
static void
ConnectToRemoteAndStartCopy(ShardCopyDestReceiver *copyDest)
{
int connectionFlags = OUTSIDE_TRANSACTION;
char *currentUser = CurrentUserName();
WorkerNode *workerNode = FindNodeWithNodeId(copyDest->destinationNodeId,
false /* missingOk */);
copyDest->connection = GetNodeUserDatabaseConnection(connectionFlags,
workerNode->workerName,
workerNode->workerPort,
currentUser,
NULL /* database (current) */);
ClaimConnectionExclusively(copyDest->connection);
int connectionFlags = OUTSIDE_TRANSACTION;
char *currentUser = CurrentUserName();
WorkerNode *workerNode = FindNodeWithNodeId(copyDest->destinationNodeId,
false /* missingOk */);
copyDest->connection = GetNodeUserDatabaseConnection(connectionFlags,
workerNode->workerName,
workerNode->workerPort,
currentUser,
NULL /* database (current) */);
ClaimConnectionExclusively(copyDest->connection);
StartRemoteTransactionBegin(copyDest->connection);
/* Begin the remote transaction */
RemoteTransactionBegin(copyDest->connection);
SetupReplicationOriginRemoteSession(copyDest->connection);
/* Construct and send the TRUNCATE statement to the remote node */
StringInfo truncateStatement = ConstructShardTruncateStatement(
copyDest->destinationShardFullyQualifiedName);
/* Handle TRUNCATE or any setup commands */
StringInfo truncateStatement = ConstructShardTruncateStatement(
copyDest->destinationShardFullyQualifiedName);
if (!SendRemoteCommand(copyDest->connection, truncateStatement->data))
{
ReportConnectionError(copyDest->connection, ERROR);
}
if (!SendRemoteCommand(copyDest->connection, truncateStatement->data))
{
ReportConnectionError(copyDest->connection, ERROR);
RemoteTransactionAbort(copyDest->connection);
ResetRemoteTransaction(copyDest->connection);
}
PGresult *truncateResult = GetRemoteCommandResult(copyDest->connection, true);
if (PQresultStatus(truncateResult) != PGRES_COMMAND_OK)
{
ReportResultError(copyDest->connection, truncateResult, ERROR);
}
PQclear(truncateResult);
PGresult *truncateResult = GetRemoteCommandResult(copyDest->connection, true);
if (!IsResponseOK(truncateResult))
{
ReportResultError(copyDest->connection, truncateResult, ERROR);
PQclear(truncateResult);
ForgetResults(copyDest->connection);
RemoteTransactionAbort(copyDest->connection);
ResetRemoteTransaction(copyDest->connection);
}
PQclear(truncateResult);
ForgetResults(copyDest->connection);
/* Construct the COPY command and send it to the remote node */
StringInfo copyStatement = ConstructShardCopyStatement(
copyDest->destinationShardFullyQualifiedName,
copyDest->copyOutState->binary,
copyDest->tupleDescriptor);
/* Construct and send the COPY statement with FREEZE */
StringInfo copyStatement = ConstructShardCopyStatement(
copyDest->destinationShardFullyQualifiedName,
copyDest->copyOutState->binary,
copyDest->tupleDescriptor);
if (!SendRemoteCommand(copyDest->connection, copyStatement->data))
{
ReportConnectionError(copyDest->connection, ERROR);
}
if (!SendRemoteCommand(copyDest->connection, copyStatement->data))
{
ReportConnectionError(copyDest->connection, ERROR);
RemoteTransactionAbort(copyDest->connection);
ResetRemoteTransaction(copyDest->connection);
}
PGresult *result = GetRemoteCommandResult(copyDest->connection,
PGresult *copyResult = GetRemoteCommandResult(copyDest->connection,
true /* raiseInterrupts */);
if (PQresultStatus(result) != PGRES_COPY_IN)
if (PQresultStatus(copyResult ) != PGRES_COPY_IN)
{
ReportResultError(copyDest->connection, result, ERROR);
ReportResultError(copyDest->connection, copyResult, ERROR);
}
PQclear(result);
PQclear(copyResult);
}