HAWQ-835. Fix snapshot during transaction processing for cannot retrieve tuple from temp table created in function
Project: http://git-wip-us.apache.org/repos/asf/incubator-hawq/repo Commit: http://git-wip-us.apache.org/repos/asf/incubator-hawq/commit/09dba2e1 Tree: http://git-wip-us.apache.org/repos/asf/incubator-hawq/tree/09dba2e1 Diff: http://git-wip-us.apache.org/repos/asf/incubator-hawq/diff/09dba2e1 Branch: refs/heads/HAWQ-543 Commit: 09dba2e178070bf82f0e90cc1d57e0af5dfffcb4 Parents: 5d4c8d0 Author: Ruilong Huo <r...@pivotal.io> Authored: Tue Jun 28 10:53:35 2016 +0800 Committer: Ruilong Huo <r...@pivotal.io> Committed: Tue Jun 28 15:11:33 2016 +0800 ---------------------------------------------------------------------- src/backend/cdb/cdbdatalocality.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/incubator-hawq/blob/09dba2e1/src/backend/cdb/cdbdatalocality.c ---------------------------------------------------------------------- diff --git a/src/backend/cdb/cdbdatalocality.c b/src/backend/cdb/cdbdatalocality.c index adcc3b8..c56232c 100644 --- a/src/backend/cdb/cdbdatalocality.c +++ b/src/backend/cdb/cdbdatalocality.c @@ -854,7 +854,10 @@ int64 get_block_locations_and_claculte_table_size(split_to_segment_mapping_conte MemoryContextSwitchTo(context->datalocality_memorycontext); - ActiveSnapshot = GetTransactionSnapshot(); + if (ActiveSnapshot == NULL) + { + ActiveSnapshot = GetTransactionSnapshot(); + } ActiveSnapshot = CopySnapshot(ActiveSnapshot); ActiveSnapshot->curcid = GetCurrentCommandId();
