Details
-
Bug
-
Status: Resolved
-
Minor
-
Resolution: Fixed
-
Impala 2.7.0
-
None
Description
We should support fixed-size intermediate types for aggregate functions that can contain arbitrary structures. Currently these have to be allocated and stored in variable-length string values. E.g. average functions store their intermediate results in a 16-byte struct.
There is some skeleton code for a BufferVal type in the UDF tests but we don't have end-to-end support for this.
Attachments
Issue Links
- is related to
-
IMPALA-3304 Aggregations do not always spill when exprs use large amount of memory
- Open