Issue Number : 700746a
| Issue | A SIGSEGV may occur during the process of materializing the buffer in the Sort Segment using EX Chunks received from the SSVR Scan Node. Additionally, even if the materialization completes, an Internal Error may occur during the subsequent Fetch phase, or the query results may be incorrect. |
| Cause | The buffer materialized in SSGMT is read during Fetch based on EX_CHUNK_SIZE. However, the EX Chunks received from SSVR are allocated only according to the actual data size, not EX_CHUNK_SIZE, causing a size mismatch. |
| Solutions | For EX Chunks whose size differs from EX_CHUNK_SIZE, excluding Big Chunks that exceed EX_CHUNK_SIZE, modify the buffer materialization process to serialize based on EX_CHUNK_SIZE. |