Lili Ma created HAWQ-1167:
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Summary: Parquet format table estimate column width meets error
for bpchar type
Key: HAWQ-1167
URL: https://issues.apache.org/jira/browse/HAWQ-1167
Project: Apache HAWQ
Issue Type: Bug
Components: Storage
Reporter: Lili Ma
Assignee: Lei Chang
In function estimateColumnWidth, the atttypmod attribute for type bpchar may be
-1, and will provide wrong value to columnWidths. Should estimate a valid
length for any type.
{code}
case HAWQ_TYPE_BPCHAR:
/* for char(n), atttypmod is n + 4 */
Assert(att->atttypmod > 4);
columnWidths[(*colidx)++] = att->atttypmod;
{code}
Reproduce type:
1. create table A(a int, b bpchar);
2. select oid from pg_class where relname='a';
3. select attname, atttypmod from pg_attribute where attrelid=$oid
will see the atttypmod is -1, thus will bring error.
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