Github user jihoonson commented on a diff in the pull request:
https://github.com/apache/tajo/pull/835#discussion_r42832230
--- Diff:
tajo-catalog/tajo-catalog-server/src/main/java/org/apache/tajo/catalog/store/AbstractDBStore.java
---
@@ -1245,13 +1163,11 @@ private void renameColumn(final int tableId, final
CatalogProtos.AlterColumnProt
LOG.debug(insertNewColumnSql);
}
- Connection conn;
PreparedStatement pstmt = null;
ResultSet resultSet = null;
- try {
+ try (Connection conn = getConnection()) {
--- End diff --
Why do you close the connection here?
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