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new c08d894534c [fix](schema-change) Fix schema-change from non-null to
null (#37487)
c08d894534c is described below
commit c08d894534ce7bea1f15ec25881c476cfff10ddc
Author: Lightman <31928846+lchangli...@users.noreply.github.com>
AuthorDate: Tue Jul 9 13:43:49 2024 +0800
[fix](schema-change) Fix schema-change from non-null to null (#37487)
https://github.com/apache/doris/pull/32913
---
be/src/olap/schema_change.cpp | 23 +++++++++++++++++-----
.../org/apache/doris/alter/SchemaChangeJobV2.java | 2 +-
2 files changed, 19 insertions(+), 6 deletions(-)
diff --git a/be/src/olap/schema_change.cpp b/be/src/olap/schema_change.cpp
index 822946cbab2..9d2b3b94a48 100644
--- a/be/src/olap/schema_change.cpp
+++ b/be/src/olap/schema_change.cpp
@@ -349,7 +349,7 @@ Status BlockChanger::change_block(vectorized::Block*
ref_block,
assert_cast<vectorized::ColumnNullable*>(new_col->assume_mutable().get());
new_nullable_col->change_nested_column(ref_col);
-
new_nullable_col->get_null_map_data().resize_fill(new_nullable_col->size());
+
new_nullable_col->get_null_map_data().resize_fill(ref_col->size());
} else {
// nullable to not nullable:
// suppose column `c_phone` is originally varchar(16) NOT NULL,
@@ -397,11 +397,24 @@ Status
BlockChanger::_check_cast_valid(vectorized::ColumnPtr ref_column,
return Status::DataQualityError("Null data is changed to not
nullable");
}
} else {
- auto* new_null_map =
+ const auto& null_map_column =
vectorized::check_and_get_column<vectorized::ColumnNullable>(new_column)
- ->get_null_map_column()
- .get_data()
- .data();
+ ->get_null_map_column();
+ const auto& nested_column =
+
vectorized::check_and_get_column<vectorized::ColumnNullable>(new_column)
+ ->get_nested_column();
+ const auto* new_null_map = null_map_column.get_data().data();
+
+ if (null_map_column.size() != new_column->size() ||
+ nested_column.size() != new_column->size()) {
+ DCHECK(false) << "null_map_column_size=" <<
null_map_column.size()
+ << " new_column_size=" << new_column->size()
+ << " nested_column_size=" <<
nested_column.size();
+ return Status::InternalError(
+ "null_map_column size is changed,
null_map_column_size={}, "
+ "new_column_size={}",
+ null_map_column.size(), new_column->size());
+ }
bool is_changed = false;
for (size_t i = 0; i < ref_column->size(); i++) {
diff --git
a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
index d59a6d6bf9e..242babdfd69 100644
--- a/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
+++ b/fe/fe-core/src/main/java/org/apache/doris/alter/SchemaChangeJobV2.java
@@ -436,7 +436,7 @@ public class SchemaChangeJobV2 extends AlterJobV2 {
if
(indexColumnMap.containsKey(SchemaChangeHandler.SHADOW_NAME_PREFIX +
column.getName())) {
Column newColumn =
indexColumnMap.get(SchemaChangeHandler.SHADOW_NAME_PREFIX + column.getName());
- if (newColumn.getType() != column.getType()) {
+ if (!newColumn.getType().equals(column.getType())) {
try {
SlotRef slot = new SlotRef(destSlotDesc);
slot.setCol(column.getName());
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