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Fix possible PARAMETER_OUT_OF_BOUND error during subcolumns reading from wide part in MergeTree

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This commit is contained in:
avogar 2023-12-23 00:40:10 +00:00
parent f06330dd88
commit a5e0c45603
3 changed files with 19 additions and 2 deletions
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6
src/DataTypes/Serializations/SerializationArray.cpp
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@ -348,6 +348,8 @@ void SerializationArray::deserializeBinaryBulkWithMultipleStreams(
{
auto mutable_column = column->assumeMutable();
ColumnArray & column_array = typeid_cast<ColumnArray &>(*mutable_column);
size_t prev_last_offset = column_array.getOffsets().back();
settings.path.push_back(Substream::ArraySizes);
if (auto cached_column = getFromSubstreamsCache(cache, settings.path))
@ -371,9 +373,9 @@ void SerializationArray::deserializeBinaryBulkWithMultipleStreams(
/// Number of values corresponding with `offset_values` must be read.
size_t last_offset = offset_values.back();
if (last_offset < nested_column->size())
if (last_offset < previous_last_offset)
throw Exception(ErrorCodes::LOGICAL_ERROR, "Nested column is longer than last offset");
size_t nested_limit = last_offset - nested_column->size();
size_t nested_limit = last_offset - previous_last_offset;
if (unlikely(nested_limit > MAX_ARRAYS_SIZE))
throw Exception(ErrorCodes::TOO_LARGE_ARRAY_SIZE, "Array sizes are too large: {}", nested_limit);

0
tests/queries/0_stateless/02950_reading_array_tuple_subcolumns.reference Normal file
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15
tests/queries/0_stateless/02950_reading_array_tuple_subcolumns.sql Normal file
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@ -0,0 +1,15 @@
DROP TABLE IF EXISTS test;
CREATE TABLE test
(
`id` UInt64,
`t` Tuple(a UInt64, b Array(Tuple(c UInt64, d UInt64)))
)
ENGINE = MergeTree
ORDER BY id
SETTINGS min_rows_for_wide_part = 1, min_bytes_for_wide_part = 1, index_granularity = 8192;
INSERT INTO test SELECT number, tuple(number, arrayMap(x -> tuple(number + 1, number + 2), range(number % 10))) FROM numbers(100000);
INSERT INTO test SELECT number, tuple(number, arrayMap(x -> tuple(number + 1, number + 2), range(number % 10))) FROM numbers(100000);
INSERT INTO test SELECT number, tuple(number, arrayMap(x -> tuple(number + 1, number + 2), range(number % 10))) FROM numbers(100000);
SELECT t.b, t.b.c FROM test ORDER BY id FORMAT Null;
DROP TABLE test;