Clear statistics on slice

kou · Aug 30, 2024 · ea16740 · ea16740
1 parent 97c2c7d
commit ea16740
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diff --git a/cpp/src/arrow/array/array_test.cc b/cpp/src/arrow/array/array_test.cc
@@ -3812,6 +3812,11 @@ TEST_F(TestArrayDataStatistics, CopyAssignment) {
  ASSERT_TRUE(copied_data.statistics->is_max_exact);
 }
 
+TEST_F(TestArrayDataStatistics, Slice) {
+ auto sliced_data = data_->Slice(0, 1);
+ ASSERT_FALSE(sliced_data->statistics);
+}
+
 template <typename PType>
 class TestPrimitiveArray : public ::testing::Test {
  public:

diff --git a/cpp/src/arrow/array/data.cc b/cpp/src/arrow/array/data.cc
@@ -195,6 +195,7 @@ std::shared_ptr<ArrayData> ArrayData::Slice(int64_t off, int64_t len) const {
  } else {
  copy->null_count = null_count != 0 ? kUnknownNullCount : 0;
  }
+ copy->statistics = nullptr;
  return copy;
 }