emkornfield commented on a change in pull request #11538:
URL: https://github.com/apache/arrow/pull/11538#discussion_r783280555
##########
File path: go/parquet/file/column_writer_test.go
##########
@@ -45,6 +49,73 @@ const (
DictionaryPageSize = 1024 * 1024
)
+type mockpagewriter struct {
+ mock.Mock
+}
+
+func (m *mockpagewriter) Close(hasDict, fallBack bool) error {
+ return m.Called(hasDict, fallBack).Error(0)
+}
+func (m *mockpagewriter) WriteDataPage(page file.DataPage) (int64, error) {
+ args := m.Called(page)
+ return int64(args.Int(0)), args.Error(1)
+}
+func (m *mockpagewriter) WriteDictionaryPage(page *file.DictionaryPage)
(int64, error) {
+ args := m.Called(page)
+ return int64(args.Int(0)), args.Error(1)
+}
+func (m *mockpagewriter) HasCompressor() bool {
+ return m.Called().Bool(0)
+}
+func (m *mockpagewriter) Compress(buf *bytes.Buffer, src []byte) []byte {
+ return m.Called(buf, src).Get(0).([]byte)
+}
+func (m *mockpagewriter) Reset(sink utils.WriterTell, codec
compress.Compression, compressionLevel int, metadata
*metadata.ColumnChunkMetaDataBuilder, rgOrdinal, columnOrdinal int16,
metaEncryptor, dataEncryptor encryption.Encryptor) error {
+ return m.Called().Error(0)
+}
+
+func TestWriteDataPageV2NumRows(t *testing.T) {
+ // test issue from PARQUET-2066
+ sc := schema.NewSchema(schema.MustGroup(schema.NewGroupNode("schema",
parquet.Repetitions.Required, schema.FieldList{
+ schema.Must(schema.ListOf(
+ schema.Must(schema.NewPrimitiveNode("column",
parquet.Repetitions.Optional, parquet.Types.Int32, -1, -1)),
+ parquet.Repetitions.Optional, -1)),
+ }, -1)))
+ descr := sc.Column(0)
+ props := parquet.NewWriterProperties(
+ parquet.WithVersion(parquet.V2_LATEST),
+ parquet.WithDataPageVersion(parquet.DataPageV2),
+ parquet.WithDictionaryDefault(false))
+
+ metadata := metadata.NewColumnChunkMetaDataBuilder(props, descr)
+ pager := new(mockpagewriter)
+ defer pager.AssertExpectations(t)
+ pager.On("HasCompressor").Return(false)
+ wr := file.NewColumnChunkWriter(metadata, pager,
props).(*file.Int32ColumnChunkWriter)
+
+ // write a list "[[0, 1], null, [2, null, 3]]"
+ // should be 6 values, 2 nulls and 3 rows
+ wr.WriteBatch([]int32{0, 1, 2, 3},
+ []int16{3, 3, 0, 3, 2, 3},
+ []int16{0, 1, 0, 0, 1, 1})
+
+ pager.On("WriteDataPage", mock.MatchedBy(func(page file.DataPage) bool {
+ pagev2, ok := page.(*file.DataPageV2)
+ if !ok {
+ return false
+ }
+
+ // only match if the page being written has 2 nulls, 6 values
and 3 rows
+ return !pagev2.IsCompressed() &&
Review comment:
I was thinking about the null_count in statistics.
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