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[GitHub] [arrow-rs] viirya opened a new pull request, #1585: Read/write nested dictionary under large list in ipc stream reader/writer
viirya opened a new pull request, #1585:
URL: https://github.com/apache/arrow-rs/pull/1585
# Which issue does this PR close?
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Closes #1584.
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[GitHub] [arrow-rs] tustvold merged pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold merged PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585
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[GitHub] [arrow-rs] codecov-commenter commented on pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
codecov-commenter commented on PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#issuecomment-1101030099
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[GitHub] [arrow-rs] tustvold commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r852767908
##########
arrow/src/datatypes/field.rs:
##########
@@ -131,7 +131,7 @@ impl Field {
DataType::List(field)
| DataType::LargeList(field)
| DataType::FixedSizeList(field, _)
- | DataType::Map(field, _) => collected_fields.push(field),
+ | DataType::Map(field, _) => collected_fields.extend(field.fields()),
Review Comment:
Possibly an accidental inclusion from #1583 ?
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[GitHub] [arrow-rs] tustvold commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r852765193
##########
arrow/src/ipc/reader.rs:
##########
@@ -1481,4 +1479,35 @@ mod tests {
let output_batch = roundtrip_ipc_stream(&input_batch);
assert_eq!(input_batch, output_batch);
}
+
+ #[test]
+ fn test_roundtrip_stream_nested_dict_dict_in_list() {
Review Comment:
```suggestion
fn test_roundtrip_stream_dict_of_list_of_dict() {
```
##########
arrow/src/datatypes/field.rs:
##########
@@ -131,7 +131,7 @@ impl Field {
DataType::List(field)
| DataType::LargeList(field)
| DataType::FixedSizeList(field, _)
- | DataType::Map(field, _) => collected_fields.push(field),
+ | DataType::Map(field, _) => collected_fields.extend(field.fields()),
Review Comment:
What does this change relate to?
##########
arrow/src/ipc/reader.rs:
##########
@@ -1481,4 +1479,35 @@ mod tests {
let output_batch = roundtrip_ipc_stream(&input_batch);
assert_eq!(input_batch, output_batch);
}
+
+ #[test]
+ fn test_roundtrip_stream_nested_dict_dict_in_list() {
+ // list
+ let list_data_type = DataType::List(Box::new(Field::new_dict(
+ "item",
+ DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
+ false,
+ 1,
+ false,
+ )));
+ let offsets: &[i32; 4] = &[0, 2, 4, 6];
Review Comment:
Maybe try a zero-length slice, instead of uniform 2 each time?
##########
arrow/src/ipc/reader.rs:
##########
@@ -1444,29 +1444,27 @@ mod tests {
assert_eq!(input_batch, output_batch);
}
- #[test]
- fn test_roundtrip_stream_nested_dict_dict() {
+ fn test_test_roundtrip_stream_nested_dict_dict_for_list<
Review Comment:
```suggestion
fn test_roundtrip_stream_dict_of_list_of_dict_impl<
```
Maybe?
##########
arrow/src/ipc/reader.rs:
##########
@@ -1444,29 +1444,27 @@ mod tests {
assert_eq!(input_batch, output_batch);
}
- #[test]
- fn test_roundtrip_stream_nested_dict_dict() {
+ fn test_test_roundtrip_stream_nested_dict_dict_for_list<
+ OffsetSize: OffsetSizeTrait,
+ U: ArrowNativeType,
+ >(
+ list_data_type: DataType,
+ offsets: &[U; 4],
+ ) {
let values = StringArray::from_iter_values(["a", "b", "c"]);
let keys = Int8Array::from_iter_values([0, 0, 1, 2, 0, 1]);
let dict_array = DictionaryArray::<Int8Type>::try_new(&keys, &values).unwrap();
let dict_data = dict_array.data();
- let value_offsets = Buffer::from_slice_ref(&[0, 2, 4, 6]);
+ let value_offsets = Buffer::from_slice_ref(offsets);
- let list_data_type = DataType::List(Box::new(Field::new_dict(
- "item",
- DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
- false,
- 1,
- false,
- )));
let list_data = ArrayData::builder(list_data_type)
.len(3)
.add_buffer(value_offsets)
.add_child_data(dict_data.clone())
.build()
.unwrap();
- let list_array = ListArray::from(list_data);
+ let list_array = GenericListArray::<OffsetSize>::from(list_data);
let dict_dict_array =
DictionaryArray::<Int8Type>::try_new(&keys, &list_array).unwrap();
Review Comment:
Could consider using a different keys array for this dictionary for added :hot_pepper:
##########
arrow/src/ipc/reader.rs:
##########
@@ -1481,4 +1479,35 @@ mod tests {
let output_batch = roundtrip_ipc_stream(&input_batch);
assert_eq!(input_batch, output_batch);
}
+
+ #[test]
+ fn test_roundtrip_stream_nested_dict_dict_in_list() {
+ // list
+ let list_data_type = DataType::List(Box::new(Field::new_dict(
+ "item",
+ DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
+ false,
Review Comment:
Could also test some nulls, just because they always seem to break things :sweat_smile:
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[GitHub] [arrow-rs] tustvold commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r853813924
##########
arrow/src/ipc/reader.rs:
##########
@@ -1444,32 +1444,31 @@ mod tests {
assert_eq!(input_batch, output_batch);
}
- #[test]
- fn test_roundtrip_stream_nested_dict_dict() {
- let values = StringArray::from_iter_values(["a", "b", "c"]);
- let keys = Int8Array::from_iter_values([0, 0, 1, 2, 0, 1]);
+ fn test_roundtrip_stream_dict_of_list_of_dict_impl<
+ OffsetSize: OffsetSizeTrait,
+ U: ArrowNativeType,
+ >(
+ list_data_type: DataType,
+ offsets: &[U; 5],
+ ) {
+ let values = StringArray::from(vec![Some("a"), None, Some("c"), None]);
Review Comment:
Whilst reviewing #1583 I realised this has the same bug, dictionaries store nulls on the keys not the values. This might not be doing something sensible
Edit: nvm this is actually supported for some reason
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[GitHub] [arrow-rs] viirya commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
viirya commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r853270208
##########
arrow/src/ipc/reader.rs:
##########
@@ -1444,29 +1444,27 @@ mod tests {
assert_eq!(input_batch, output_batch);
}
- #[test]
- fn test_roundtrip_stream_nested_dict_dict() {
+ fn test_test_roundtrip_stream_nested_dict_dict_for_list<
+ OffsetSize: OffsetSizeTrait,
+ U: ArrowNativeType,
+ >(
+ list_data_type: DataType,
+ offsets: &[U; 4],
+ ) {
let values = StringArray::from_iter_values(["a", "b", "c"]);
let keys = Int8Array::from_iter_values([0, 0, 1, 2, 0, 1]);
let dict_array = DictionaryArray::<Int8Type>::try_new(&keys, &values).unwrap();
let dict_data = dict_array.data();
- let value_offsets = Buffer::from_slice_ref(&[0, 2, 4, 6]);
+ let value_offsets = Buffer::from_slice_ref(offsets);
- let list_data_type = DataType::List(Box::new(Field::new_dict(
- "item",
- DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
- false,
- 1,
- false,
- )));
let list_data = ArrayData::builder(list_data_type)
.len(3)
.add_buffer(value_offsets)
.add_child_data(dict_data.clone())
.build()
.unwrap();
- let list_array = ListArray::from(list_data);
+ let list_array = GenericListArray::<OffsetSize>::from(list_data);
let dict_dict_array =
DictionaryArray::<Int8Type>::try_new(&keys, &list_array).unwrap();
Review Comment:
Okay.
##########
arrow/src/datatypes/field.rs:
##########
@@ -131,7 +131,7 @@ impl Field {
DataType::List(field)
| DataType::LargeList(field)
| DataType::FixedSizeList(field, _)
- | DataType::Map(field, _) => collected_fields.push(field),
+ | DataType::Map(field, _) => collected_fields.extend(field.fields()),
Review Comment:
Removed.
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[GitHub] [arrow-rs] tustvold commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r852767908
##########
arrow/src/datatypes/field.rs:
##########
@@ -131,7 +131,7 @@ impl Field {
DataType::List(field)
| DataType::LargeList(field)
| DataType::FixedSizeList(field, _)
- | DataType::Map(field, _) => collected_fields.push(field),
+ | DataType::Map(field, _) => collected_fields.extend(field.fields()),
Review Comment:
Possibly an accidental inclusion from #1584 ?
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[GitHub] [arrow-rs] viirya commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
viirya commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r853270020
##########
arrow/src/ipc/reader.rs:
##########
@@ -1481,4 +1479,35 @@ mod tests {
let output_batch = roundtrip_ipc_stream(&input_batch);
assert_eq!(input_batch, output_batch);
}
+
+ #[test]
+ fn test_roundtrip_stream_nested_dict_dict_in_list() {
+ // list
+ let list_data_type = DataType::List(Box::new(Field::new_dict(
+ "item",
+ DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
+ false,
+ 1,
+ false,
+ )));
+ let offsets: &[i32; 4] = &[0, 2, 4, 6];
Review Comment:
Yea, added a zero-length one.
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[GitHub] [arrow-rs] viirya commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
viirya commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r853269559
##########
arrow/src/ipc/reader.rs:
##########
@@ -1481,4 +1479,35 @@ mod tests {
let output_batch = roundtrip_ipc_stream(&input_batch);
assert_eq!(input_batch, output_batch);
}
+
+ #[test]
+ fn test_roundtrip_stream_nested_dict_dict_in_list() {
+ // list
+ let list_data_type = DataType::List(Box::new(Field::new_dict(
+ "item",
+ DataType::Dictionary(Box::new(DataType::Int8), Box::new(DataType::Utf8)),
+ false,
Review Comment:
Good point. Added a few nulls.
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[GitHub] [arrow-rs] viirya commented on pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
viirya commented on PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#issuecomment-1102854342
Thanks @tustvold.
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[GitHub] [arrow-rs] tustvold commented on a diff in pull request #1585: Read/write nested dictionary under large list in ipc stream reader/writer
Posted by GitBox <gi...@apache.org>.
tustvold commented on code in PR #1585:
URL: https://github.com/apache/arrow-rs/pull/1585#discussion_r853813924
##########
arrow/src/ipc/reader.rs:
##########
@@ -1444,32 +1444,31 @@ mod tests {
assert_eq!(input_batch, output_batch);
}
- #[test]
- fn test_roundtrip_stream_nested_dict_dict() {
- let values = StringArray::from_iter_values(["a", "b", "c"]);
- let keys = Int8Array::from_iter_values([0, 0, 1, 2, 0, 1]);
+ fn test_roundtrip_stream_dict_of_list_of_dict_impl<
+ OffsetSize: OffsetSizeTrait,
+ U: ArrowNativeType,
+ >(
+ list_data_type: DataType,
+ offsets: &[U; 5],
+ ) {
+ let values = StringArray::from(vec![Some("a"), None, Some("c"), None]);
Review Comment:
Whilst reviewing #1583 I realised this has the same bug, dictionaries store nulls on the keys not the values. This might not be doing something sensible
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