kevinjqliu opened a new issue, #18601:
URL: https://github.com/apache/iceberg/issues/18601
### Apache Iceberg version
1.12.0 (latest release)
### Query engine
Spark
### Please describe the bug 🐞
Vectorized reads of a projected shredded VARIANT fail when `SparkBatch`
can't detect shredding at plan time. Detection relies on the
`write.parquet.shred-variants` table property and per-file variant lower
bounds. Shredding can be enabled via session conf or write option, and shredded
arrays never get variant bounds.
**Repro** (Spark 4.1, main):
```sql
CREATE TABLE t (id BIGINT, v VARIANT) USING iceberg TBLPROPERTIES
('format-version'='3');
SET spark.sql.iceberg.shred-variants=true;
INSERT INTO t VALUES (1, parse_json('{"a": [1, 2]}')), (2, parse_json('{"a":
[3]}'));
SELECT id, v FROM t; -- fails
SET spark.sql.iceberg.vectorization.enabled=false;
SELECT id, v FROM t; -- OK
```
```
java.lang.UnsupportedOperationException: Unsupported variant: shredded
typed_value primitive
at
org.apache.iceberg.arrow.vectorized.VectorizedVariantVisitor.primitive(VectorizedVariantVisitor.java:97)
...
at
org.apache.iceberg.spark.data.vectorized.VectorizedSparkParquetReaders.buildReader(VectorizedSparkParquetReaders.java:61)
```
Originally raised in #17736 (closed unmerged). Related to #18430, which
covers the unprojected case; its fix #18434 doesn't address this one.
### Willingness to contribute
- [ ] I can contribute a fix for this bug independently
- [ ] I would be willing to contribute a fix for this bug with guidance from
the Iceberg community
- [ ] I cannot contribute a fix for this bug at this time
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
