RyanLin5967 opened a new issue, #918:
URL: https://github.com/apache/hudi-rs/issues/918
### Is there an existing issue for this?
- [x] I have searched the existing issues
### Description of the bug
Currently, the commit-time filter is skipped when
`hoodie.populate.meta.fields` is false, so an incremental read returns every
row of each file the window rewrote, changed or not. With meta fields populated
the same read returns `[('a', 2)]`.
### Steps To Reproduce
```python
import tempfile
from pyspark.sql import SparkSession
from hudi import HudiTableBuilder, HudiReadOptions, HudiQueryType
spark = (SparkSession.builder
.config("spark.jars.packages",
"org.apache.hudi:hudi-spark4.0-bundle_2.13:1.2.1")
.config("spark.serializer",
"org.apache.spark.serializer.KryoSerializer").getOrCreate())
path = tempfile.mkdtemp()
opts = {"hoodie.table.name": "t", "hoodie.datasource.write.recordkey.field":
"id",
"hoodie.populate.meta.fields": "false"}
for rows in ([("a", 1), ("b", 1)], [("a", 2)]):
spark.createDataFrame(rows, "id STRING, v LONG").write.format("hudi") \
.options(**opts).mode("append").save(path)
t = HudiTableBuilder.from_base_uri(path).build()
c2 = t.get_timeline().get_completed_commits()[1].timestamp
opt =
HudiReadOptions().with_query_type(HudiQueryType.Incremental).with_start_timestamp(c2)
print(sorted((r["id"], r["v"]) for b in t.read(opt) for r in b.to_pylist()))
# [('a', 2), ('b', 1)], should be [('a', 2)]
# b did not change in the second commit, which rewrote the file it shares
with a
spark.read.format("hudi").option("hoodie.datasource.query.type",
"incremental") \
.option("hoodie.datasource.read.begin.instanttime", c2).load(path)
# HoodieException: Incremental queries are not supported when meta fields
are disabled
```
### Expected behavior
The read fails the way Spark's does, since without `_hoodie_commit_time`
nothing tells which rows a commit changed.
### Screenshots / Logs
_No response_
### Software information
- Operating system: macOS 26.7.1, arm64 (Darwin 25.6.0)
- Rust version: none, the PyPI wheel on Python 3.12.16
- Project version: hudi 0.5.0, and main (its CI wheel, 0.6.0.dev0)
- Writer: Hudi 1.2.1 (`hudi-spark4.0-bundle_2.13`) on pyspark 4.0.5, Java
21.0.12.1
### Additional context
_No response_
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