Github user dongjoon-hyun commented on the issue:
https://github.com/apache/spark/pull/19060
In ORC GitHub, up to my knowledge, this is the highest level.
```
val reader = new OrcInputFormat[OrcStruct]().createRecordReader(split,
attemptContext)
... reader.nextKeyValue()
... reader.getCurrentValue
... row.getFieldValue(0).asInstanceOf[IntWritable].get
```
Actually, I have one idea. If we support
[unhandledFilters](https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/sources/interfaces.scala#L237)
in data source testing by SQLConf, we can do in Spark level like *value limit*
case. How do you think about that? May I try that way?
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