HyukjinKwon opened a new pull request, #57036:
URL: https://github.com/apache/spark/pull/57036
### What changes were proposed in this pull request?
In `OrcSuite.testBloomFilterCreation` and `testSelectiveDictionaryEncoding`,
also close the ORC `Reader` (returned by `OrcFile.createReader`) in the
`finally` block — previously only the derived `RecordReader` was closed.
### Why are the changes needed?
Both helpers do:
```scala
val reader = OrcFile.createReader(orcFilePath, readerOptions)
var recordReader: RecordReaderImpl = null
try {
recordReader = reader.rows.asInstanceOf[RecordReaderImpl]
...
} finally {
if (recordReader != null) recordReader.close() // Reader itself is never
closed
}
```
The `Reader` holds the file stream opened in
`org.apache.orc.impl.ReaderImpl.extractFileTail`, so it leaks.
`SharedSparkSessionBase.afterEach` asserts no open streams
(`DebugFilesystem.assertNoOpenStreams`) and aborts the whole suite when the
leaked stream is not closed within its wait window:
```
org.apache.spark.sql.execution.datasources.orc.OrcSourceV1Suite *** ABORTED
***
... There are 1 possibly leaked file streams.
(SharedSparkSession.scala:197)
```
The leaked-connection stack (logged by `DebugFilesystem`) points at
`org.apache.orc.impl.ReaderImpl.extractFileTail` / `OrcFile.createReader`. This
flakes `OrcSourceV1Suite`/`OrcSourceV2Suite` (observed repeatedly on
`build_java21` for branch-4.0). Closing the `Reader` fixes the leak.
### Does this PR introduce _any_ user-facing change?
No, test-only.
### How was this patch tested?
Ran `OrcSourceV1Suite` and `OrcSourceV2Suite` on GitHub Actions.
- **Before (failing on `apache/spark` `build_java21` / branch-4.0):**
https://github.com/apache/spark/actions/runs/28766468775/job/85293800991 —
`OrcSourceV1Suite *** ABORTED ***`, `There are 1 possibly leaked file streams.
(SharedSparkSession.scala:197)`.
- **After (passing with this change):**
https://github.com/HyukjinKwon/spark-agent6/actions/runs/28781272553/job/85337180343
— `OrcSourceV1Suite` + `OrcSourceV2Suite`: `Tests: succeeded 72, failed 0`,
`All tests passed.` (no leaked-stream abort).
### Was this patch authored or co-authored using generative AI tooling?
Yes.
This pull request and its description were written by Isaac.
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