moomindani opened a new pull request #29330:
URL: https://github.com/apache/spark/pull/29330
### What changes were proposed in this pull request?
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This pull-request is to add support for reading ORC/Parquet files with
SymlinkTextInputFormat in Apache Spark.
### Why are the changes needed?
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Hive style symlink (SymlinkTextInputFormat) is commonly used in different
analytic engines including prestodb and prestosql.
Currently SymlinkTextInputFormat works with JSON/CSV files but does not work
with ORC/Parquet files in Apache Spark (and Apache Hive).
On the other hand, prestodb and prestosql support SymlinkTextInputFormat
with ORC/Parquet files.
This pull-request is to add support for reading ORC/Parquet files with
SymlinkTextInputFormat in Apache Spark.
See details in the JIRA. SPARK-32432
### Does this PR introduce _any_ user-facing change?
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Yes.
Currently Spark returns exceptions if users try to use
SymlinkTextInputFormat with ORC/Parquet files.
With this patch, Spark can handle symlink which indicates locations of
ORC/Parquet files.
### How was this patch tested?
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I added a new test suite `SymlinkSuite` and confirmed it passed.
```
$ ./build/sbt "project hive" "test-only
org.apache.spark.sql.hive.SymlinkSuite"
```
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