wForget opened a new pull request, #47211:
URL: https://github.com/apache/spark/pull/47211
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### What changes were proposed in this pull request?
Pass actual exception for url_decode.
### Why are the changes needed?
Currently url_decode function ignores actual exception, which contains
information that is useful for quickly locating the problem.
Like executing this sql:
```
select url_decode('https%3A%2F%2spark.apache.org');
```
We only get the error message:
```
org.apache.spark.SparkIllegalArgumentException: [CANNOT_DECODE_URL] The
provided URL cannot be decoded: https%3A%2F%2spark.apache.org. Please ensure
that the URL is properly formatted and try again.
at
org.apache.spark.sql.errors.QueryExecutionErrors$.illegalUrlError(QueryExecutionErrors.scala:376)
at
org.apache.spark.sql.catalyst.expressions.UrlCodec$.decode(urlExpressions.scala:118)
at
org.apache.spark.sql.catalyst.expressions.UrlCodec.decode(urlExpressions.scala)
```
However, the actual useful exception information is ignored:
```
java.lang.IllegalArgumentException: URLDecoder: Illegal hex characters in
escape (%) pattern - Error at index 1 in: "2s"
```
After this pr we will get:
```
org.apache.spark.SparkIllegalArgumentException: [CANNOT_DECODE_URL] The
provided URL cannot be decoded: https%3A%2F%2spark.apache.org. Please ensure
that the URL is properly formatted and try again. SQLSTATE: 22546
at
org.apache.spark.sql.errors.QueryExecutionErrors$.illegalUrlError(QueryExecutionErrors.scala:372)
at
org.apache.spark.sql.catalyst.expressions.UrlCodec$.decode(urlExpressions.scala:119)
at
org.apache.spark.sql.catalyst.expressions.UrlCodec.decode(urlExpressions.scala)
...
Caused by: java.lang.IllegalArgumentException: URLDecoder: Illegal hex
characters in escape (%) pattern - Error at index 1 in: "2s"
at java.base/java.net.URLDecoder.decode(URLDecoder.java:237)
at java.base/java.net.URLDecoder.decode(URLDecoder.java:147)
at
org.apache.spark.sql.catalyst.expressions.UrlCodec$.decode(urlExpressions.scala:116)
... 135 more
```
### Does this PR introduce _any_ user-facing change?
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No
### How was this patch tested?
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unit test
### Was this patch authored or co-authored using generative AI tooling?
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No
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