Github user gatorsmile commented on a diff in the pull request:
https://github.com/apache/spark/pull/17800#discussion_r113971640
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JdbcUtils.scala
---
@@ -653,7 +653,13 @@ object JdbcUtils extends Logging {
val cause = e.getNextException
if (cause != null && e.getCause != cause) {
if (e.getCause == null) {
- e.initCause(cause)
+ try {
+ e.initCause(cause)
+ } catch {
+ // cause may have been explicitly initialized to null, in
which case this
--- End diff --
Based on my understanding, `IllegalStateException` is not caused by the
value of `cause`.
```JAVA
@throws IllegalStateException if this throwable was
created with {@link #Throwable(Throwable)} or
{@link #Throwable(String,Throwable)}, or this method has already
been called on this throwable.
```
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