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new b47677999 JDBC: SERIALIZABLE/EntityNotFoundException (#2219)
b47677999 is described below
commit b47677999d646c4adb6accfc489bef0ea5ab8512
Author: Robert Stupp <[email protected]>
AuthorDate: Tue Aug 5 13:52:25 2025 +0200
JDBC: SERIALIZABLE/EntityNotFoundException (#2219)
With serializable isolation level, if either the primary-key or the
check-constraint are violated, the lookup of the conflicting entity is not
guaranteed to yield a non-null result (transaction start matters). This changes
works around this situation w/ serializable isolation.
---
.../relational/jdbc/JdbcBasePersistenceImpl.java | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git
a/persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/JdbcBasePersistenceImpl.java
b/persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/JdbcBasePersistenceImpl.java
index 8e2f905d6..7391d1d5e 100644
---
a/persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/JdbcBasePersistenceImpl.java
+++
b/persistence/relational-jdbc/src/main/java/org/apache/polaris/persistence/relational/jdbc/JdbcBasePersistenceImpl.java
@@ -183,11 +183,17 @@ public class JdbcBasePersistenceImpl implements
BasePersistence, IntegrationPers
entity.getParentId(),
entity.getTypeCode(),
entity.getName());
- throw new EntityAlreadyExistsException(existingEntity, e);
- } else {
- throw new RuntimeException(
- String.format("Failed to write entity due to %s",
e.getMessage()), e);
+ // This happens in two scenarios:
+ // 1. PRIMARY KEY violated
+ // 2. UNIQUE CONSTRAINT on (realm_id, catalog_id, parent_id,
type_code, name) violated
+ // With SERIALIZABLE isolation, the conflicting entity may _not_ be
visible and
+ // existingEntity can be null, which would cause an NPE in
+ // EntityAlreadyExistsException.message().
+ throw new EntityAlreadyExistsException(
+ existingEntity != null ? existingEntity : entity, e);
}
+ throw new RuntimeException(
+ String.format("Failed to write entity due to %s", e.getMessage()),
e);
}
} else {
Map<String, Object> params =
