Grzegorz Grzybek created CAMEL-13951:
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Summary: JdbcAggregationRepository doesn't work with PostgreSQL
Key: CAMEL-13951
URL: https://issues.apache.org/jira/browse/CAMEL-13951
Project: Camel
Issue Type: Bug
Components: camel-sql
Affects Versions: 3.0.0.RC1, 2.24.1
Reporter: Grzegorz Grzybek
Assignee: Grzegorz Grzybek
See:
*
https://www.postgresql.org/message-id/200609241203.59292.ralf.wiebicke%40exedio.com
*
https://groups.google.com/forum/#!msg/comp.databases.postgresql/NuXGXdFbA4g/LQ97ahowmxkJ
*
https://www.progress.com/blogs/solution-to-current-transaction-is-aborted-error-for-postgresql-compatibility-with-odbc-jdbc
The problem is that JdbcAggregationRepository relies heavily on spring-jdbc's
throwing org.springframework.dao.DataIntegrityViolationException according to
its sql exception mapping.
By default, DataIntegrityViolationException is thrown if SQLState starts with
{{23}}. Check https://www.postgresql.org/docs/10/errcodes-appendix.html and see
that:
bq. 23505: unique_violation
The _problem_ specific to PostgreSQL is that hitting such exception makes the
connection (and surrounding Spring transaction) unusable. There's no way to
_repeat_ an attempt to insert (or even check current) state of aggregation,
because PostgreSQL will immediately throw:
{noformat}
Caused by: org.postgresql.util.PSQLException: ERROR: current transaction is
aborted, commands ignored until end of transaction block
at
org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2468)
at
org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2211)
at
org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:309)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:446)
...
{noformat}
With SQLState - {{25P02}} == "in_failed_sql_transaction".
The expected (by PostgreSQL) behavior is to rollback current transaction and
start over.
We're however in (potentially nested) TransactionTemplate and _rollback only_
status is beyond (easy) control.
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