Hi all,
I am resurrecting this old thread (for which I have found an even older
reference [1]), because I have recently tried with the latest 8.x MySQL
JDBC driver, which has removed the 'relaxAutoCommit' option [2]; as a
result, now I am stuck exactly with the same error explained below.
I have tried by locally removing the lines
https://github.com/apache/openjpa/blob/2.4.x/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/schema/SchemaTool.java#L1254-L1269
and everything works like a charm.
What would be the simplest way to make the lines above optional by
configuration?
Regards.
[1]
https://lists.apache.org/thread.html/53b0e83f37aa9a8f9c06a67fb7a948487efe1a6941d4b9fae1404858@1394724819@%3Cusers.openjpa.apache.org%3E
[2]
https://dev.mysql.com/doc/connector-j/8.0/en/connector-j-properties-changed.html
On 13/06/2017 12:57, Romain Manni-Bucau wrote:
My memory can be corrupted but what i had in mind was to add a flag to say
to use autocommit or not (let's call it schemaToolMode = {AUTOCOMMIT,
COMMIT, BOTH}) and then in the persistence.xml
you can configure the dictionnary with this schemaToolMode property (don't
recall if getters/setters are mandatory but not a real blocker ;))
2017-06-13 12:44 GMT+02:00 Francesco Chicchiriccò <ilgro...@apache.org>:
On 13/06/2017 12:37, Romain Manni-Bucau wrote:
Hi Francesco,
kind of have the same analyzis as you. Only mitigation I can do is some
pool enforce the autocommit mode and therefore autocommit is ignored and
you still need commit(). Anyway since we have the dictionnary i guess we
can add a setting there?
Hi Romain,
this makes sense to me, even though I have no idea about how to reference
a specific Dictionary setting from SchemaTool...
Regards.
2017-06-13 12:32 GMT+02:00 Francesco Chicchiriccò <ilgro...@apache.org>:
Hi all,
at Syncope we have recently switched the application-managed db pool to
HikariCP [1]; our (quite intensive, I'd say) tests with H2 and PostgresQL
showed no issues at all.
Today I am testing MySQL and run unfortunately into a blocking issue:
when
running the OpenJPA SchemaTool as part of Syncope webapp initialization,
an
exception is reported by HikariCP:
MySQLNonTransientConnectionException: Can't call rollback when
autocommit=true
No tables are created, and the OpenJPA initialization fails.
The reported stacktrace points to [2], from which I would say that the
exception is quite right. The strange thing is that when using other
connection pool libraries as Commons DBCP2, everything works fine.
Can someone explain why rollback is explicitly invoked after setting
autocommit to true? (same applies to the commit statement few lines
below).
Shouldn't it be better to make such behavior optional, anyway?
FYI, I have temporarily solved my issue by adding
relaxAutoCommit=true
to the JDBC URL, and all the integration tests run fine.
Please let me have your feedback, thanks.
Regards.
[1] https://issues.apache.org/jira/browse/SYNCOPE-1084
[2]
https://github.com/apache/openjpa/blob/2.4.x/openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/schema/SchemaTool.java#L1267
--
Francesco Chicchiriccò
Tirasa - Open Source Excellence
http://www.tirasa.net/
Member at The Apache Software Foundation
Syncope, Cocoon, Olingo, CXF, OpenJPA, PonyMail
http://home.apache.org/~ilgrosso/
