db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (DERBY-5166) Database internal lock timeouts do not return exceptions on the executeUpdate of a jdbc Statement object
Date Wed, 26 Feb 2014 22:41:21 GMT

    [ https://issues.apache.org/jira/browse/DERBY-5166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13913639#comment-13913639
] 

Myrna van Lunteren commented on DERBY-5166:
-------------------------------------------

output with 10.6.2.1 - (999685):
$ java XAReproD5166
2014-02-26 22:35:47.784 GMT : Apache Derby Network Server - 10.6.2.1 - (999685) started and
ready to accept connections on port 1597
creating or connecting to the database
creating tab (i int, j int) and inserting a row (1,0)
1. create two xids (xid1, xid2) with same gtrid and different branchqualifiers.
2. conn1 = get XA connection
3. xaResource1 = conn1.getXAResource()
4. xaResource1.start(xid1,XAResource.TMNOFLAGS)
5. update row X (set j=1 where i=1) via conn1 (using a Statement.executeUpdate call)
6. xaResource2 = conn2.getXAResource()
7. xaResource2.start(xid2,XAResource.TMNOFLAGS)
8. update row X (set j=2 where i=1) via conn2
Expected Exception 2 java.sql.SQLTransactionRollbackException: DERBY SQL error: SQLCODE: -1,
SQLSTATE: 40XL1, SQLERRMC: 40XL1
9. check the value of X via conn1
found the row: 1, 1
Connection ok. got right value
Exception in thread "main" java.sql.SQLNonTransientConnectionException: A network protocol
error was encountered and the connection has been terminated: the requested command encountered
an unarchitected and implementation-specific condition for which there was no architected
message (additional information may be available in the derby.log file on the server)
        at org.apache.derby.client.am.SQLExceptionFactory40.getSQLException(Unknown Source)
        at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
        at org.apache.derby.client.am.Connection.createStatement(Unknown Source)
        at org.apache.derby.client.am.LogicalConnection.createStatement(Unknown Source)
        at XAReproD5166.checkConn(XAReproD5166.java:126)
        at XAReproD5166.main(XAReproD5166.java:106)
Caused by: org.apache.derby.client.am.SqlException: A network protocol error was encountered
and the connection has been terminated: the requested command encountered an unarchitected
and implementation-specific condition for which there was no architected message (additional
information may be available in the derby.log file on the server)
        at org.apache.derby.client.am.SqlException.copyAsUnchainedSQLException(Unknown Source)
        at org.apache.derby.client.am.Sqlca.chainDeferredExceptionsToAgentOrAsConnectionWarnings(Unknown
Source)
        at org.apache.derby.client.am.Sqlca.getJDBCMessage(Unknown Source)
        at org.apache.derby.client.am.SqlException.getMessage(Unknown Source)
        at org.apache.derby.client.am.SqlException.getSQLException(Unknown Source)
        at org.apache.derby.client.am.Statement.executeUpdate(Unknown Source)
        at XAReproD5166.main(XAReproD5166.java:84)


> Database internal lock timeouts do not return exceptions on the executeUpdate of a jdbc
Statement object
> --------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-5166
>                 URL: https://issues.apache.org/jira/browse/DERBY-5166
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.6.2.1
>         Environment: Mac OSX with Java
>            Reporter: Guy Pardon
>              Labels: derby_triage10_9
>         Attachments: XAReproD5166.java
>
>
> Steps to reproduce:
> 1. create two Xids (xid1, xid2) with the _same_ gtrid value and _different_ branchqualifiers
> 2. conn1 = get XA connection
> 3. xaResource1 = conn1.getXAResource()
> 4. xaResource1.start(xid1,XAResource.TMNOFLAGS)
> 5. update row X via conn1 (using a Statement.executeUpdate call)
> 6. xaResource2 = conn2.getXAResource()
> 7. xaResource2.start(xid2,XAResource.TMNOFLAGS)
> 8. update row X via conn2
> 9. check the value of X via conn1
> Observed behavior: step 8 hangs for a while (I assume it blocks on a lock and times out)
and step 9 returns the value from _before_ step 5 - i.e., the unchanged, original value.
> The only hypothesis I find consistent with this is the following:
> -step 8 blocks and returns after the transactions are rolled back (and the locks released)
> -step 9 then returns the value after rollback, i.e. the original value
> If this is the case, then step 8 should not return OK but rather throw an SQLException



--
This message was sent by Atlassian JIRA
(v6.1.5#6160)

Mime
View raw message