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From "Myrna van Lunteren (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DERBY-5421) NullPointerException during system.nstest.utils.Dbutil.update_one_row
Date Tue, 20 Sep 2011 20:06:09 GMT

     [ https://issues.apache.org/jira/browse/DERBY-5421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Myrna van Lunteren updated DERBY-5421:
--------------------------------------

    Environment: Windows XP (embedded), SUSE Linux (10) (client/server), both with ibm 1.6
SR9 FP1

> NullPointerException during system.nstest.utils.Dbutil.update_one_row
> ---------------------------------------------------------------------
>
>                 Key: DERBY-5421
>                 URL: https://issues.apache.org/jira/browse/DERBY-5421
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.8.2.1
>         Environment: Windows XP (embedded), SUSE Linux (10) (client/server), both with
ibm 1.6 SR9 FP1
>            Reporter: Myrna van Lunteren
>
> The nstest - both embedded (on Windows XP) and client/server configuration (on SUSE Linux
10) ran into a NullPointerException during the call to update_one_row.
> The test only ran for 5 days, vs. 10.8.1.2 8 days, and I've never seen this error before:
> sample (console) output:
> total memory: 20962816 free: 3036264 Wed Sep 14 00:28:00 PDT 2011
> TObj -->NULL error message detected
> TObj -->Here is the NULL exception - java.lang.NullPointerException
> TObj -->Stack trace of the NULL exception - java.lang.NullPointerException
>         at org.apache.derbyTesting.system.nstest.utils.DbUtil.update_one_row(DbUtil.java:275)
>         at org.apache.derbyTesting.system.nstest.tester.TesterObject.doIUDOperation(TesterObject.java:162)
>         at org.apache.derbyTesting.system.nstest.tester.Tester2.startTesting(Tester2.java:109)
>         at org.apache.derbyTesting.system.nstest.NsTest.run(NsTest.java:555)
> TObj -->At this point - executing update_one_row, exception thrown was : null
> TObj -->NULL error message detected
> TObj -->Here is the NULL exception - java.lang.NullPointerException
> TObj -->Stack trace of the NULL exception - java.lang.NullPointerException
>         at org.apache.derbyTesting.system.nstest.utils.DbUtil.update_one_row(DbUtil.java:275)
>         at org.apache.derbyTesting.system.nstest.tester.TesterObject.doIUDOperation(TesterObject.java:162)
>         at org.apache.derbyTesting.system.nstest.tester.Tester1.startTesting(Tester1.java:118)
>         at org.apache.derbyTesting.system.nstest.NsTest.run(NsTest.java:551)
> TObj -->At this point - executing update_one_row, exception thrown was : null
>  
> Looking at the source of nstest.utils.DbUtil.update_one_row it's calling ps2.close():
> ----------------------------
> ....
> 		column = colnames[ind % NUMTYPES]; // randomly gets one of the columns
> 		// of the table
> 		
> 		try {
> 			
> 			ps2 = conn.prepareStatement(" update nstesttab set " + column
> 					+ " = ? " + " where serialkey = " + skey);
> 			
> 		} catch (Exception e) {
> 			ps2.close();
> 			printException(
> 					"closing update prepared stmt in dbUtil.update_one_row() ",
> 					e);
> 			return rowsUpdated;
> 		}
> ....
> ----------------------------
> At first glance, this seems a test issue, but I think it possible the test is hiding
something more interesting, so I'm not marking this as component 'test'.

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