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Posted to derby-dev@db.apache.org by "Kathey Marsden (JIRA)" <ji...@apache.org> on 2010/03/24 18:47:27 UTC
[jira] Commented: (DERBY-4264) highly intermittent
java.lang.ClassCastException:
[[Lorg.apache.derby.iapi.store.access.Qualifier; incompatible with
org.apache.derby.iapi.types.DataValueDescriptor doing simple select
[ https://issues.apache.org/jira/browse/DERBY-4264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849308#action_12849308 ]
Kathey Marsden commented on DERBY-4264:
---------------------------------------
There is another user seeing this issue with 10.2 on z/OS with this jvm
java version "1.5.0"
Java(TM) 2 Runtime Environment, Standard Edition (build
pmz31devifx-20090129 (SR9-1))
IBM J9 VM (build 2.3, J2RE 1.5.0 IBM J9 2.3 z/OS s390-31
j9vmmz3123ifx-20090128 (JIT enabled)
J9VM - 20090126_28859_bHdSMr
JIT - 20081112_1511ifx1_r8
GC - 200811_07)
JCL - 20090128
They have a fairly reliable reproduction at the site and have found that it does not reproduce with JIT off. There is a service refresh 11 available for IBM 1.5 on z/OS so I suggested that they upgrade and then try JIT diagnostics to narrow down the issue.
http://publib.boulder.ibm.com/infocenter/javasdk/v6r0/topic/com.ibm.java.doc.diagnostics.60/diag/tools/jitpd_failing_method.html?resultof=%22%66%61%69%6c%69%6e%67%22%20%22%66%61%69%6c%22%20%22%6d%65%74%68%6f%64%22%20
> highly intermittent java.lang.ClassCastException: [[Lorg.apache.derby.iapi.store.access.Qualifier; incompatible with org.apache.derby.iapi.types.DataValueDescriptor doing simple select
> ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-4264
> URL: https://issues.apache.org/jira/browse/DERBY-4264
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.2.2.0
> Environment: Embedded Derby 10.2.2.0 - (485682)
> z/OS J2RE 1.5.0 IBM z/OS build pmz31dev-20081210 (SR9-0)
> Reporter: Kathey Marsden
> Assignee: Kathey Marsden
> Attachments: acf81e0010x0121xcb69x9b94x0000000eb0100.java, derby-4264_10.2_diag_diff.txt, derby-4264_10.2_diag_diff.txt
>
>
> I got a report from a user for a highly intermittent ClassCastException doing a select. Below is the stack trace:
> java.lang.ClassCastException:
> [[Lorg.apache.derby.iapi.store.access.Qualifier; incompatible
> with org.apache.derby.iapi.types.DataValueDescriptor
> at
> org.apache.derby.impl.sql.execute.GenericQualifier.getOrderable(
> Unknown Source)
> at
> org.apache.derby.impl.sql.execute.NoPutResultSetImpl.clearOrdera
> bleCache(Unknown Source)
> at
> org.apache.derby.impl.sql.execute.BulkTableScanResultSet.openSca
> nController(Unknown Source)
> at
> org.apache.derby.impl.sql.execute.TableScanResultSet.openCore(Un
> known Source)
> at
> org.apache.derby.impl.sql.execute.BulkTableScanResultSet.openCor
> e(Unknown Source)
> at
> org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(U
> nknown Source)
> at
> org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unkno
> wn Source)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unkno
> wn Source)
> at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.EmbedStatement.executeQuery(Unknown
> Source)
> I don't have a reproduction yet but have some information on the schema and query that occasionally fails: The data here is contrived, I don't know the actual data in the table at the time of the failure. The column names have changed, but represent the same types.
> CREATE TABLE "APP"."RESOURCE"
> (
> "AUUID" CHAR(36) NOT NULL,
> "BUUID" CHAR(36) NOT NULL,
> "CUUID" CHAR(36) NOT NULL,
> "DUUID" CHAR(36) NOT NULL,
> "SECTION" CHAR(6) NOT NULL,
> "TYPE" CHAR(48) NOT NULL,
> "LASTUPDATE" TIMESTAMP NOT NULL
> );
> ALTER TABLE "APP"."RESOURCE" ADD CONSTRAINT "SQL060817095529130" PRIMARY KEY ("AUUID", "BUUID", "SECTION");
> -- Not sure of the actual data. This data was made up so the query would get a match.
> INSERT INTO RESOURCE VALUES ('3b2c2edc-1401-0000-0080-c38634aef3ba', '3b2c2edc-1401-0000-0080-c38634aef3bb', '2be1347d-2001-0000-0080-8cd524f0d034', '2be1347d-2001-0000-0080-8cd524f0d033', 'GENRAL', 'NodeType', CURRENT_TIMESTAMP);
> SELECT * FROM RESOURCE WHERE
> SECTION='GENRAL' AND
> TYPE='NodeType' AND
> DUUID='2be1347d-2001-0000-0080-8cd524f0d033' AND
> BUUID='3b2c2edc-1401-0000-0080-c38634aef3bb';
> This has happened to just one user on z/OS with J2RE 1.5.0 IBM z/OS build pmz31dev-20081210 (SR9-0). Other users running the same application on the same versions have not seen this issue. This particular user has disabled the functionality causing the problem for now, so I am hoping we can glean some information from code inspection and debugging this sample query to see where the cast might go wrong.
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