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From "Dag H. Wanvik (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3678) StackOverflowException in deadlock trace
Date Tue, 10 Jun 2008 21:03:45 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3678?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Dag H. Wanvik updated DERBY-3678:
---------------------------------

    Attachment: derby-3678-2.stat
                derby-3678-2.diff

Thanks for looking at this, Knut Anders. Fixed the javadoc and the
accidental whitespace thing.  As for your second, comment, I agree it
is probably better to use the idiom for reading the index row under
read uncommitted mode, so I did that.

Additionally, I modified the existing sanity code which asserts that
the base row is always there to just run when repeatable read is used,
and added an extra check for this case for read uncommitted mode in
which case I just throw an error (RAWSTORE_RECORD_VANISHED).  This
should be very unlikely, but if it happens we have seen that TimeOut
swallows exceptions when building TableNameInfo and prints the lock
table even without table information, so I think it is ok. We could
possibly catch this exception in hashAllTableDescriptorsByTableId and
just skip that table (which has gone anyway since its schema has
gone...:), but I didn't.

I also added javadoc to say that only repeatable read (normal case)
and read uncommitted are supported (in the new signatures).

Re-running tests.

> StackOverflowException in deadlock trace
> ----------------------------------------
>
>                 Key: DERBY-3678
>                 URL: https://issues.apache.org/jira/browse/DERBY-3678
>             Project: Derby
>          Issue Type: Bug
>    Affects Versions: 10.3.2.1
>         Environment: (this is actually in version 10.3.2.2)
> MacOS 10, JDK 1.6
>            Reporter: geoff hendrey
>            Assignee: Dag H. Wanvik
>             Fix For: 10.5.0.0
>
>         Attachments: derby-3678-1.diff, derby-3678-1.stat, derby-3678-2.diff, derby-3678-2.stat
>
>
> I am getting a deadlock in SYSTABLE. When I turn on Dderby.locks.deadlockTrace=true,
I get a StackOverflowException
> Derby version The Apache Software Foundation - Apache Derby - 10.3.2.2
> - (618335): instance 80220011-0119-f93f-b912-00000000bced
> on database directory /db/domains/geoff  
> Database Class Loader started - derby.database.classpath=''
> 2008-05-17 23:44:36.380
> GMT Thread[btpool0-2,5,main] (XID = 7556), (SESSIONID = 4), (DATABASE =
> domains/geoff), (DRDAID = null), Cleanup action starting
> java.lang.StackOverflowError
>         at org.apache.derby.impl.sql.execute.GenericExecutionFactory.getValueRow(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.SYSCONGLOMERATESRowFactory.makeRow(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.SYSCONGLOMERATESRowFactory.makeEmptyRow(Unknown
> Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.hashAllConglomerateDescriptorsByNumber(Unknown
> Source)
>         at org.apache.derby.impl.services.locks.TableNameInfo.<init>(Unknown Source)
>         at org.apache.derby.impl.services.locks.Timeout.buildLockTableString(Unknown
Source)
>         at org.apache.derby.impl.services.locks.Timeout.createException(Unknown Source)
>         at org.apache.derby.impl.services.locks.Timeout.buildException(Unknown Source)
>         at org.apache.derby.impl.services.locks.ConcurrentLockSet.lockObject(Unknown
Source)
>         at org.apache.derby.impl.services.locks.AbstractPool.lockObject(Unknown Source)
>         at org.apache.derby.impl.services.locks.ConcurrentPool.lockObject(Unknown Source)
>         at org.apache.derby.impl.store.raw.xact.RowLocking3.lockRecordForRead(Unknown
Source)
>         at org.apache.derby.impl.store.access.heap.HeapController.lockRow(Unknown Source)
>         at org.apache.derby.impl.store.access.heap.HeapController.lockRow(Unknown Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3.lockRowOnPage(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3._lockScanRow(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLockingRR.lockScanRow(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(Unknown
Source)
>         at org.apache.derby.impl.store.access.btree.BTreeScan.next(Unknown Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getDescriptorViaIndex(Unknown
> Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.locateSchemaRow(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getSchemaDescriptor(Unknown
> Source)
>         at org.apache.derby.impl.sql.catalog.SYSTABLESRowFactory.buildDescriptor(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.hashAllTableDescriptorsByTableId(Unknown
> Source)
>         at org.apache.derby.impl.services.locks.TableNameInfo.<init>(Unknown Source)
>         at org.apache.derby.impl.services.locks.Timeout.buildLockTableString(Unknown
Source)
>         at org.apache.derby.impl.services.locks.Timeout.createException(Unknown Source)
>         at org.apache.derby.impl.services.locks.Timeout.buildException(Unknown Source)
>         at org.apache.derby.impl.services.locks.ConcurrentLockSet.lockObject(Unknown
Source)
>         at org.apache.derby.impl.services.locks.AbstractPool.lockObject(Unknown Source)
>         at org.apache.derby.impl.services.locks.ConcurrentPool.lockObject(Unknown Source)
>         at org.apache.derby.impl.store.raw.xact.RowLocking3.lockRecordForRead(Unknown
Source)
>         at org.apache.derby.impl.store.access.heap.HeapController.lockRow(Unknown Source)
>         at org.apache.derby.impl.store.access.heap.HeapController.lockRow(Unknown Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3.lockRowOnPage(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3._lockScanRow(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IRowLockingRR.lockScanRow(Unknown
> Source)
>         at org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(Unknown
Source)
>         at org.apache.derby.impl.store.access.btree.BTreeScan.next(Unknown Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getDescriptorViaIndex(Unknown
> Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.locateSchemaRow(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getSchemaDescriptor(Unknown
> Source)
>         at org.apache.derby.impl.sql.catalog.SYSTABLESRowFactory.buildDescriptor(Unknown
Source)
>         at org.apache.derby.impl.sql.catalog.DataDictionaryImpl.hashAllTableDescriptorsByTableId(Unknown
> Source)

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