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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3844) ASSERT failure in BasePage.unlatch() when running LobStreamsTest
Date Wed, 10 Feb 2010 16:31:28 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3844?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan updated DERBY-3844:
-----------------------------------

    Attachment: derby-3844-1a-disallow_multiple_accesses.stat
                derby-3844-1a-disallow_multiple_accesses.diff

Patch 1a disallows accessing a LOB column more than once.
High level patch description:
 o modified message XCL18, and deleted all the translations of it
 o added DataValueDescriptor.hasStream, which makes it clearer where we actually want to fetch
the stream and where we just want to check if there is a stream or not
   - currently only SQLBlob and SQLClob override the default implementation
 o replaced several dvd.getStream() != null  with dvd.hashStream()
   - as part of this I also refactored some code in  EmbedBlob
 o renamed variables and methods for checking if a column has already been accessed
 o added checks if the LOB column has already been accessed in getBlob and getBlob, both in
the embedded and the client driver
    - also added some more comments
    - made the boolean array (columnUsedFlags_) be lazily initialized in the client driver
(this included basically rewriting two small methods)
 o modified a few tests failing because of the new restriction
 o added two regression tests in LobStreamsTest

I will also have to write a release note for this fix, as existing applications may be affected
by it.

I'm running the full regression tests now, will post the result when they're done.
Patch ready for review.

> ASSERT failure in BasePage.unlatch() when running LobStreamsTest
> ----------------------------------------------------------------
>
>                 Key: DERBY-3844
>                 URL: https://issues.apache.org/jira/browse/DERBY-3844
>             Project: Derby
>          Issue Type: Bug
>          Components: Store
>    Affects Versions: 10.5.1.1, 10.6.0.0
>         Environment: Solaris 10, AMD Opteron with 2 CPUs, Java(TM) SE Runtime Environment
(build 1.6.0_06-b02), Derby trunk revision 686755
>            Reporter: Knut Anders Hatlen
>         Attachments: derby-3844-1a-disallow_multiple_accesses.diff, derby-3844-1a-disallow_multiple_accesses.stat,
derby-3844-1a-repro_test.diff
>
>
> I saw this failure when running suites.All to test the patch nested_transaction_v2.diff
which is posted on DERBY-3693. The failure did not occur when I reran the test, and I don't
believe the patch should have any effect on the code that failed. The ASSERT that is triggered
is this one (which indicates that we're trying to unlatch a page that's not latched):
> 		if (SanityManager.DEBUG) {
> 			SanityManager.ASSERT(isLatched());
> 		}
> Here's the full stack trace and thread dump:
> 1) testBlobWrite3Param(org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest)org.apache.derby.shared.common.sanity.AssertFailure:
ASSERT FAILED
> 	at org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:98)
> 	at org.apache.derby.impl.store.raw.data.BasePage.unlatch(BasePage.java:1319)
> 	at org.apache.derby.impl.store.raw.data.OverflowInputStream.fillByteHolder(OverflowInputStream.java:152)
> 	at org.apache.derby.impl.store.raw.data.BufferedByteHolderInputStream.read(BufferedByteHolderInputStream.java:44)
> 	at java.io.DataInputStream.read(DataInputStream.java:132)
> 	at org.apache.derby.impl.jdbc.PositionedStoreStream.read(PositionedStoreStream.java:106)
> 	at org.apache.derby.impl.jdbc.AutoPositioningStream.read(AutoPositioningStream.java:113)
> 	at org.apache.derby.impl.jdbc.UpdatableBlobStream.read(UpdatableBlobStream.java:194)
> 	at org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.readBytesFromStream(LobStreamsTest.java:463)
> 	at org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.compareLob2File(LobStreamsTest.java:488)
> 	at org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.testBlobWrite3Param(LobStreamsTest.java:130)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:104)
> 	at junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
> 	at junit.extensions.TestSetup$1.protect(TestSetup.java:21)
> 	at junit.extensions.TestSetup.run(TestSetup.java:25)
> 	at org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
> ---------------
> Stack traces for all live threads:
> Thread name=derby.antiGC id=280 priority=1 state=WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	java.lang.Object.wait(Object.java:485)
> 	org.apache.derby.impl.services.monitor.AntiGC.run(BaseMonitor.java:2217)
> 	java.lang.Thread.run(Thread.java:619)
> Thread name=Signal Dispatcher id=4 priority=9 state=RUNNABLE isdaemon=true
> Thread name=main id=1 priority=5 state=RUNNABLE isdaemon=false
> 	java.lang.Thread.dumpThreads(Native Method)
> 	java.lang.Thread.getAllStackTraces(Thread.java:1477)
> 	org.apache.derby.shared.common.sanity.ThreadDump.getStackDumpString(ThreadDump.java:34)
> 	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	org.apache.derby.shared.common.sanity.AssertFailure$1.run(AssertFailure.java:165)
> 	java.security.AccessController.doPrivileged(Native Method)
> 	org.apache.derby.shared.common.sanity.AssertFailure.dumpThreads(AssertFailure.java:159)
> 	org.apache.derby.shared.common.sanity.AssertFailure.<init>(AssertFailure.java:82)
> 	org.apache.derby.shared.common.sanity.SanityManager.ASSERT(SanityManager.java:98)
> 	org.apache.derby.impl.store.raw.data.BasePage.unlatch(BasePage.java:1319)
> 	org.apache.derby.impl.store.raw.data.OverflowInputStream.fillByteHolder(OverflowInputStream.java:152)
> 	org.apache.derby.impl.store.raw.data.BufferedByteHolderInputStream.read(BufferedByteHolderInputStream.java:44)
> 	java.io.DataInputStream.read(DataInputStream.java:132)
> 	org.apache.derby.impl.jdbc.PositionedStoreStream.read(PositionedStoreStream.java:106)
> 	org.apache.derby.impl.jdbc.AutoPositioningStream.read(AutoPositioningStream.java:113)
> 	org.apache.derby.impl.jdbc.UpdatableBlobStream.read(UpdatableBlobStream.java:194)
> 	org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.readBytesFromStream(LobStreamsTest.java:463)
> 	org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.compareLob2File(LobStreamsTest.java:488)
> 	org.apache.derbyTesting.functionTests.tests.jdbcapi.LobStreamsTest.testBlobWrite3Param(LobStreamsTest.java:130)
> 	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	org.apache.derbyTesting.junit.BaseTestCase.runBare(BaseTestCase.java:104)
> 	junit.extensions.TestDecorator.basicRun(TestDecorator.java:24)
> 	junit.extensions.TestSetup$1.protect(TestSetup.java:21)
> 	junit.extensions.TestSetup.run(TestSetup.java:25)
> 	org.apache.derbyTesting.junit.BaseTestSetup.run(BaseTestSetup.java:57)
> Thread name=derby.rawStoreDaemon id=941 priority=5 state=TIMED_WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	org.apache.derby.impl.services.daemon.BasicDaemon.rest(BasicDaemon.java:571)
> 	org.apache.derby.impl.services.daemon.BasicDaemon.run(BasicDaemon.java:388)
> 	java.lang.Thread.run(Thread.java:619)
> Thread name=Timer-3 id=281 priority=5 state=WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	java.lang.Object.wait(Object.java:485)
> 	java.util.TimerThread.mainLoop(Timer.java:483)
> 	java.util.TimerThread.run(Timer.java:462)
> Thread name=Finalizer id=3 priority=8 state=WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
> 	java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
> 	java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
> Thread name=Reference Handler id=2 priority=10 state=WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	java.lang.Object.wait(Object.java:485)
> 	java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
> Thread name=derby.rawStoreDaemon id=933 priority=5 state=TIMED_WAITING isdaemon=true
> 	java.lang.Object.wait(Native Method)
> 	org.apache.derby.impl.services.daemon.BasicDaemon.rest(BasicDaemon.java:571)
> 	org.apache.derby.impl.services.daemon.BasicDaemon.run(BasicDaemon.java:388)
> 	java.lang.Thread.run(Thread.java:619)
> ---------------

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