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From Oystein.Grov...@Sun.COM (Øystein Grøvlen)
Subject Re: [PATCH] [jira] Updated: (DERBY-555) Unable to restart after disk is full
Date Mon, 17 Oct 2005 13:16:14 GMT

I am still waiting for (hopefully) final review/commit of this patch.

--
Øystein

>>>>> "ØG" == Øystein Grøvlen <Oystein.Grovlen@Sun.COM> writes:

    ØG> Could someone review/commit the new patch that I added last week?  I
    ØG> have run derbyall with no new errors.

    ØG> --
    ØG> Øystein

    ØG> From: Øystein Grøvlen <derby-dev@db.apache.org> (JIRA)
    ØG> Subject: [jira] Updated: (DERBY-555) Unable to restart after disk is full
    ØG> To: derby-dev@db.apache.org
    ØG> Date: Tue, 04 Oct 2005 13:06:49 +0200 (CEST)
    ØG> Reply-to: Derby Development <derby-dev@db.apache.org>

    ØG>      [ http://issues.apache.org/jira/browse/DERBY-555?page=all ]

    ØG> Øystein Grøvlen updated DERBY-555:
    ØG> ----------------------------------

    ØG>     Attachment: derby-555a.diff

    ØG> Added a new patch that changes the message to derby.log and adds a test for this
bug. 

    ØG> With this patch, when a database is booted in read-only mode, the boot message
in derby.log will contain information about that.

    ØG> I have also added a test, TurnsReadOnly.java, that without the fix, get the NPE.
 This is not in a disk full scenario, but it also occurs with a read-only DB directory.  
Since there is currently no way to turn write access back on from a Java program, the DB directory
will be read-only after the test is run.  Hence, the test framework will not be able to clean
up the test directory.  Therefore, this test is not added to the derbyall test suite.

    ØG> The following files are changed:

    ØG> M      java/engine/org/apache/derby/impl/store/raw/RawStore.java
    ØG>       Do not check log location for read-only databases (avoids NPE)
    ØG> M      java/engine/org/apache/derby/impl/store/raw/data/BaseDataFileFactory.java
    ØG>       Add information to boot message in derby.log when database is booted in
read-only mode.
    ØG> M      java/engine/org/apache/derby/iapi/reference/MessageId.java
    ØG>       Added message id for the read-only part of the boot message
    ØG> M      java/engine/org/apache/derby/loc/messages_en.properties
    ØG>       Added text for the read-only part of the boot message
    ØG> M      java/testing/org/apache/derbyTesting/functionTests/tests/store/copyfiles.ant
    ØG>       Added TurnsReadOnly_app.properties
    ØG> A      java/testing/org/apache/derbyTesting/functionTests/tests/store/TurnsReadOnly.java
    ØG>       New test that boots a database with log in non-default location, shuts it
down, sets DB directory to read-only, boots again and checks that DML is not allowed.
    ØG> A      java/testing/org/apache/derbyTesting/functionTests/tests/store/TurnsReadOnly_app.properties
    ØG>       Test properties
    ØG> A      java/testing/org/apache/derbyTesting/functionTests/master/TurnsReadOnly.out
    ØG>       Master file for new test.

    ØG> I am currently running derbyall and will update report when test is finished.

    >> Unable to restart after disk is full
    >> ------------------------------------
    >> 
    >> Key: DERBY-555
    >> URL: http://issues.apache.org/jira/browse/DERBY-555
    >> Project: Derby
    >> Type: Bug
    >> Components: Store
    >> Versions: 10.2.0.0
    >> Environment: Sun Sparc Solaris, 1.4 JDK, Derby Client/Server
    >> Reporter: Øystein Grøvlen
    >> Assignee: Øystein Grøvlen
    >> Priority: Critical
    >> Attachments: derby-555a.diff
    >> 
    >> 1. Inserted data into the database until the disk was full. (5 clients inserting
into 5 different tables in parallel.)
    >> 2. Shut down the server
    >> 3. Start the database again without freeing any disk space.
    >> When I try to start the database again, I get Null-pointer-exception, regardless
of how I connect (have tried embedded, client server, ij, jdbc applications).  I have not
tried to free some space on the disk before starting.  
    >> The call stack is not available right now (the computer I used had to be shut
down due to problems with our cooling system), but the exception comes from the following
line in RawStore.java:
    >> properties.put(Attribute.LOG_DEVICE, logFactory.getCanonicalLogPath());
    >> getCanonicalLogPath() returns null which results in a NPE in the hash table.
    >> A quick debug before the computer was stopped, showed that the logFactory was
an instance of org.apache.derby.impl.store.raw.log.ReadOnly which always returns null in its
 getCanonicalLogPath().
    >> I suspect this may be related to the fact that I ran with the log in a non-default
location.

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    ØG> ----------



    ØG> -- 
    ØG> Øystein

-- 
Øystein


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