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From Claus Köll (JIRA) <j...@apache.org>
Subject [jira] [Commented] (JCR-3682) If we get a unexpected exception from the jdbc driver it's possible create a unreleased VersioningLock
Date Mon, 21 Oct 2013 06:14:42 GMT

    [ https://issues.apache.org/jira/browse/JCR-3682?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13800394#comment-13800394
] 

Claus Köll commented on JCR-3682:
---------------------------------

You are right but I think it's not so easy because the rollback (not the unlock) will be done
in TransactionContext.
The rollback will be done if a TransactionException will be thrown and this will only be thrown
if one layer below a ItemStateException occurs.
I did not want to change much code on much layers ...

> If we get a unexpected exception from the jdbc driver it's possible create a unreleased
VersioningLock
> ------------------------------------------------------------------------------------------------------
>
>                 Key: JCR-3682
>                 URL: https://issues.apache.org/jira/browse/JCR-3682
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core, transactions
>    Affects Versions: 2.6.4, 2.7.1
>            Reporter: Claus Köll
>            Assignee: Claus Köll
>             Fix For: 2.6.5, 2.7.2
>
>         Attachments: JCR-3682.patch
>
>
> If we get a unexpected exception from the jdbc driver the VersioningLock from the versionMgr.getXAResourceEnd()
XAResource will never be released so the repository is locked forever. We should catch every
Exception in BundleDbPersistenceManager.readBundle() to prevent that situation.
> Following Stacktrace shows the problem ...
> Caused by: java.lang.ArrayIndexOutOfBoundsException
> 	at oracle.jdbc.driver.T4CSocketInputStreamWrapper.readLongMSB(T4CSocketInputStreamWrapper.java:201)
> 	at oracle.jdbc.driver.T4CMAREngine.buffer2Value(T4CMAREngine.java:2374)
> 	at oracle.jdbc.driver.T4CMAREngine.unmarshalUB4(T4CMAREngine.java:1310)
> 	at oracle.jdbc.driver.T4CTTIoer.unmarshal(T4CTTIoer.java:257)
> 	at oracle.jdbc.driver.T4CTTIfun.receive(T4CTTIfun.java:447)
> 	at oracle.jdbc.driver.T4CTTIfun.doRPC(T4CTTIfun.java:192)
> 	at oracle.jdbc.driver.T4C8TTILob.read(T4C8TTILob.java:146)
> 	at oracle.jdbc.driver.T4CConnection.getBytes(T4CConnection.java:2392)
> 	at oracle.sql.BLOB.getBytes(BLOB.java:348)
> 	at oracle.jdbc.driver.OracleBlobInputStream.needBytes(OracleBlobInputStream.java:181)
> 	at oracle.jdbc.driver.OracleBufferedStream.readInternal(OracleBufferedStream.java:174)
> 	at oracle.jdbc.driver.OracleBufferedStream.read(OracleBufferedStream.java:143)
> 	at org.apache.commons.io.input.ProxyInputStream.read(ProxyInputStream.java:75)
> 	at org.apache.commons.io.input.CountingInputStream.read(CountingInputStream.java:74)
> 	at java.io.DataInputStream.readFully(DataInputStream.java:189)
> 	at java.io.DataInputStream.readFully(DataInputStream.java:163)
> 	at org.apache.jackrabbit.core.persistence.util.BundleReader.readBytes(BundleReader.java:669)
> 	at org.apache.jackrabbit.core.persistence.util.BundleReader.readName(BundleReader.java:520)
> 	at org.apache.jackrabbit.core.persistence.util.BundleReader.readQName(BundleReader.java:469)
> 	at org.apache.jackrabbit.core.persistence.util.BundleReader.readBundleNew(BundleReader.java:194)
> 	at org.apache.jackrabbit.core.persistence.util.BundleReader.readBundle(BundleReader.java:145)
> 	at org.apache.jackrabbit.core.persistence.util.BundleBinding.readBundle(BundleBinding.java:152)
> 	at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.readBundle(BundleDbPersistenceManager.java:927)
> 	at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.loadBundle(BundleDbPersistenceManager.java:889)
> 	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.getBundleCacheMiss(AbstractBundlePersistenceManager.java:766)
> 	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.getBundle(AbstractBundlePersistenceManager.java:749)
> 	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.storeInternal(AbstractBundlePersistenceManager.java:633)
> 	at org.apache.jackrabbit.core.persistence.bundle.AbstractBundlePersistenceManager.store(AbstractBundlePersistenceManager.java:590)
> 	at org.apache.jackrabbit.core.persistence.pool.BundleDbPersistenceManager.store(BundleDbPersistenceManager.java:482)
> 	at org.apache.jackrabbit.core.state.SharedItemStateManager$Update.end(SharedItemStateManager.java:788)
> 	at org.apache.jackrabbit.core.state.XAItemStateManager.commit(XAItemStateManager.java:181)
> 	at org.apache.jackrabbit.core.TransactionContext.commit(TransactionContext.java:195)
> 	at org.apache.jackrabbit.core.XASessionImpl.commit(XASessionImpl.java:326)
> 	at org.apache.jackrabbit.jca.TransactionBoundXAResource.commit(TransactionBoundXAResource.java:49)
> 	at com.ibm.ejs.j2c.XATransactionWrapper.commit(XATransactionWrapper.java:490)



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