[jbossts-issues] [JBoss JIRA] (JBTM-3006) Tooling delete operation can left hanging remote txn branch when it was subordinate prepared participant

Ondra Chaloupka (JIRA) issues at jboss.org
Tue Apr 3 05:34:00 EDT 2018


    [ https://issues.jboss.org/browse/JBTM-3006?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13554846#comment-13554846 ] 

Ondra Chaloupka commented on JBTM-3006:
---------------------------------------

Another way could be removing even prepared branches on the mbean delete operation. This approach was introduced in commit:
https://github.com/ochaloup/narayana/commit/9a678044b454bbfc4154430e39c51688cd1649b3

But this approach is not ideal one as the tooling should not be responsible for finishing prepared transactions. That's the work for the recovery.

> Tooling delete operation can left hanging remote txn branch when it was subordinate prepared participant
> --------------------------------------------------------------------------------------------------------
>
>                 Key: JBTM-3006
>                 URL: https://issues.jboss.org/browse/JBTM-3006
>             Project: JBoss Transaction Manager
>          Issue Type: Bug
>          Components: Tooling
>    Affects Versions: 5.8.0.Final
>            Reporter: Ondra Chaloupka
>            Assignee: Ondra Chaloupka
>            Priority: Minor
>         Attachments: data-subordinate.zip, jboss-cli-commands.txt, standalone-full.xml
>
>
> When administrator decides to call 'delete' in WFLY (or as jmx mbean call) and the transaction is subordinate (meaning started by another server and the context was propagated to this one) then if they are in heuristic state the transaction is removed from the narayana object store and from the RA. If the transaction is in prepared state then participant is removed from narayana object store (that could be influenced by settings of {{ignoreMBeanHeuristics}} property, see https://github.com/jbosstm/narayana/blob/master/ArjunaCore/arjuna/classes/com/arjuna/ats/arjuna/common/ObjectStoreEnvironmentBean.java#L804) but the transaction branch at the RA is left untouched - [XAResource.forget|https://docs.oracle.com/javaee/7/api/javax/transaction/xa/XAResource.html#forget-javax.transaction.xa.Xid-] is called but it fails at the participant remote branch (see [XA spec|pubs.opengroup.org/onlinepubs/009680699/toc.pdf) - the XA spec permits calling {{forget}} only on heuristically finished branches but this is still {{prepared}}.
> The final outcome is that there is removed record from Narayana object store and left untouched in-doubt (prepared) remote branch.
> Such record should be handled by recovery (ideally) the {{SubordinateJTAXAResourceOrphanFilter}} votes for rollback but then the {{SubordinationManagerXAResourceOrphanFilter}} forces to leave it as it is. Thus such record will be handing forever.
> {code}
>  TRACE [com.arjuna.ats.arjuna] (Periodic Recovery) OutputObjectState::OutputObjectState()
>  DEBUG [com.arjuna.ats.jta] (Periodic Recovery) No record found for < formatId=131077, gtrid_length=29, bqual_length=37, tx_uid=0:ffff0a280466:-51bd8cd:5aa92b2b:1c, node_name=1, branch_uid=0:ffff0a280466:758014d3:5aa92b2f:26, subordinatenodename=2, eis_name=java:/JmsXA NodeId:2bda713c-2790-11e8-8b4f-0a0027000000 >
>  DEBUG [com.arjuna.ats.jta] (Periodic Recovery) XAResourceOrphanFilter com.arjuna.ats.internal.jta.recovery.arjunacore.SubordinateJTAXAResourceOrphanFilter voted ROLLBACK
>  DEBUG [com.arjuna.ats.jta] (Periodic Recovery) subordinate node name of < formatId=131077, gtrid_length=29, bqual_length=37, tx_uid=0:ffff0a280466:-51bd8cd:5aa92b2b:1c, node_name=1, branch_uid=0:ffff0a280466:758014d3:5aa92b2f:26, subordinatenodename=2, eis_name=java:/JmsXA NodeId:2bda713c-2790-11e8-8b4f-0a0027000000 > is 2
>  TRACE [com.arjuna.ats.jta] (Periodic Recovery) TransactionImple.getStatus: javax.transaction.Status.STATUS_UNKNOWN
>  DEBUG [com.arjuna.ats.jta] (Periodic Recovery) XAResourceOrphanFilter com.arjuna.ats.internal.jta.recovery.arjunacore.SubordinationManagerXAResourceOrphanFilter voted LEAVE_ALONE
>  TRACE [com.arjuna.ats.arjuna] (Periodic Recovery) RecoveryXids isStale Check org.jboss.activemq.artemis.wildfly.integration.WildFlyActiveMQXAResourceWrapper at 3397522a 1521650139598 1521650140600 true
> {code}



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