September 2017 - jbossts-issues - Jboss List Archives

[JBoss JIRA] (JBTM-2926) "number-of-heuristics" statistic is inaccurate

by Michael Musgrove (JIRA)

Michael Musgrove created JBTM-2926: -------------------------------------- Summary: "number-of-heuristics" statistic is inaccurate Key: JBTM-2926 URL: https://issues.jboss.org/browse/JBTM-2926 Project: JBoss Transaction Manager Issue Type: Bug Components: JTA Affects Versions: 5.6.4.Final Reporter: Michael Musgrove Assignee: Michael Musgrove Fix For: 5.next When a JTA transaction is ended (commit or rollback) the heuristic count is always incremented regardless of whether or not there was a heuristic and therefore does not accurately reflect the number of participants that actually reported heuristic outcomes. -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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[JBoss JIRA] (JBTM-1488) Implement the REST-JDI specification

by Michael Musgrove (JIRA)

[ https://issues.jboss.org/browse/JBTM-1488?page=com.atlassian.jira.plugin.... ] Issue was automatically transitioned when Michael Musgrove created pull request #1209 in GitHub ----------------------------------------------------------------------------------------------- Status: Pull Request Sent (was: Coding In Progress) > Implement the REST-JDI specification > ------------------------------------ > > Key: JBTM-1488 > URL: https://issues.jboss.org/browse/JBTM-1488 > Project: JBoss Transaction Manager > Issue Type: Feature Request > Components: REST > Reporter: Michael Musgrove > Assignee: Michael Musgrove > Priority: Optional > Fix For: 6.later > > > https://community.jboss.org/wiki/CompensatingRESTfulTransactions/ -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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[JBoss JIRA] (JBTM-2925) TM jdbc driver list should be enriched with driver name for DB2 driver

by Ondra Chaloupka (JIRA)

[ https://issues.jboss.org/browse/JBTM-2925?page=com.atlassian.jira.plugin.... ] Issue was automatically transitioned when Ondra Chaloupka created pull request #1208 in GitHub ---------------------------------------------------------------------------------------------- Status: Pull Request Sent (was: Open) > TM jdbc driver list should be enriched with driver name for DB2 driver > ---------------------------------------------------------------------- > > Key: JBTM-2925 > URL: https://issues.jboss.org/browse/JBTM-2925 > Project: JBoss Transaction Manager > Issue Type: Bug > Components: Transactional Driver > Affects Versions: 5.6.4.Final > Reporter: Ondra Chaloupka > Assignee: Ondra Chaloupka > Priority: Minor > > The list of the "supported" jdbc driver names should be enhanced with DB2 driver name which is {{IBM Data Server Driver for JDBC and SQLJ}}. > In case the need to verify the connection metadata you can try to check small tool here > https://github.com/ochaloup/jdbc-driver-load -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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[JBoss JIRA] (JBTM-2925) TM jdbc driver list should be enriched with driver name for DB2 driver

by Ondra Chaloupka (JIRA)

Ondra Chaloupka created JBTM-2925: ------------------------------------- Summary: TM jdbc driver list should be enriched with driver name for DB2 driver Key: JBTM-2925 URL: https://issues.jboss.org/browse/JBTM-2925 Project: JBoss Transaction Manager Issue Type: Bug Components: Transactional Driver Affects Versions: 5.6.4.Final Reporter: Ondra Chaloupka Assignee: Ondra Chaloupka Priority: Minor The list of the "supported" jdbc driver names should be enhanced with DB2 driver name which is {{IBM Data Server Driver for JDBC and SQLJ}}. In case the need to verify the connection metadata you can try to check small tool here https://github.com/ochaloup/jdbc-driver-load -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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[JBoss JIRA] (JBTM-2924) Add some more trace statement to make it clear which connection modifier is in use for the TransactionalDriver

by Tom Jenkinson (JIRA)

Tom Jenkinson created JBTM-2924: ----------------------------------- Summary: Add some more trace statement to make it clear which connection modifier is in use for the TransactionalDriver Key: JBTM-2924 URL: https://issues.jboss.org/browse/JBTM-2924 Project: JBoss Transaction Manager Issue Type: Component Upgrade Components: Transactional Driver Reporter: Tom Jenkinson Assignee: Tom Jenkinson Priority: Minor It is not clear which one is used and whether the override is in effect -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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[JBoss JIRA] (JBTM-2920) Investigate the use of transactions within a reactive microservices environment

by Martin Stefanko (JIRA)

[ https://issues.jboss.org/browse/JBTM-2920?page=com.atlassian.jira.plugin.... ] Martin Stefanko reassigned JBTM-2920: ------------------------------------- Assignee: Martin Stefanko > Investigate the use of transactions within a reactive microservices environment > ------------------------------------------------------------------------------- > > Key: JBTM-2920 > URL: https://issues.jboss.org/browse/JBTM-2920 > Project: JBoss Transaction Manager > Issue Type: Task > Environment: * > Reporter: Ondra Chaloupka > Assignee: Martin Stefanko > Labels: student > > Investigate the use of a transaction manager when used within a reactive microservices environment[1][2]. > h2. Motivation > Reactive microservice architecture is a trending architectural pattern. The reactive architecture could simply be defined as a system where messages are sent to a jms queue or a specialized event storage and other services are registered to, for being notified when an event is generated to be able to react on it. Synchronous calls from a service to a service are not meant to be a good practice in such system. Here all the communication between services is done with message passing through the event storage. > Such a system is expected to decouple data [3] where each microservice manages data, which needs for working, on its own. Still there are cases where some data coordination is needed. As the all communication is asynchronous it may be that we need to modify the transaction manager away from synchronous operations. One possibly good match seems to be the Saga transactions[4] and eventual consistency[5][6] but handling of them is fitting to the message driven system. The way of understanding Saga in microservice world could be overviewed at [15]. > Narayana transaction manager is good in managing Saga transactions where having long history experience from running it for WS[7] or managing consistency in NoSQL databases[8]. But Narayana is designed to manage transactions in synchronous way. The transaction context is normally passed along a RPC call where the transaction is finished after such synchronous call is returned back to the caller. > h2. Steps to go > The point here is to investigate on the topic of usage Saga in reactive architecture, gather working solutions - especially in Java world (some references eg. [9][10][11][12][13][14]), get experience in how they are working and on top of this experience considering implementation of the reactive approach with Narayana. It may be that Narayana requires some modification to execute optimally for such task and then it’s up to reconsideration if some greenfield implementation should be started. As the last step there should be created some sample project (ie. quickstart) where the usage of the implementation would be shown. > With that we expect usage of projects in Red Hat portfolio. The sample project would be probably implemented with usage of the Vert.x, meybe there could be considered usage of Infinispan or AMQ7 for handling events. > h2. Expected output > The expected output of this effort is > * A research document with state of the art. > ** Overview of what are the problem of the synchronous/blocking approach. > ** What are the other approaches that people have to this problem, > * A proof-of-concept implementation > ** Preferably with use of Narayana transaction manager prepare a service capable to manage transactions in world of reactive microservices > * An example/quickstart showing this in practical terms > ** A proof that a transaction manager can be made to work in an asynchronous environment. For example if you have a Vert.x event and it has to commit a transaction. The handler for that message currently does sync ops with transaction manager and that blocks. One of the goals for the project is to prevent blocking of threads in an async environment. > h2. Resources > [1] [https://www.youtube.com/watch?v=STKCRSUsyP0|https://www.youtube.com/watch... 2017, The Many Meanings of Event-Driven Architecture, Martin Fowler) > [2] [http://www.oreilly.com/programming/free/reactive-microservices-architectu...] (Reactive Microservices Architecture) > [3] [http://blog.christianposta.com/microservices/the-hardest-part-about-micro...] (The Hardest Part About Microservices: Your Data) > [4] [https://www.cs.cornell.edu/andru/cs711/2002fa/reading/sagas.pdf] (Sagas paper) > [5] [http://queue.acm.org/detail.cfm?id=2462076] (Eventual Consistency Today: Limitations, Extensions, and Beyond) > [6] [http://queue.acm.org/detail.cfm?id=3025012] (Life Beyond Distributed Transactions) > [7] [http://narayana.io//docs/project/index.html#d0e14874] (Narayana doc, WS-Business Activity) > [8] [http://jbossts.blogspot.cz/2014/05/bringing-transactional-guarantees-to.html] (Bringing Transactional Guarantees to MongoDB) > [9] [https://www.youtube.com/watch?v=0UTOLRTwOX0] (Distributed Sagas: A Protocol for Coordinating Microservices - Caitie McCaffrey - JOTB17) > [10] [https://www.youtube.com/watch?v=YPbGW3Fnmbc] (Using sagas to maintain data consistency in a microservice architecture by Chris Richardson) > [11] [http://www.axonframework.org] > [12] [http://eventuate.io] > [13] [https://docs.particular.net/nservicebus/sagas] (.NET NServiceBus Saga) > [14] [https://www.youtube.com/watch?v=Rm8n-H6zI1k] (Dr. Roland Kuhn: Reactive Design Patterns, Akka) > [15] [http://microservices.io/patterns/data/saga.html] (Pattern: Saga) -- This message was sent by Atlassian JIRA (v7.2.3#72005)

7 years, 3 months

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jbossts-issues September 2017