Examples of org.voltcore.TransactionIdManager

org.voltcore.TransactionIdManager

The TransactionIdManager creates Transaction ids that get assigned to VoltDB timestamps. A transaction id contains three fields, the time of creation, a counter to ensure local ordering, and the siteid of the generating site.

This class also contains methods to examine the embedded values of transaction ids.

If the clocks of two different machines are reasonably in sync, txn ids created at the same time on different machines will be reasonably close in value. Thus transaction ids can be used for a global ordering.

        m_mailbox = mailbox;
        m_hsId = myAgreementHSId;
        m_hsIds.addAll(agreementHSIds);
        m_failedHostsCallback = failedHostsCallback;


        m_idManager = new TransactionIdManager( initiatorId, 0, backwardsTimeForgiveness );
        // note, the agreement site always uses the safety dance, even
        // if it could skip it if there was one node
        m_txnQueue =
            new RestrictedPriorityQueue(
                    myAgreementHSId, mailbox, true);

Related Classes of org.voltcore.TransactionIdManager

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.