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Ivan Pavlukhin edited comment on IGNITE-5935 at 10/1/18 8:24 AM: ----------------------------------------------------------------- We should support recovery in slightly different scenarios depending on following: * Is failed node server? * Is failed node mvcc coordinator? Also attention should be put on backup transaction rollback. Q: Who should be an initiator of rollback procedure on backup? A: Primary (DhtLocal) TX rolls back dependent backup TXs (DhtRemote). was (Author: pavlukhin): We should support recovery in slightly different scenarios depending on following: * Is failed node server? * Is failed node mvcc coordinator? Also attention should be put on backup transaction rollback. It is not currently clear who should be an initiator of rollback procedure on backup. > MVCC TX: Tx recovery protocol > ----------------------------- > > Key: IGNITE-5935 > URL: https://issues.apache.org/jira/browse/IGNITE-5935 > Project: Ignite > Issue Type: Task > Components: cache, mvcc > Reporter: Semen Boikov > Assignee: Ivan Pavlukhin > Priority: Major > Fix For: 2.7 > > > Transaction recovery procedure is initiated when near node failed before > transaction was finished. > In MVCC transactions _partition update counter_ modification is started on > prepare phase. If a transaction was prepared at least on one node we need to > finish _partition update counter_ modification consistently on all > participating nodes. > Also recovered transaction should be removed from active transactions list on > mvcc coordinator. -- This message was sent by Atlassian JIRA (v7.6.3#76005)