[jira] [Created] (OAK-3439) MissingLastRevSeeker potential race condition acquiring the lock

["Julian Reschke (JIRA)" <ji...@apache.org>]

Julian Reschke created OAK-3439:
-----------------------------------

             Summary: MissingLastRevSeeker potential race condition acquiring the lock
                 Key: OAK-3439
                 URL: https://issues.apache.org/jira/browse/OAK-3439
             Project: Jackrabbit Oak
          Issue Type: Task
          Components: core, rdbmk
            Reporter: Julian Reschke


{code}
            // This approach has a race condition where two different cluster
            // nodes
            // can acquire the lock simultaneously.
            UpdateOp update = new UpdateOp(Integer.toString(clusterId), true);
            update.set(ClusterNodeInfo.REV_RECOVERY_LOCK, RecoverLockState.ACQUIRED.name());
            store.createOrUpdate(Collection.CLUSTER_NODES, update);
            return true;
{code}

It would be good if could harden this, however it seems that the conditions in UpdateOp only work on revision properties. [~mreutegg] WDYT?



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