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ASF GitHub Bot commented on GEODE-2994: --------------------------------------- Github user dihardman commented on the issue: https://github.com/apache/geode/pull/544 +1, looks good. On Wed, May 31, 2017 at 2:46 PM, Barrett Oglesby <notificati...@github.com> wrote: > *@boglesby* approved this pull request. > > — > You are receiving this because you were mentioned. > Reply to this email directly, view it on GitHub > <https://github.com/apache/geode/pull/544#pullrequestreview-41366575>, or mute > the thread > <https://github.com/notifications/unsubscribe-auth/AUMy_V3Nb1BTdG8HBSgSviPw_TOipMyAks5r_d-agaJpZM4Nn-w5> > . > > Doc task: interactions of backups with persistence > -------------------------------------------------- > > Key: GEODE-2994 > URL: https://issues.apache.org/jira/browse/GEODE-2994 > Project: Geode > Issue Type: Improvement > Components: docs > Reporter: Karen Smoler Miller > Assignee: Karen Smoler Miller > > Document that an inconsistent state can occur by using a backup to restore > system state, if the backup is made at the wrong time. > There are 2 examples where persistence and taking a backup might cause an > inconsistency with region data, if that backup is used to restore a system. > # *A Lucene index.* The Lucene index is persistent. If a backup is unlucky > enough to be taken between a persisted write to a region (disk op) and a > persisted write to the Lucene index (disk op), then the backup represents > inconsistent data in the region and Lucene index. > # *An AEQ.* The AEQ is persistent. If a backup is unlucky enough to be taken > between a persisted write to a region (disk op) and a persisted write to the > AEQ (disk op), then the backup represents inconsistent data in the region and > the AEQ. > The solution is to make sure that backups are taken when the system is > quiescent WRT region operations. -- This message was sent by Atlassian JIRA (v6.3.15#6346)