Karen Smoler Miller created GEODE-2994:
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Summary: 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
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.
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