Replication can lose checkpoints
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Key: COUCHDB-704
URL: https://issues.apache.org/jira/browse/COUCHDB-704
Project: CouchDB
Issue Type: Bug
Components: Replication
Affects Versions: 0.12
Reporter: Randall Leeds
Priority: Minor
When saving replication checkpoints in the _local/<repid> document the new
entry is always pushed onto the _original_ "history" list property that existed
at the start of the replication. When any number of things causes the
checkpoint to be written to only one of the databases the head of the history
list gets out of sync. Subsequent attempts to start this replication must start
from the latest common replication log entry in the _original_ history, as
though this replication never occurred.
A better idea is to push every checkpoint onto the history instead of replacing
the head on each save.
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