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raft: not compact log if the compact index < first index of the log

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It should ignore the compact operation instead of panic because the case that
the log is restored from snapshot before executing compact is reasonable.
This commit is contained in:
Yicheng Qin 2014-11-25 11:28:25 -08:00
parent 1a5333e51d
commit 4b43824be9
1 changed files with 4 additions and 0 deletions
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4
raft/raft.go
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@ -534,6 +534,10 @@ func (r *raft) compact(index uint64, nodes []uint64, d []byte) {
if index > r.raftLog.applied {
panic(fmt.Sprintf("raft: compact index (%d) exceeds applied index (%d)", index, r.raftLog.applied))
}
if index < r.raftLog.offset {
//TODO: return an error?
return
}
r.raftLog.snap(d, index, r.raftLog.term(index), nodes)
r.raftLog.compact(index)
}