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clientv3/leasing: fix racey waitSession

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Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
This commit is contained in:
Gyuho Lee 2017-12-21 15:57:38 -08:00
parent bdc508cadf
commit 3193f3c9ab
1 changed files with 4 additions and 1 deletions
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5
clientv3/leasing/kv.go
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@ -445,8 +445,11 @@ func (lkv *leasingKV) revokeLeaseKvs(ctx context.Context, kvs []*mvccpb.KeyValue
}
func (lkv *leasingKV) waitSession(ctx context.Context) error {
lkv.leases.mu.RLock()
sessionc := lkv.sessionc
lkv.leases.mu.RUnlock()
select {
case <-lkv.sessionc:
case <-sessionc:
return nil
case <-lkv.ctx.Done():
return lkv.ctx.Err()