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@ -180,7 +180,9 @@ func (s *store) TestAndSet(nodePath string, prevValue string, prevIndex uint64,
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return nil, etcdErr.NewError(etcdErr.EcodeNotFile, nodePath, index, term)
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}
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if n.Value == prevValue || n.ModifiedIndex == prevIndex {
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// If both of the prevValue and prevIndex are given, we will test both of them.
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// Command will be executed, only if both of the tests are successful.
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if (prevValue == "" || n.Value == prevValue) && (prevIndex == 0 || n.ModifiedIndex == prevIndex) {
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e := newEvent(TestAndSet, nodePath, index, term)
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e.PrevValue = n.Value
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