Kubernetes Submit Queue aef15aa875 Merge pull request #36625 from bruceauyeung/branch-eliminate-recursive-call-attemptToUpdateMasterRoleLabelsAndTaints ...

Automatic merge from submit-queue

[kubeadm] use iteration instead of recursion in function

**What this PR does / why we need it**:

before this PR, function `attemptToUpdateMasterRoleLabelsAndTaints` recursively call itself. there are some defeats in it:
1. potential stack overflow.
2. unnecessary extra  `json.Marshal` calls.
3. unnecessary extra `client.Nodes().List` calls.

this PR rewrite `attemptToUpdateMasterRoleLabelsAndTaints` function, use iterate instead of recursion.
so these 3 defeats the metioned above are gone.
Signed-off-by: bruceauyeung <ouyang.qinhua@zte.com.cn>

2016-12-01 00:39:14 -08:00

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