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Tweaks to dynamic locks (#10508)

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* Fix cases where minimum timeout > default timeout.
* Add defensive code for too small/negative timeouts.
* Never set timeout below the maximum value of a request.
* Protect against (unlikely) int64 wraps.
* Decrease timeout slower.
* Don't re-lock before copying.
This commit is contained in:
Klaus Post
2020-09-18 09:18:18 -07:00
committed by GitHub
parent 6f45e303f5
commit c851e022b7
5 changed files with 85 additions and 38 deletions
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2
cmd/iam.go
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@@ -450,7 +450,7 @@ func (sys *IAMSys) Init(ctx context.Context, objAPI ObjectLayer) {
wquorum := InsufficientWriteQuorum{}
// allocate dynamic timeout once before the loop
iamLockTimeout := newDynamicTimeout(3*time.Second, 5*time.Second)
iamLockTimeout := newDynamicTimeout(5*time.Second, 3*time.Second)
for range retry.NewTimerWithJitter(retryCtx, time.Second, 5*time.Second, retry.MaxJitter) {
// let one of the server acquire the lock, if not let them timeout.