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traverser: Check for placement vector out of range #1516

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fyrchik merged 1 commit from acid-ant/frostfs-node:bugfix/traverser-out-range into master 2024-11-21 11:27:53 +00:00
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acid-ant commented 2024-11-21 10:18:35 +00:00
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Placement vector may contain fewer nodes count than it required by policy
due to the outage of the one of the node.

Signed-off-by: Anton Nikiforov an.nikiforov@yadro.com

Placement vector may contain fewer nodes count than it required by policy due to the outage of the one of the node. Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
acid-ant added 1 commit 2024-11-21 10:18:36 +00:00
[#xx] traverser: Check for placement vector out of range
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afacc86f35 
Placement vector may contain fewer nodes count than it required by policy
due to the outage of the one of the node.

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>
acid-ant requested review from storage-core-committers 2024-11-21 10:18:47 +00:00
acid-ant requested review from storage-core-developers 2024-11-21 10:18:50 +00:00
acid-ant force-pushed bugfix/traverser-out-range from afacc86f35 to 9e11e3dc85 2024-11-21 10:19:22 +00:00 Compare
acid-ant force-pushed bugfix/traverser-out-range from 9e11e3dc85 to 6132971266 2024-11-21 10:19:52 +00:00 Compare
dstepanov-yadro reviewed 2024-11-21 10:35:08 +00:00
pkg/services/object_manager/placement/traverser.go Outdated
@ -117,2 +116,2 @@
unsortedVector = append(unsortedVector, ns[i][:rem[i]]...)
regularVector = append(regularVector, ns[i][rem[i]:]...)
if len(ns[i]) < rem[i] {
unsortedVector = append(unsortedVector, ns[i]...)
dstepanov-yadro commented 2024-11-21 10:35:08 +00:00
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Looks like you have forgotten regularVector = append(regularVector, ns[i][rem[i]:]...) here

Looks like you have forgotten `regularVector = append(regularVector, ns[i][rem[i]:]...)` here
fyrchik commented 2024-11-21 10:37:11 +00:00
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But the like you wrote will panic!

But the like you wrote will panic!
dstepanov-yadro commented 2024-11-21 11:07:39 +00:00
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I meant that the second slice is not updated.

I meant that the second slice is not updated.
acid-ant commented 2024-11-21 11:12:48 +00:00
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It should not because we do not have enough nodes for that in the current vector.

It should not because we do not have enough nodes for that in the current vector.
fyrchik reviewed 2024-11-21 10:37:22 +00:00
pkg/services/object_manager/placement/traverser.go Outdated
@ -113,3 +113,2 @@
rem = defaultCopiesVector(cfg.policy)
var unsortedVector []netmap.NodeInfo
var regularVector []netmap.NodeInfo
var unsortedVector, regularVector []netmap.NodeInfo
fyrchik commented 2024-11-21 10:35:39 +00:00
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Unrelated non-functional change, please, remove.

Unrelated non-functional change, please, remove.
fyrchik commented 2024-11-21 10:37:32 +00:00
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Other than this LGTM

Other than this LGTM
acid-ant commented 2024-11-21 10:46:26 +00:00
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Reverted.

Reverted.
acid-ant force-pushed bugfix/traverser-out-range from 6132971266 to bc1b4957e4 2024-11-21 10:46:13 +00:00 Compare
fyrchik reviewed 2024-11-21 10:57:13 +00:00
pkg/services/object_manager/placement/traverser.go Outdated
@ -116,3 +116,2 @@
for i := range rem {
unsortedVector = append(unsortedVector, ns[i][:rem[i]]...)
regularVector = append(regularVector, ns[i][rem[i]:]...)
if len(ns[i]) < rem[i] {
fyrchik commented 2024-11-21 10:57:13 +00:00
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Linter complains about the size of this function.
How about

pivot := min(len(ns[i]), rem[i])
unsortedVector = append(unsortedVector, ns[i][:pivot]...)
regularVector = append(regularVector, ns[i][pivot:]...)
Linter complains about the size of this function. How about ``` pivot := min(len(ns[i]), rem[i]) unsortedVector = append(unsortedVector, ns[i][:pivot]...) regularVector = append(regularVector, ns[i][pivot:]...) ```
👍 2
fyrchik commented 2024-11-21 11:00:38 +00:00
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It is also somewhat more readable and concise IMO

It is also somewhat more readable and concise IMO
acid-ant commented 2024-11-21 11:26:19 +00:00
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Nice! Updated.

Nice! Updated.
acid-ant force-pushed bugfix/traverser-out-range from bc1b4957e4 to 4d9d049e5a 2024-11-21 11:17:29 +00:00 Compare
acid-ant force-pushed bugfix/traverser-out-range from 4d9d049e5a to f12f04199e 2024-11-21 11:19:18 +00:00 Compare
fyrchik approved these changes 2024-11-21 11:21:34 +00:00
fyrchik merged commit f12f04199e into master 2024-11-21 11:27:53 +00:00
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Reference: TrueCloudLab/frostfs-node#1516
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