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Fail weight update when decommission ongoing and fail decommission when attribute not weighed away #4839

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merged 8 commits into from
Oct 20, 2022

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imRishN
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@imRishN imRishN commented Oct 19, 2022

Description

  1. Fail weight update call if decommission action is in process
  2. Fail Decommission call if the attribute is not weighed away

Issues Resolved

#4838

Check List

  • New functionality includes testing.
    • All tests pass
  • New functionality has been documented.
    • New functionality has javadoc added
  • Commits are signed per the DCO using --signoff
  • Commit changes are listed out in CHANGELOG.md file (See: Changelog)

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
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@imRishN imRishN requested review from a team and reta as code owners October 19, 2022 15:23
@imRishN imRishN changed the title Wrr validation Fail weight update when decommission ongoing and fail decommission when attribute not weighed away Oct 19, 2022
Signed-off-by: Rishab Nahata <[email protected]>
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Gradle Check (Jenkins) Run Completed with:

WeightedRouting weightedRouting = weightedRoutingMetadata.getWeightedRouting();
if (weightedRouting.attributeName().equals(decommissionAttribute.attributeName())) {
Double attributeValueWeight = weightedRouting.weights().get(decommissionAttribute.attributeValue());
if (attributeValueWeight == null || attributeValueWeight != 0.0) {
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@Bukhtawar Bukhtawar Oct 19, 2022

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is this value float or double, should we make specific comparisons. For instance Double.valueOf(0.0)

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It is Double. using .equals()

Signed-off-by: Rishab Nahata <[email protected]>
Fix spotless check

Signed-off-by: Rishab Nahata <[email protected]>
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Gradle Check (Jenkins) Run Completed with:

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Gradle Check (Jenkins) Run Completed with:

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Gradle Check (Jenkins) Run Completed with:

Signed-off-by: Rishab Nahata <[email protected]>
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Gradle Check (Jenkins) Run Completed with:

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Codecov Report

Merging #4839 (042fa3a) into main (eb33015) will decrease coverage by 0.02%.
The diff coverage is 66.66%.

@@             Coverage Diff              @@
##               main    #4839      +/-   ##
============================================
- Coverage     70.73%   70.70%   -0.03%     
- Complexity    57884    57894      +10     
============================================
  Files          4689     4689              
  Lines        277296   277314      +18     
  Branches      40363    40367       +4     
============================================
- Hits         196137   196075      -62     
- Misses        64873    64968      +95     
+ Partials      16286    16271      -15     
Impacted Files Coverage Δ
...arch/cluster/decommission/DecommissionService.java 32.03% <50.00%> (+2.35%) ⬆️
...search/cluster/routing/WeightedRoutingService.java 87.93% <100.00%> (+7.16%) ⬆️
...n/admin/cluster/node/tasks/get/GetTaskRequest.java 30.30% <0.00%> (-63.64%) ⬇️
.../action/admin/indices/flush/ShardFlushRequest.java 50.00% <0.00%> (-50.00%) ⬇️
...pensearch/action/ingest/DeletePipelineRequest.java 31.25% <0.00%> (-37.50%) ⬇️
.../admin/cluster/node/tasks/get/GetTaskResponse.java 28.57% <0.00%> (-35.72%) ⬇️
...earch/action/admin/indices/flush/FlushRequest.java 52.17% <0.00%> (-34.79%) ⬇️
...ensearch/client/indices/DetailAnalyzeResponse.java 20.54% <0.00%> (-34.25%) ⬇️
...search/search/aggregations/pipeline/EwmaModel.java 24.44% <0.00%> (-26.67%) ⬇️
.../aggregations/support/values/ScriptLongValues.java 46.51% <0.00%> (-23.26%) ⬇️
... and 477 more

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public void ensureNoOngoingDecommissionAction(ClusterState state) {
DecommissionAttributeMetadata decommissionAttributeMetadata = state.metadata().decommissionAttributeMetadata();
if (decommissionAttributeMetadata != null && decommissionAttributeMetadata.status().equals(DecommissionStatus.FAILED) == false) {
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What if status is SUCCESSFUL?

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Only when Decommission has failed, we can allow the weight update can go through. Not for any other status

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Isn't SUCCESSFUL a final state? The error message of this if condition says: a decommission action is ongoing with status...

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A succesful decommission state means the transport execution has completed. The nodes are decommissioned in this state (not able to start pre voting or join). Hence DecommissionAction ongoing means a zone is decommissioned and the cluster rejects pings from decommissioned node

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Build is failing, please fix the build.


public void ensureNoOngoingDecommissionAction(ClusterState state) {
DecommissionAttributeMetadata decommissionAttributeMetadata = state.metadata().decommissionAttributeMetadata();
if (decommissionAttributeMetadata != null && decommissionAttributeMetadata.status().equals(DecommissionStatus.FAILED) == false) {
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If decommission status is FAILED can certain nodes be out of service or decommissioned while others not as in partially failed?

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No, if the decommission is FAILED, joins or prevoting is not blocked on those nodes and hence if some nodes are out of service (which can happen), the weights request can go through

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But then the zone isn't fully equipped to take traffic right like 90% nodes are out of service and we place weights 10:1:1 when 10 is for the zone only operating at 10% capacity?

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No

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Left a comment, LGTM otherwise

Signed-off-by: Rishab Nahata <[email protected]>
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@Bukhtawar Bukhtawar merged commit 3344738 into opensearch-project:main Oct 20, 2022
imRishN added a commit to imRishN/OpenSearch that referenced this pull request Nov 3, 2022
…en attribute not weighed away (opensearch-project#4839)

* Add checks for decommission before setting weights

Signed-off-by: Rishab Nahata <[email protected]>
Bukhtawar pushed a commit that referenced this pull request Nov 3, 2022
* Fail weight update when decommission ongoing and fail decommission when attribute not weighed away (#4839)

* Add changes for graceful node decommission (#4586)

* Add delay timeout for decommission request (#4931)

* Integ Tests for Awareness Attribute Decommissioning (#4715)

Signed-off-by: Rishab Nahata <[email protected]>
Signed-off-by: pranikum <[email protected]>
imRishN added a commit to imRishN/OpenSearch that referenced this pull request Nov 3, 2022
* Fail weight update when decommission ongoing and fail decommission when attribute not weighed away (opensearch-project#4839)

* Add changes for graceful node decommission (opensearch-project#4586)

* Add delay timeout for decommission request (opensearch-project#4931)

* Integ Tests for Awareness Attribute Decommissioning (opensearch-project#4715)

Signed-off-by: Rishab Nahata <[email protected]>
Signed-off-by: pranikum <[email protected]>
ashking94 pushed a commit to ashking94/OpenSearch that referenced this pull request Nov 7, 2022
…en attribute not weighed away (opensearch-project#4839)

* Add checks for decommission before setting weights

Signed-off-by: Rishab Nahata <[email protected]>
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4 participants