Fix NPE in rolling over unknown target and return 404 #125352

nielsbauman · 2025-03-20T21:22:12Z

Since #122905 we were throwing NPEs (i.e. 5xxs) when a rollover request has an unknown/non-existent target. Before that, we returned a 400 - illegal argument exception. We now return a 404 which matches "missing target" better. Additionally, to avoid this from happening again, we add a YAML test that asserts the correct exception behavior.

Since elastic#122905 we were throwing NPEs (i.e. 5xxs) when a rollover request has an unknown/non-existent target. This PR restores that to it's original behavior (which is to return a 400 - illegal argument exception). Additionally, to avoid this from happening again, we add a YAML test that asserts the correct exception behavior.

elasticsearchmachine · 2025-03-20T21:22:35Z

Pinging @elastic/es-data-management (Team:Data Management)

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.rollover/10_basic.yml

dakrone

This LGTM, but I think instead of a >non-issue, we should mark it as >bug and add in the changelog that this fixes an NPE and makes the response a 404.

nielsbauman · 2025-03-21T21:38:23Z

@dakrone I thought about that but figured this wasn't relevant enough for a changelog item. I guess it makes sense to have one (and doesn't hurt). Will update, thanks 👍

masseyke · 2025-03-21T21:47:58Z

Here's the stack trace in case anyone comes across this problem:

java.lang.NullPointerException: Cannot invoke \"org.elasticsearch.cluster.metadata.IndexAbstraction.getType()\" because \"indexAbstraction\" is null
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.admin.indices.rollover.TransportRolloverAction.checkBlock(TransportRolloverAction.java:167)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.admin.indices.rollover.TransportRolloverAction.checkBlock(TransportRolloverAction.java:76)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.master.TransportMasterNodeAction.checkBlockIfStateRecovered(TransportMasterNodeAction.java:123)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.master.TransportMasterNodeAction$AsyncSingleAction.doStart(TransportMasterNodeAction.java:193)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:165)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.master.TransportMasterNodeAction.doExecute(TransportMasterNodeAction.java:57)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.TransportAction$RequestFilterChain.proceed(TransportAction.java:135)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.TransportAction.handleExecution(TransportAction.java:96)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.action.support.TransportAction.execute(TransportAction.java:59)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.tasks.TaskManager.registerAndExecute(TaskManager.java:197)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.client.internal.node.NodeClient.executeLocally(NodeClient.java:106)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.rest.action.RestCancellableNodeClient.doExecute(RestCancellableNodeClient.java:82)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.client.internal.support.AbstractClient.execute(AbstractClient.java:140)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.client.internal.IndicesAdminClient.execute(IndicesAdminClient.java:312)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.client.internal.IndicesAdminClient.rolloverIndex(IndicesAdminClient.java:469)
	at org.elasticsearch.server@9.1.0-SNAPSHOT/org.elasticsearch.rest.action.admin.indices.RestRolloverIndexAction.lambda$prepareRequest$1(RestRolloverIndexAction.java:65)

masseyke · 2025-03-21T21:52:06Z

Nice catch @nielsbauman! Do we need to run by this one by the BCC @dakrone?

dakrone · 2025-03-21T21:57:44Z

I think this fits under the >bug category, so I think we're okay without it.

elasticsearchmachine · 2025-03-22T09:56:19Z

Hi @nielsbauman, I've created a changelog YAML for you.

elasticsearchmachine · 2025-03-22T11:00:38Z

💔 Backport failed

Status	Branch	Result
❌	8.18	Commit could not be cherrypicked due to conflicts
❌	8.x	Commit could not be cherrypicked due to conflicts
❌	9.0	Commit could not be cherrypicked due to conflicts

You can use sqren/backport to manually backport by running backport --upstream elastic/elasticsearch --pr 125352

nielsbauman · 2025-03-22T13:07:49Z

💚 All backports created successfully

Status	Branch	Result
✅	8.x
✅	9.0
✅	8.18

Questions ?

Please refer to the Backport tool documentation

Since elastic#122905 we were throwing NPEs (i.e. 5xxs) when a rollover request has an unknown/non-existent target. Before that, we returned a 400 - illegal argument exception. We now return a 404 which matches "missing target" better. Additionally, to avoid this from happening again, we add a YAML test that asserts the correct exception behavior. (cherry picked from commit fdd4537) # Conflicts: # server/src/main/java/org/elasticsearch/action/admin/indices/rollover/MetadataRolloverService.java

) Since #122905 we were throwing NPEs (i.e. 5xxs) when a rollover request has an unknown/non-existent target. Before that, we returned a 400 - illegal argument exception. We now return a 404 which matches "missing target" better. Additionally, to avoid this from happening again, we add a YAML test that asserts the correct exception behavior. (cherry picked from commit fdd4537) # Conflicts: # server/src/main/java/org/elasticsearch/action/admin/indices/rollover/MetadataRolloverService.java

Since elastic#122905 we were throwing NPEs (i.e. 5xxs) when a rollover request has an unknown/non-existent target. Before that, we returned a 400 - illegal argument exception. We now return a 404 which matches "missing target" better. Additionally, to avoid this from happening again, we add a YAML test that asserts the correct exception behavior.

nielsbauman added >non-issue :Data Management/Indices APIs APIs to create and manage indices and templates Team:Data Management Meta label for data/management team auto-backport Automatically create backport pull requests when merged v8.18.1 v8.19.0 v9.0.1 v9.1.0 labels Mar 20, 2025

nielsbauman requested a review from masseyke March 20, 2025 21:22

nielsbauman commented Mar 20, 2025

View reviewed changes

rest-api-spec/src/yamlRestTest/resources/rest-api-spec/test/indices.rollover/10_basic.yml Outdated Show resolved Hide resolved

nielsbauman and others added 5 commits March 21, 2025 08:41

Merge branch 'main' into fix-rollover-not-found

1bf5dde

Return 404 instead of 400

9135578

Remove unused parameter

24ddc07

[CI] Auto commit changes from spotless

bf35059

Add test capability

99e9ada

nielsbauman requested a review from dakrone March 21, 2025 08:00

nielsbauman and others added 2 commits March 21, 2025 09:33

Fix test

767b894

Merge branch 'main' into fix-rollover-not-found

72f92f5

dakrone approved these changes Mar 21, 2025

View reviewed changes

masseyke approved these changes Mar 21, 2025

View reviewed changes

nielsbauman changed the title ~~Fix NPE in rolling over unknown target~~ Fix NPE in rolling over unknown target and return 404 Mar 22, 2025

nielsbauman added >bug and removed >non-issue labels Mar 22, 2025

Update docs/changelog/125352.yaml

08d520f

Merge branch 'main' into fix-rollover-not-found

bb8ace1

nielsbauman enabled auto-merge (squash) March 22, 2025 09:57

nielsbauman disabled auto-merge March 22, 2025 09:57

nielsbauman enabled auto-merge (squash) March 22, 2025 09:57

nielsbauman merged commit fdd4537 into elastic:main Mar 22, 2025
16 of 17 checks passed

nielsbauman deleted the fix-rollover-not-found branch March 22, 2025 10:59

elasticsearchmachine added the backport pending label Mar 22, 2025

This was referenced Mar 22, 2025

[8.x] Fix NPE in rolling over unknown target and return 404 (#125352) #125453

Merged

[9.0] Fix NPE in rolling over unknown target and return 404 (#125352) #125454

Merged

[8.18] Fix NPE in rolling over unknown target and return 404 (#125352) #125455

Merged

nielsbauman removed the backport pending label Apr 23, 2025

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Fix NPE in rolling over unknown target and return 404 #125352

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