Details
Major Description
Problem
Under a high load of requests to an NPM Group repository for NPM package metadata, the following types of the problems may be noticed in the nexus.log
2021-04-21 16:51:57,918+0000 INFO [qtp1386560287-95] node *UNKNOWN org.sonatype.nexus.repository.npm.internal.orient.OrientNpmGroupDataFacet - Missing blob example@ECCD5192-0C832296-599116CF-97A001CF-285413DE:f02341cf-70db-4460-9c4d-923e9309d02a containing cached metadata example, deleting asset and triggering rebuild.
These as well:
2021-04-16 13:51:50,438+0000 WARN [qtp1003325215-90363] node *UNKNOWN org.sonatype.nexus.repository.httpbridge.internal.ViewServlet - Failure servicing: GET /repository/example_npm_group/combined-stream com.orientechnologies.orient.core.exception.OConcurrentModificationException: Cannot UPDATE the record #61:7522609 because the version is not the latest. Probably you are updating an old record or it has been modified by another user (db=v2 your=v1) DB name="component" at org.sonatype.nexus.orient.entity.ConflictHook.onUpdate(ConflictHook.java:154) at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.checkAndIncrementVersion(OAbstractPaginatedStorage.java:4545) at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.doUpdateRecord(OAbstractPaginatedStorage.java:4022) at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.commitEntry(OAbstractPaginatedStorage.java:4607) at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.commit(OAbstractPaginatedStorage.java:1857) at com.orientechnologies.orient.core.tx.OTransactionOptimistic.doCommit(OTransactionOptimistic.java:541) at com.orientechnologies.orient.core.tx.OTransactionOptimistic.commit(OTransactionOptimistic.java:99) at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2908) at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.commit(ODatabaseDocumentTx.java:2870) at org.sonatype.nexus.repository.storage.StorageTxImpl.commit(StorageTxImpl.java:195)
The inbound requests that trigger this error may get a 500 response from NXRM and this will potentially fail NPM builds.
Cause
The npm group repo implementation was not using the same cooperation key for operations that manipulate the same package root metadata, Like "Build package root" and "Handle missing blob for package root". These processes must do the same operation - build metadata with the valid blob and therefore must use the same cooperation key.
Attachments
Issue Links
- relates
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NEXUS-29433 fetching identical group npm package metadata concurrently can result in uncooperative threads and increased blobstore and database load
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- Closed
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