Fix artifact upload collision between Debug and Release matrix legs#1564
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Fix artifact upload collision between Debug and Release matrix legs#1564
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Both Debug and Release matrix legs call CIBuild which includes -publish, causing both to simultaneously upload PackageArtifacts (e.g. Microsoft.DotNet.XHarness.CLI.nupkg) to the same AzDO artifact container. This results in intermittent 'Blob is incomplete (missing block)' errors. Fix by passing /p:Publish=false for the Debug leg so only the Release leg publishes packages to artifact storage. The Debug leg still builds, tests, signs, and packs -- it just skips the artifact upload step. Ref: dotnet/dnceng#1916 Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
steveisok
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Mar 14, 2026
This was referenced Mar 14, 2026
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Problem
Both Debug and Release matrix legs in the public CI pipeline call
CIBuild.cmd/cibuild.sh, which includes-publish. This causes both legs to simultaneously uploadPackageArtifacts/Microsoft.DotNet.XHarness.CLI.11.0.0-ci.nupkgto the same AzDO artifact container, resulting in intermittent "Blob is incomplete (missing block)" errors when the blob uploads interleave.This was observed in the most recent CI runs on #1563 and is a well-known pattern across dotnet repos (see dotnet/dnceng#1916).
Root Cause
The arcade SDK's
PushToBuildStorageMSBuild task (invoked byPublish.projwhenPublish=true) emits##vso[artifact.upload containerfolder=PackageArtifacts;artifactname=PackageArtifacts]commands. When both matrix legs run this simultaneously for the same.nupkgfile, AzDO's blob storage encounters write conflicts.Fix
Pass
/p:Publish=falseto the Debug matrix leg so only the Release leg publishes packages to artifact storage. The Debug leg still builds, tests, signs, and packs — it just skips the artifact upload step. MSBuild's "last property wins" rule ensures this overrides the-publishflag passed byCIBuild.cmd.Applied to both Windows and macOS stages.