[BUG] Task `:distribution:bwc:minor:buildBwcLinuxArm64Tar` fails on Linux ARM

[andrross]

Describe the bug

> Task :distribution:bwc:minor:buildBwcLinuxArm64Tar FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':distribution:bwc:minor:buildBwcLinuxArm64Tar'.
> Building 2.19.0 didn't generate expected file /home/ubuntu/OpenSearch/distribution/bwc/minor/build/bwc/checkout-2.x/distribution/archives/linux-arm64-tar/build/distributions/opensearch-min-2.19.0-SNAPSHOT-linux-arm64-x64.tar.gz

Related component

Build

To Reproduce

Execute ./gradlew :distribution:bwc:minor:buildBwcLinuxArm64Tar on a Graviton AWS EC2 instance with Ubuntu installed.

It expects the file opensearch-min-2.19.0-SNAPSHOT-linux-arm64-x64.tar.gz but the actual file that is created is opensearch-min-2.19.0-SNAPSHOT-linux-arm64.tar.gz (there's an extra "-x64" in the expected file).

I believe the problem is here:

OpenSearch/buildSrc/src/main/java/org/opensearch/gradle/internal/InternalDistributionBwcSetupPlugin.java

Line 184 in d158ec6

classifier = "-" + baseName + "-x64";

If I remove that trailing "-x64" then it works, though I'm sure that change would break the build for the non-ARM case.

Expected behavior

task succeeds

Additional Details

m8g.4xlarge EC2 instance running Ubuntu 24.04

[sandeshkr419]

If I remove that trailing "-x64" then it works, though I'm sure that change would break the build for the non-ARM case.

the file name opensearch-min-2.19.0-SNAPSHOT-linux-arm64.tar.gz seems correct as having both the suffixes -arm64-x64 looks buggy. I'm surprised why it hasn't failed before.
I suppose there should be a conditional suffix -x64 or -arm64 based on the architecture type.

@rishabh6788 Thoughts?