[BUG] Nightly benchmark for vectorsearch workload (faiss engine) failing with GLIBC version error

[rishabh6788]

What is the bug?
The nightly benchmarks for vectorsearch have been failing for faiss engine indices in OS-2.14.0 with below error:

fatal error in thread [opensearch[ip-172-31-172-58.ec2.internal][generic][T#5]], exiting
java.lang.UnsatisfiedLinkError: /home/ec2-user/opensearch/plugins/opensearch-knn/lib/libopensearchknn_faiss.so: /lib64/libm.so.6: version `GLIBC_2.27' not found (required by /home/ec2-user/opensearch/plugins/opensearch-knn/lib/libopensearchknn_faiss.so)

The same nightlies have been running fine for lucene and nmslib engine types.
The OS process exits at create-target-index operation for faiss engine type.

The OpenSearch cluster is created on Amazon Linux 2 ec2-instances. The default GLIBC version installed on the host is 2.26.

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Create an OS-2.14.0 cluster with k-NN plugin
2. Run vectorsearch workload benchmark using opensearch-benchmark
3. See error

What is the expected behavior?
There should be no failure and benchmark should complete successfully.

What is your host/environment?

• OS: Amazon Linux 2

Do you have any screenshots?
If applicable, add screenshots to help explain your problem.

Do you have any additional context?
Add any other context about the problem.

[jmazanec15]

Related to opensearch-project/opensearch-build#4379 (comment). cc: @peterzhuamazon

With the change to Almalinux, AL2 will be deprecated for support because it has glibc 2.26 (https://repost.aws/questions/QUrXOioL46RcCnFGyELJWKLw/glibc-2-27-on-amazon-linux-2)

[jmazanec15]

So @rishabh6788 , post 2.14, AL2 will not be supported. Please confirm @peterzhuamazon

[jmazanec15]

Closing - this is discussed in opensearch-project/opensearch-build#4379 (comment).