[CI] ES818HnswBinaryQuantizedVectorsFormatTests testSimpleOffHeapSizeFSDir failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic-platform-support #8562 / windows-2025_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #8562 / windows-2022_checkpart1_platform-support-windows
• elasticsearch-periodic-platform-support #8562 / almalinux-8-aarch64_checkpart1_platform-support-arm
• elasticsearch-periodic-platform-support #8562 / ubuntu-2404-aarch64_checkpart1_platform-support-arm
• elasticsearch-periodic-platform-support #8562 / amazonlinux-2023_platform-support-aws
• elasticsearch-periodic-platform-support #8562 / ubuntu-2004-aarch64_checkpart1_platform-support-arm
• elasticsearch-periodic #8545 / single-processor-node-tests
• elasticsearch-periodic #8545 / concurrent-search-tests
• elasticsearch-periodic #8545 / encryption-at-rest
• elasticsearch-periodic-platform-support #8562 / rocky-8_platform-support-unix

Reproduction Line:

null

Applicable branches:
main

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: expected:<2> but was:<3>

Issue Reasons:

• [main] 23 consecutive failures in test testSimpleOffHeapSizeFSDir
• [main] 24 failures in test testSimpleOffHeapSizeFSDir (7.4% fail rate in 325 executions)

Note:
This issue was created using new test triage automation. Please report issues or feedback to es-delivery.

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 2 failures in test testSimpleOffHeapSizeFSDir (0.7% fail rate in 303 executions)

Build Scans:

• elasticsearch-periodic-platform-support #8562 / opensuse-leap-15_platform-support-unix
• elasticsearch-pull-request #73005 / part-1

[elasticsearchmachine]

Pinging @elastic/es-search-relevance (Team:Search Relevance)