[CI] ClassificationIT testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean failing

[elasticsearchmachine]

Build Scans:

• elasticsearch-periodic #6325 / openjdk23_checkpart4_java-matrix
• elasticsearch-periodic #6311 / openjdk17_checkpart4_java-fips-matrix

Reproduction Line:

./gradlew ":x-pack:plugin:ml:qa:native-multi-node-tests:javaRestTest" --tests "org.elasticsearch.xpack.ml.integration.ClassificationIT.testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean" -Dtests.seed=8E54129AB6EE94ED -Dtests.locale=sw-KE -Dtests.timezone=Europe/Samara -Druntime.java=23

Applicable branches:
8.17

Reproduces locally?:
N/A

Failure History:
See dashboard

Failure Message:

java.lang.AssertionError: Stats were: {"id":"classification_training_percent_is_50_boolean","state":"started","progress":[{"phase":"reindexing","progress_percent":100},{"phase":"loading_data","progress_percent":100},{"phase":"feature_selection","progress_percent":100},{"phase":"coarse_parameter_search","progress_percent":86},{"phase":"fine_tuning_parameters","progress_percent":0},{"phase":"final_training","progress_percent":0},{"phase":"writing_results","progress_percent":0},{"phase":"inference","progress_percent":0}],"data_counts":{"training_docs_count":150,"test_docs_count":0,"skipped_docs_count":0},"memory_usage":{"timestamp":1739225691908,"peak_usage_bytes":19271,"status":"ok"},"node":{"id":"_ytH0VUOS9uO4khegPTUyA","name":"javaRestTest-1","ephemeral_id":"OjCLUkyFQpSp59sEbQp5tw","transport_address":"127.0.0.1:43773","attributes":{"transform.config_version":"10.0.0","testattr":"test","ml.allocated_processors":"32","ml.max_jvm_size":"536870912","ml.config_version":"12.0.0","ml.allocat
[truncated]

Issue Reasons:

• [8.17] 2 failures in test testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean (2.1% fail rate in 97 executions)
• [8.17] 2 failures in pipeline elasticsearch-periodic (50.0% fail rate in 4 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 8.18

Mute Reasons:

• [8.18] 2 failures in test testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean (0.5% fail rate in 390 executions)
• [8.18] 2 failures in step part4 (4.4% fail rate in 45 executions)
• [8.18] 2 failures in pipeline elasticsearch-intake (4.4% fail rate in 45 executions)

Build Scans:

• elasticsearch-intake #17232 / part4
• elasticsearch-intake #16911 / part4

[elasticsearchmachine]

Pinging @elastic/ml-core (Team:ML)

[elasticsearchmachine]

This has been muted on branch 8.x

Mute Reasons:

• [8.x] 2 failures in test testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean (1.4% fail rate in 148 executions)

Build Scans:

• elasticsearch-periodic #6228 / openjdk17_checkpart4_java-matrix
• elasticsearch-pull-request #55110 / part-4

[elasticsearchmachine]

This has been muted on branch main

Mute Reasons:

• [main] 2 failures in test testWithOnlyTrainingRowsAndTrainingPercentIsFifty_DependentVariableIsBoolean (0.5% fail rate in 423 executions)

Build Scans:

• elasticsearch-periodic #6265 / openjdk23_checkpart4_java-matrix
• elasticsearch-pull-request #55214 / part-4

[davidkyle]

Looks like a slow test timed out. See also #121928