[NIFI-9818] Flaky tests due to HashMap/HashSet in nifi-record

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.16.0
• Assignee: Unassigned
• Reporter: Jiazhen Xu
• Created: 21/Mar/22 03:54
• Updated: 21/Mar/22 12:24
• Resolved: 21/Mar/22 12:24

Description

Four tests in nifi-record (org.apache.nifi.serialization.record.TestMapRecord#testDefaultValueWithAliasValue org.apache.nifi.serialization.record.TestMapRecord#testAliasConflictingAliasValues, org.apache.nifi.serialization.record.TestDataTypeUtils#testInferTypeWithMapStringKeys, and org.apache.nifi.serialization.record.TestDataTypeUtils#testInferTypeWithMapNonStringKeys) can fail due to the non-deterministic order of iteration of HashMap and HashSet.

One can manifest this problem using [[NonDex](https://github.com/TestingResearchIllinois/NonDex)]

mvn install -pl nifi-commons/nifi-record -am
mvn -pl nifi-commons/nifi-record edu.illinois:nondex-maven-plugin:1.1.2:nondex -Dtest=org.apache.nifi.serialization.record.TestMapRecord#testAliasConflictingAliasValues
mvn -pl nifi-commons/nifi-record edu.illinois:nondex-maven-plugin:1.1.2:nondex -Dtest=org.apache.nifi.serialization.record.TestMapRecord#testDefaultValueWithAliasValue
mvn -pl nifi-commons/nifi-record edu.illinois:nondex-maven-plugin:1.1.2:nondex -Dtest=org.apache.nifi.serialization.record.TestDataTypeUtils#testInferTypeWithMapStringKeys
mvn -pl nifi-commons/nifi-record edu.illinois:nondex-maven-plugin:1.1.2:nondex -Dtest=org.apache.nifi.serialization.record.TestDataTypeUtils#testInferTypeWithMapNonStringKe 

Use LinkedHashMap/LinkedHashSet instead of HashMap/HashSet in the test can solve the problem.

 

Issue Links

• links to: GitHub Pull Request #5883