[
https://issues.apache.org/jira/browse/NIFI-9818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Jiazhen Xu updated NIFI-9818:
-----------------------------
Description:
*{*}Description{*}*
Four tests in `nifi-record`
(`org.apache.nifi.serialization.record.TestMapRecord#testDefaultValueWithAliasValue`
and`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)](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
```
*{*}Fix Changes{*}*
Use LinkedHashMap/LinkedHashSet instead of HashMap/HashSet in the test.
was:
**Description**
Four tests in `nifi-record`
(`org.apache.nifi.serialization.record.TestMapRecord#testDefaultValueWithAliasValue`
and`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)](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
```
**Fix Changes**
Use LinkedHashMap/LinkedHashSet instead of HashMap/HashSet in the test.
> Flaky tests due to HashMap/HashSet in nifi-record
> --------------------------------------------------
>
> Key: NIFI-9818
> URL: https://issues.apache.org/jira/browse/NIFI-9818
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Jiazhen Xu
> Priority: Major
>
> *{*}Description{*}*
> Four tests in `nifi-record`
> (`org.apache.nifi.serialization.record.TestMapRecord#testDefaultValueWithAliasValue`
>
> and`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)](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
> ```
> *{*}Fix Changes{*}*
> Use LinkedHashMap/LinkedHashSet instead of HashMap/HashSet in the test.
>
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