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https://issues.apache.org/jira/browse/NIFI-10592?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joe Witt resolved NIFI-10592.
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Resolution: Fixed
> flaky tests caused by the nondeterministic order of HashMap
> -----------------------------------------------------------
>
> Key: NIFI-10592
> URL: https://issues.apache.org/jira/browse/NIFI-10592
> Project: Apache NiFi
> Issue Type: Bug
> Reporter: Yanni Zhou
> Priority: Minor
> Fix For: 1.19.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> The tests below were found flaky because of the use of HashMaps and HashSet.
> The orders of elements in the HashMaps and HashSet are not the same every
> time being called. In this case, LinkedHashMap and LinkedHashSet is applied
> to replace Hash in order to ensure the orders are not changing.
> *org.apache.nifi.reporting.prometheus.TestPrometheusRecordSink.testSendData*
> *org.apache.nifi.reporting.azure.loganalytics.TestAzureLogAnalyticsProvenanceReportingTask.testAddField2*
> *org.apache.nifi.distributed.cache.server.map.DistributedMapCacheTest.testSubMap*
> It matters to fix this flaky test as it may cause potential issues due to the
> uncertainty of orders from HashMaps and HashSet rather than the program
> itself.
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