Michael Dodge commented on GEODE-5035:

Modifying {{build.gradle}} to explicitly pass the value of {{java.io.tmpdir}} 
down to the JVMs it invokes resulted in hundreds of test failures with stack 
traces like:
{{java.io.IOException: No such file or directory
            at java.io.UnixFileSystem.createFileExclusively(Native Method)
            at java.io.File.createTempFile(File.java:2024)
            at org.junit.rules.TemporaryFolder.create(TemporaryFolder.java:59)

> Some tests use incorrect temp directory
> ---------------------------------------
>                 Key: GEODE-5035
>                 URL: https://issues.apache.org/jira/browse/GEODE-5035
>             Project: Geode
>          Issue Type: Improvement
>          Components: tests
>            Reporter: Michael Dodge
>            Assignee: Michael Dodge
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 1h
>  Remaining Estimate: 0h
> Some tests that use {{JUnit}}'s {{TemporaryFolder}} rule (e.g., 
> {{DiskSpaceLimitIntegrationTest}} {{FileProcessControllerIntegrationTest}}) 
> do not specify the temp directory to use as the parent folder for the 
> temporary folder. This can result in the default location being used, which 
> is different from what is specified by the pipeline. This can result in 
> strange behavior, such as a test writing contents to a temporary file without 
> exception but then failing an existence test on the same file.
> The {{TemporaryFolder}} rule should be synchronized with the 
> {{java.io.tmpdir}} system property.

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