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From "Robert Muir (JIRA)" <>
Subject [jira] Created: (LUCENE-2349) Tests should use unique temporary directories
Date Fri, 26 Mar 2010 07:26:27 GMT
Tests should use unique temporary directories

                 Key: LUCENE-2349
             Project: Lucene - Java
          Issue Type: Test
          Components: Build
    Affects Versions: 3.1
            Reporter: Robert Muir

We cannot safely use parallel tests (LUCENE-1709) because some test classes try to use temporary
directories with the same name.
So if these two happen to run at the same time, they conflict.

For example TestIndexReader has code like this:
File dirFile = new File(TEMP_DIR, "testIndex");

But TestCompoundFile has similar code:
File file = new File(TEMP_DIR, "testIndex");

If both these classes run at the same time, there will be problems.

If we want to use parallel tests safely, we have to fix this use of the static TEMP_DIR which
does not include any unique name of the test.
Ideally we can do this without changing a lot of test code, especially backwards.

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