Tests should use unique temporary directories
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Key: LUCENE-2349
URL: https://issues.apache.org/jira/browse/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:
{code}
File dirFile = new File(TEMP_DIR, "testIndex");
{code}
But TestCompoundFile has similar code:
{code}
File file = new File(TEMP_DIR, "testIndex");
{code}
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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