Ryan Ernst created LUCENE-5650:
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Summary: createTempDir and associated functions no longer create
java.io.tmpdir
Key: LUCENE-5650
URL: https://issues.apache.org/jira/browse/LUCENE-5650
Project: Lucene - Core
Issue Type: Bug
Reporter: Ryan Ernst
The recent refactoring to all the create temp file/dir functions (which is
great!) has a minor regression from what existed before. With the old
{{LuceneTestCase.TEMP_DIR}}, the directory was created if it did not exist.
So, if you set {{java.io.tmpdir}} to {{"./temp"}}, then it would create that
dir within the per jvm working dir. However, {{getBaseTempDirForClass()}} now
does asserts that check the dir exists, is a dir, and is writeable.
Lucene uses {{"."}} as {{java.io.tmpdir}}. Then in the test security manager,
the per jvm cwd has read/write/execute permissions. However, this allows tests
to write to their cwd, which I'm trying to protect against (by setting cwd to
read/execute in my test security manager).
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