[jira] [Created] (FLINK-5817) Fix test concurrent execution failure by test dir conflicts.

[Shang Yuanchun (Jira)]

Wenlong Lyu created FLINK-5817:
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             Summary: Fix test concurrent execution failure by test dir conflicts.
                 Key: FLINK-5817
                 URL: https://issues.apache.org/jira/browse/FLINK-5817
             Project: Flink
          Issue Type: Bug
            Reporter: Wenlong Lyu
            Assignee: Wenlong Lyu


Currently when different users build flink on the same machine, failure may happen because some test utilities create test file using the fixed name, which will cause file access failing when different user processing the same file at the same time.
We have found errors from AbstractTestBase, IOManagerTest, FileCacheTest.



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