archive-test fails intermittently

failure for TRA:
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Tests run: 309, Failures: 4, Errors: 0, Skipped: 0, Time elapsed: 25.163 sec <<< FAILURE! - in dk.netarkivet.archive.UnitTesterSuite
testChecksumCalls(dk.netarkivet.archive.arcrepository.ArcRepositoryTester) Time elapsed: 0.029 sec <<< FAILURE!
junit.framework.AssertionFailedError: Should have updated the store state expected:<UPLOAD_COMPLETED> but was:<UPLOAD_FAILED>
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.failNotEquals(Assert.java:282)
at junit.framework.Assert.assertEquals(Assert.java:64)
at dk.netarkivet.archive.arcrepository.ArcRepositoryTester.testOnBatchReply(ArcRepositoryTester.java:307)
at dk.netarkivet.archive.arcrepository.ArcRepositoryTester.testChecksumCalls(ArcRepositoryTester.java:435)

testOnBatchReply(dk.netarkivet.archive.arcrepository.ArcRepositoryTester) Time elapsed: 0.017 sec <<< FAILURE!
junit.framework.AssertionFailedError: Should have updated the store state expected:<UPLOAD_COMPLETED> but was:<UPLOAD_FAILED>
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.failNotEquals(Assert.java:282)
at junit.framework.Assert.assertEquals(Assert.java:64)
at dk.netarkivet.archive.arcrepository.ArcRepositoryTester.testOnBatchReply(ArcRepositoryTester.java:307)

testNotEmptyDatabase(dk.netarkivet.archive.tools.ReestablishAdminDatabaseTester) Time elapsed: 2.017 sec <<< FAILURE!
junit.framework.AssertionFailedError: Should have the exitcode 1 expected:<1> but was:<0>
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.failNotEquals(Assert.java:282)
at junit.framework.Assert.assertEquals(Assert.java:64)
at junit.framework.Assert.assertEquals(Assert.java:201)
at dk.netarkivet.archive.tools.ReestablishAdminDatabaseTester.testNotEmptyDatabase(ReestablishAdminDatabaseTester.java:130)

testSuccess(dk.netarkivet.archive.tools.ReestablishAdminDatabaseTester) Time elapsed: 0.66 sec <<< FAILURE!
junit.framework.AssertionFailedError: Should have the exitcode 0 expected:<0> but was:<1>
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.Assert.failNotEquals(Assert.java:282)
at junit.framework.Assert.assertEquals(Assert.java:64)
at junit.framework.Assert.assertEquals(Assert.java:201)
at dk.netarkivet.archive.tools.ReestablishAdminDatabaseTester.testSuccess(ReestablishAdminDatabaseTester.java:114)

Results :
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