TestHLog doesn't clean up after itself
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Key: HBASE-4545
URL: https://issues.apache.org/jira/browse/HBASE-4545
Project: HBase
Issue Type: Bug
Components: test
Reporter: Gary Helmling
TestHLog has been hanging during shutdown of the mini cluster after all tests
are run. Further investigation shows that there are many places where the
TestHLog tests are not cleaning up after themselves.
Necessary changes are:
* since all tests use HLog directly, a MiniHBaseCluster is not needed. The
test should only launch a MiniDFSCluster
* several tests do not close the created HLog at completion
* the test class should shutdown the mini cluster in an @AfterClass method
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