@After
  public void cleanup() throws IOException {
    storeCopier.close();
    assertTrue(srcDir + " could not be deleted", StoreTestUtils.cleanDirectory(srcDir, true));
    assertTrue(tgtDir + " could not be deleted", StoreTestUtils.cleanDirectory(tgtDir, true));
  }
Releases all resources and deletes the temporary directories.
@throws IOException
ambry-tools/src/test/java/com/github/ambry/store/StoreCopierTest.java