@Before
  public void setUp() throws Exception {
    FileStatus[] entries = fs.listStatus(new Path("/"));
    for (FileStatus dir : entries) {
      fs.delete(dir.getPath(), true);
    }
  }
Tests for TestFSHLogProvider which use WALPerformanceEvaluation for WAL data creation. This class
was created as part of refactoring for hbase-diagnostics module creation in HBASE-28432 to break
cyclic dependency.
hbase-diagnostics/src/test/java/org/apache/hadoop/hbase/wal/TestFSHLogProviderWithConcurrentWrites.java