@Override
  public void setConf(Configuration conf) {
    this.configuration = conf;
  }
Tool for validating that cluster can be upgraded from HBase 1.x to 2.0
<p>
Available validations:
<ul>
<li>validate-cp: Validates Co-processors compatibility</li>
<li>validate-dbe: Check Data Block Encoding for column families</li>
<li>validate-hfile: Check for corrupted HFiles</li>
</ul>
</p>
hbase-server/src/main/java/org/apache/hadoop/hbase/tool/PreUpgradeValidator.java