@Override
    protected HStore instantiateHStore(final ColumnFamilyDescriptor family, boolean warmup)
      throws IOException {
      if (family.isMobEnabled()) {
        if (HFile.getFormatVersion(this.conf) < HFile.MIN_FORMAT_VERSION_WITH_TAGS) {
          throw new IOException("A minimum HFile version of " + HFile.MIN_FORMAT_VERSION_WITH_TAGS
            + " is required for MOB feature. Consider setting " + HFile.FORMAT_VERSION_KEY
            + " accordingly.");
        }
        return new HMobStore(this, family, this.conf, warmup);
      }
      return new HStoreForTesting(this, family, this.conf, warmup);
    }
Create HStore instance.
@return If Mob is enabled, return HMobStore, otherwise return HStoreForTesting.
hbase-server/src/test/java/org/apache/hadoop/hbase/regionserver/TestHRegion.java