@Before
  public void setStatsSource() {
    HiveConf.setVar(shell.getHiveConf(), HiveConf.ConfVars.HIVE_ICEBERG_STATS_SOURCE, statsSource);
  }
Tests verifying correct statistics generation behaviour on Iceberg tables triggered by: ANALYZE queries, inserts,
CTAS, etc...
iceberg/iceberg-handler/src/test/java/org/apache/iceberg/mr/hive/TestHiveIcebergStatistics.java