@Override
    protected long snapshotsKeepTime(DefaultTableRuntime tableRuntime) {
      return tableRuntime.getTableConfiguration().getChangeDataTTLMinutes() * 60 * 1000;
    }
Table maintainer for mixed-iceberg and mixed-hive tables.
amoro-ams/src/main/java/org/apache/amoro/server/optimizing/maintainer/MixedTableMaintainer.java