private String getTableErrorMessage(final TSStatus status, final String database) {
    if (status.code == TSStatusCode.DATABASE_NOT_EXIST.getStatusCode()) {
      unsetDatabaseIfNotExist(database, SessionManager.getInstance().getCurrSession());
      return String.format("Unknown database %s", PathUtils.unQualifyDatabaseName(database));
    }
    return status.getMessage();
  }
FIXME Consolidate this clientManager with the upper one.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/execution/config/executor/ClusterConfigTaskExecutor.java