Method load

fe/src/main/java/org/apache/impala/catalog/HBaseTable.java:100–138

For hbase tables, we can support tables with columns we don't understand at all (e.g. map) as long as the user does not select those. This is in contrast to hdfs tables since we typically need to understand all columns to make sense of the file at all.

(boolean reuseMetadata, IMetaStoreClient client,
      org.apache.hadoop.hive.metastore.api.Table msTbl, String reason,
      EventSequence catalogTimeline)

   * of the file at all.
   */
  @Override
  public void load(boolean reuseMetadata, IMetaStoreClient client,
      org.apache.hadoop.hive.metastore.api.Table msTbl, String reason,
      EventSequence catalogTimeline) throws TableLoadingException {
    Preconditions.checkNotNull(getMetaStoreTable());
    Table.LOADING_TABLES.incrementAndGet();
    try (Timer.Context timer = getMetrics().getTimer(Table.LOAD_DURATION_METRIC).time()) {
      msTable_ = msTbl;
      final Timer.Context storageLoadTimer =
          getMetrics().getTimer(Table.LOAD_DURATION_STORAGE_METADATA).time();
      List<Column> cols;
      try {
        hbaseTableName_ = Util.getHBaseTableName(getMetaStoreTable());
        // Warm up the connection and verify the table exists.
        Util.getHBaseTable(hbaseTableName_).close();
        catalogTimeline.markEvent("Checked HBase table exists");
        columnFamilies_ = null;
        // Warm up the connection and verify the table exists.
        getColumnFamilies();
        cols = Util.loadColumns(msTable_);
      } finally {
        storageMetadataLoadTime_ = storageLoadTimer.stop();
      }
      clearColumns();
      for (Column col : cols) addColumn(col);
      // Set table stats.
      setTableStats(msTable_);
      // since we don't support composite hbase rowkeys yet, all hbase tables have a
      // single clustering col
      numClusteringCols_ = 1;
      loadAllColumnStats(client, catalogTimeline);
      refreshLastUsedTime();
    } catch (Exception e) {
      throw new TableLoadingException("Failed to load metadata for HBase table: " + name_,
          e);
    } finally {
      Table.LOADING_TABLES.decrementAndGet();
    }
  }

  @Override
  protected void loadFromThrift(TTable table) throws TableLoadingException {