Package org.apache.hadoop.hive.metastore.api

Examples of org.apache.hadoop.hive.metastore.api.ColumnStatistics

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      statsData.getStringStats().setNumNulls(numNulls);

      statsObj.setStatsData(statsData);
      statsObjs.add(statsObj);

      ColumnStatistics colStats = new ColumnStatistics();
      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

      // write stats objs persistently
      client.updateTableColumnStatistics(colStats);

      // retrieve the stats obj that was just written
      ColumnStatisticsObj colStats2 = client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[0])).get(0);

     // compare stats obj to ensure what we get is what we wrote
      assertNotNull(colStats2);
      assertEquals(colStats2.getColName(), colName[0]);
      assertEquals(colStats2.getStatsData().getDoubleStats().getLowValue(), lowValue);
      assertEquals(colStats2.getStatsData().getDoubleStats().getHighValue(), highValue);
      assertEquals(colStats2.getStatsData().getDoubleStats().getNumNulls(), numNulls);
      assertEquals(colStats2.getStatsData().getDoubleStats().getNumDVs(), numDVs);

      // test delete column stats; if no col name is passed all column stats associated with the
      // table is deleted
      boolean status = client.deleteTableColumnStatistics(dbName, tblName, null);
      assertTrue(status);
      // try to query stats for a column for which stats doesn't exist
      assertTrue(client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[1])).isEmpty());

      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

      // update table level column stats
      client.updateTableColumnStatistics(colStats);

      // query column stats for column whose stats were updated in the previous call
      colStats2 = client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[0])).get(0);

      // partition level column statistics test
      // create a table with multiple partitions
      cleanUp(dbName, tblName, typeName);

      List<List<String>> values = new ArrayList<List<String>>();
      values.add(makeVals("2008-07-01 14:13:12", "14"));
      values.add(makeVals("2008-07-01 14:13:12", "15"));
      values.add(makeVals("2008-07-02 14:13:12", "15"));
      values.add(makeVals("2008-07-03 14:13:12", "151"));

      createMultiPartitionTableSchema(dbName, tblName, typeName, values);

      List<String> partitions = client.listPartitionNames(dbName, tblName, (short)-1);

      partName = partitions.get(0);
      isTblLevel = false;

      // create a new columnstatistics desc to represent partition level column stats
      statsDesc = new ColumnStatisticsDesc();
      statsDesc.setDbName(dbName);
      statsDesc.setTableName(tblName);
      statsDesc.setPartName(partName);
      statsDesc.setIsTblLevel(isTblLevel);

      colStats = new ColumnStatistics();
      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

     client.updatePartitionColumnStatistics(colStats);

     colStats2 = client.getPartitionColumnStatistics(dbName, tblName,
         Lists.newArrayList(partName), Lists.newArrayList(colName[1])).get(partName).get(0);

     // compare stats obj to ensure what we get is what we wrote
     assertNotNull(colStats2);
     assertEquals(colStats.getStatsDesc().getPartName(), partName);
     assertEquals(colStats2.getColName(), colName[1]);
     assertEquals(colStats2.getStatsData().getStringStats().getMaxColLen(), maxColLen);
     assertEquals(colStats2.getStatsData().getStringStats().getAvgColLen(), avgColLen);
     assertEquals(colStats2.getStatsData().getStringStats().getNumNulls(), numNulls);
     assertEquals(colStats2.getStatsData().getStringStats().getNumDVs(), numDVs);
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      statsObj.setColType(colType.get(i));
      unpackStructObject(foi, f, fieldName, statsObj);
      statsObjs.add(statsObj);
    }

    ColumnStatistics colStats = new ColumnStatistics();
    colStats.setStatsDesc(statsDesc);
    colStats.setStatsObj(statsObjs);
    return colStats;
  }
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      e.printStackTrace();
    }

    if (io != null) {
      // Construct a column statistics object from the result
      ColumnStatistics colStats = constructColumnStatsFromPackedRow(io.oi, io.o);

      // Persist the column statistics object to the metastore
      try {
        db.updatePartitionColumnStatistics(colStats);
      } catch (Exception e) {
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      e.printStackTrace();
    }

    if (io != null) {
      // Construct a column statistics object from the result
      ColumnStatistics colStats = constructColumnStatsFromPackedRow(io.oi, io.o);

      // Persist the column statistics object to the metastore
      try {
        db.updateTableColumnStatistics(colStats);
      } catch (Exception e) {
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      statsData.getStringStats().setNumNulls(numNulls);

      statsObj.setStatsData(statsData);
      statsObjs.add(statsObj);

      ColumnStatistics colStats = new ColumnStatistics();
      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

      // write stats objs persistently
      client.updateTableColumnStatistics(colStats);

      // retrieve the stats obj that was just written
      ColumnStatisticsObj colStats2 = client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[0])).get(0);

     // compare stats obj to ensure what we get is what we wrote
      assertNotNull(colStats2);
      assertEquals(colStats2.getColName(), colName[0]);
      assertEquals(colStats2.getStatsData().getDoubleStats().getLowValue(), lowValue);
      assertEquals(colStats2.getStatsData().getDoubleStats().getHighValue(), highValue);
      assertEquals(colStats2.getStatsData().getDoubleStats().getNumNulls(), numNulls);
      assertEquals(colStats2.getStatsData().getDoubleStats().getNumDVs(), numDVs);

      // test delete column stats; if no col name is passed all column stats associated with the
      // table is deleted
      boolean status = client.deleteTableColumnStatistics(dbName, tblName, null);
      assertTrue(status);
      // try to query stats for a column for which stats doesn't exist
      assertTrue(client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[1])).isEmpty());

      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

      // update table level column stats
      client.updateTableColumnStatistics(colStats);

      // query column stats for column whose stats were updated in the previous call
      colStats2 = client.getTableColumnStatistics(
          dbName, tblName, Lists.newArrayList(colName[0])).get(0);

      // partition level column statistics test
      // create a table with multiple partitions
      cleanUp(dbName, tblName, typeName);

      List<List<String>> values = new ArrayList<List<String>>();
      values.add(makeVals("2008-07-01 14:13:12", "14"));
      values.add(makeVals("2008-07-01 14:13:12", "15"));
      values.add(makeVals("2008-07-02 14:13:12", "15"));
      values.add(makeVals("2008-07-03 14:13:12", "151"));

      createMultiPartitionTableSchema(dbName, tblName, typeName, values);

      List<String> partitions = client.listPartitionNames(dbName, tblName, (short)-1);

      partName = partitions.get(0);
      isTblLevel = false;

      // create a new columnstatistics desc to represent partition level column stats
      statsDesc = new ColumnStatisticsDesc();
      statsDesc.setDbName(dbName);
      statsDesc.setTableName(tblName);
      statsDesc.setPartName(partName);
      statsDesc.setIsTblLevel(isTblLevel);

      colStats = new ColumnStatistics();
      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);

     client.updatePartitionColumnStatistics(colStats);

     colStats2 = client.getPartitionColumnStatistics(dbName, tblName,
         Lists.newArrayList(partName), Lists.newArrayList(colName[1])).get(partName).get(0);

     // compare stats obj to ensure what we get is what we wrote
     assertNotNull(colStats2);
     assertEquals(colStats.getStatsDesc().getPartName(), partName);
     assertEquals(colStats2.getColName(), colName[1]);
     assertEquals(colStats2.getStatsData().getStringStats().getMaxColLen(), maxColLen);
     assertEquals(colStats2.getStatsData().getStringStats().getAvgColLen(), avgColLen);
     assertEquals(colStats2.getStatsData().getStringStats().getNumNulls(), numNulls);
     assertEquals(colStats2.getStatsData().getStringStats().getNumDVs(), numDVs);
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      dbName = dbName.toLowerCase();
      tableName = tableName.toLowerCase();
      colName = colName.toLowerCase();
      startFunction("get_column_statistics_by_table: db=" + dbName + " table=" + tableName +
                    " column=" + colName);
      ColumnStatistics statsObj = null;
      try {
        statsObj = getMS().getTableColumnStatistics(
            dbName, tableName, Lists.newArrayList(colName));
        assert statsObj.getStatsObjSize() <= 1;
        return statsObj;
      } finally {
        endFunction("get_column_statistics_by_table: ", statsObj != null, null, tableName);
      }
    }
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        throws MetaException, NoSuchObjectException, TException {
      String dbName = request.getDbName(), tblName = request.getTblName();
      startFunction("get_table_statistics_req: db=" + dbName + " table=" + tblName);
      TableStatsResult result = null;
      try {
        ColumnStatistics cs = getMS().getTableColumnStatistics(
            dbName, tblName, request.getColNames());
        result = new TableStatsResult(
            cs == null ? Lists.<ColumnStatisticsObj>newArrayList() : cs.getStatsObj());
      } finally {
        endFunction("get_table_statistics_req: ", result == null, null, tblName);
      }
      return result;
    }
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      tableName = tableName.toLowerCase();
      colName = colName.toLowerCase();
      String convertedPartName = lowerCaseConvertPartName(partName);
      startFunction("get_column_statistics_by_partition: db=" + dbName + " table=" + tableName +
          " partition=" + convertedPartName + " column=" + colName);
      ColumnStatistics statsObj = null;

      try {
        List<ColumnStatistics> list = getMS().getPartitionColumnStatistics(dbName, tableName,
            Lists.newArrayList(convertedPartName), Lists.newArrayList(colName));
        if (list.isEmpty()) return null;
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        }
        partName = Warehouse.makePartName(partColSchema, partVals);
      }

      ColumnStatisticsDesc statsDesc = getColumnStatsDesc(dbName, tableName, partName, isTblLevel);
      ColumnStatistics colStats = new ColumnStatistics();
      colStats.setStatsDesc(statsDesc);
      colStats.setStatsObj(statsObjs);
      stats.add(colStats);
    }
    ftOp.clearFetchContext();
    return stats;
  }
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  }

  private int persistTableStats() throws HiveException, MetaException, IOException {
    // Fetch result of the analyze table .. compute statistics for columns ..
    // Construct a column statistics object from the result
    ColumnStatistics colStats = constructColumnStatsFromPackedRows().get(0);
    // Persist the column statistics object to the metastore
    db.updateTableColumnStatistics(colStats);
    return 0;
  }
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