Examples with AggrStats org.apache.hadoop.hive.metastore.api.AggrStats used on opensource projects

Example 26 with AggrStats

use of org.apache.hadoop.hive.metastore.api.AggrStats in project hive by apache.

the class TestHBaseAggregateStatsCache method noneWithStats.

@Test
public void noneWithStats() throws Exception {
    String dbName = "default";
    String tableName = "nws";
    List<String> partVals1 = Arrays.asList("today");
    List<String> partVals2 = Arrays.asList("yesterday");
    long now = System.currentTimeMillis();
    List<FieldSchema> cols = new ArrayList<>();
    cols.add(new FieldSchema("col1", "boolean", "nocomment"));
    SerDeInfo serde = new SerDeInfo("serde", "seriallib", null);
    StorageDescriptor sd = new StorageDescriptor(cols, "file:/tmp", "input", "output", false, 0, serde, null, null, Collections.<String, String>emptyMap());
    List<FieldSchema> partCols = new ArrayList<>();
    partCols.add(new FieldSchema("ds", "string", ""));
    Table table = new Table(tableName, dbName, "me", (int) now, (int) now, 0, sd, partCols, Collections.<String, String>emptyMap(), null, null, null);
    store.createTable(table);
    for (List<String> partVals : Arrays.asList(partVals1, partVals2)) {
        StorageDescriptor psd = new StorageDescriptor(sd);
        psd.setLocation("file:/tmp/default/nws/ds=" + partVals.get(0));
        Partition part = new Partition(partVals, dbName, tableName, (int) now, (int) now, psd, Collections.<String, String>emptyMap());
        store.addPartition(part);
    }
    Checker statChecker = new Checker() {

        @Override
        public void checkStats(AggrStats aggrStats) throws Exception {
            Assert.assertEquals(0, aggrStats.getPartsFound());
        }
    };
    AggrStats aggrStats = store.get_aggr_stats_for(dbName, tableName, Arrays.asList("ds=today", "ds=yesterday"), Arrays.asList("col1"));
    statChecker.checkStats(aggrStats);
}

Example 27 with AggrStats

use of org.apache.hadoop.hive.metastore.api.AggrStats in project hive by apache.

the class TestHBaseAggregateStatsCacheWithBitVector method allPartitions.

@Test
public void allPartitions() throws Exception {
    String dbName = "default";
    String tableName = "snp";
    List<String> partVals1 = Arrays.asList("today");
    List<String> partVals2 = Arrays.asList("yesterday");
    long now = System.currentTimeMillis();
    List<FieldSchema> cols = new ArrayList<>();
    cols.add(new FieldSchema("col1", "boolean", "nocomment"));
    SerDeInfo serde = new SerDeInfo("serde", "seriallib", null);
    StorageDescriptor sd = new StorageDescriptor(cols, "file:/tmp", "input", "output", false, 0, serde, null, null, Collections.<String, String>emptyMap());
    List<FieldSchema> partCols = new ArrayList<>();
    partCols.add(new FieldSchema("ds", "string", ""));
    Table table = new Table(tableName, dbName, "me", (int) now, (int) now, 0, sd, partCols, Collections.<String, String>emptyMap(), null, null, null);
    store.createTable(table);
    StorageDescriptor psd = new StorageDescriptor(sd);
    psd.setLocation("file:/tmp/default/hit/ds=" + partVals1.get(0));
    Partition part = new Partition(partVals1, dbName, tableName, (int) now, (int) now, psd, Collections.<String, String>emptyMap());
    store.addPartition(part);
    psd = new StorageDescriptor(sd);
    psd.setLocation("file:/tmp/default/hit/ds=" + partVals2.get(0));
    part = new Partition(partVals2, dbName, tableName, (int) now, (int) now, psd, Collections.<String, String>emptyMap());
    store.addPartition(part);
    ColumnStatistics cs = new ColumnStatistics();
    ColumnStatisticsDesc desc = new ColumnStatisticsDesc(false, dbName, tableName);
    desc.setLastAnalyzed(now);
    desc.setPartName("ds=" + partVals1.get(0));
    cs.setStatsDesc(desc);
    ColumnStatisticsObj obj = new ColumnStatisticsObj();
    obj.setColName("col1");
    obj.setColType("double");
    ColumnStatisticsData data = new ColumnStatisticsData();
    DoubleColumnStatsData dcsd = new DoubleColumnStatsData();
    dcsd.setHighValue(1000.2342343);
    dcsd.setLowValue(-20.1234213423);
    dcsd.setNumNulls(30);
    dcsd.setNumDVs(12342);
    dcsd.setBitVectors("{0, 4, 5, 7}{0, 1}{0, 1, 2}{0, 1, 4}{0}{0, 2}{0, 3}{0, 2, 3, 4}{0, 1, 4}{0, 1}{0}{0, 1, 3, 8}{0, 2}{0, 2}{0, 9}{0, 1, 4}");
    data.setDoubleStats(dcsd);
    obj.setStatsData(data);
    cs.addToStatsObj(obj);
    store.updatePartitionColumnStatistics(cs, partVals1);
    cs = new ColumnStatistics();
    desc = new ColumnStatisticsDesc(false, dbName, tableName);
    desc.setLastAnalyzed(now);
    desc.setPartName("ds=" + partVals2.get(0));
    cs.setStatsDesc(desc);
    obj = new ColumnStatisticsObj();
    obj.setColName("col1");
    obj.setColType("double");
    data = new ColumnStatisticsData();
    dcsd = new DoubleColumnStatsData();
    dcsd.setHighValue(1000.2342343);
    dcsd.setLowValue(-20.1234213423);
    dcsd.setNumNulls(30);
    dcsd.setNumDVs(12342);
    dcsd.setBitVectors("{0, 1}{0, 1}{1, 2, 4}{0, 1, 2}{0, 1, 2}{0, 2}{0, 1, 3, 4}{0, 1}{0, 1}{3, 4, 6}{2}{0, 1}{0, 3}{0}{0, 1}{0, 1, 4}");
    data.setDoubleStats(dcsd);
    obj.setStatsData(data);
    cs.addToStatsObj(obj);
    store.updatePartitionColumnStatistics(cs, partVals2);
    Checker statChecker = new Checker() {

        @Override
        public void checkStats(AggrStats aggrStats) throws Exception {
            Assert.assertEquals(2, aggrStats.getPartsFound());
            Assert.assertEquals(1, aggrStats.getColStatsSize());
            ColumnStatisticsObj cso = aggrStats.getColStats().get(0);
            Assert.assertEquals("col1", cso.getColName());
            Assert.assertEquals("double", cso.getColType());
            DoubleColumnStatsData dcsd = cso.getStatsData().getDoubleStats();
            Assert.assertEquals(1000.23, dcsd.getHighValue(), 0.01);
            Assert.assertEquals(-20.12, dcsd.getLowValue(), 0.01);
            Assert.assertEquals(60, dcsd.getNumNulls());
            Assert.assertEquals(5, dcsd.getNumDVs());
        // we do not store the bitvector for the aggrStats.
        // we can store that if it is necessary in the future.
        }
    };
    AggrStats aggrStats = store.get_aggr_stats_for(dbName, tableName, Arrays.asList("ds=today", "ds=yesterday"), Arrays.asList("col1"));
    statChecker.checkStats(aggrStats);
    // Check that we had to build it from the stats
    Assert.assertEquals(0, store.backdoor().getStatsCache().hbaseHits.getCnt());
    Assert.assertEquals(1, store.backdoor().getStatsCache().totalGets.getCnt());
    Assert.assertEquals(1, store.backdoor().getStatsCache().misses.getCnt());
    // Call again, this time it should come from memory. Also, reverse the name
    // order this time
    // to assure that we still hit.
    aggrStats = store.get_aggr_stats_for(dbName, tableName, Arrays.asList("ds=yesterday", "ds=today"), Arrays.asList("col1"));
    statChecker.checkStats(aggrStats);
    Assert.assertEquals(0, store.backdoor().getStatsCache().hbaseHits.getCnt());
    Assert.assertEquals(2, store.backdoor().getStatsCache().totalGets.getCnt());
    Assert.assertEquals(1, store.backdoor().getStatsCache().misses.getCnt());
}

Example 28 with AggrStats

use of org.apache.hadoop.hive.metastore.api.AggrStats in project hive by apache.

the class TestHBaseAggregateStatsExtrapolation method TwoEndsOfPartitionsHaveBitVectorStatus.

@Test
public void TwoEndsOfPartitionsHaveBitVectorStatus() throws Exception {
    String dbName = "default";
    String tableName = "snp";
    long now = System.currentTimeMillis();
    List<FieldSchema> cols = new ArrayList<>();
    cols.add(new FieldSchema("col3", "long", "nocomment"));
    SerDeInfo serde = new SerDeInfo("serde", "seriallib", null);
    StorageDescriptor sd = new StorageDescriptor(cols, "file:/tmp", "input", "output", false, 0, serde, null, null, Collections.<String, String>emptyMap());
    List<FieldSchema> partCols = new ArrayList<>();
    partCols.add(new FieldSchema("ds", "string", ""));
    Table table = new Table(tableName, dbName, "me", (int) now, (int) now, 0, sd, partCols, Collections.<String, String>emptyMap(), null, null, null);
    store.createTable(table);
    List<List<String>> partVals = new ArrayList<>();
    for (int i = 0; i < 10; i++) {
        List<String> partVal = Arrays.asList("" + i);
        partVals.add(partVal);
        StorageDescriptor psd = new StorageDescriptor(sd);
        psd.setLocation("file:/tmp/default/hit/ds=" + partVal);
        Partition part = new Partition(partVal, dbName, tableName, (int) now, (int) now, psd, Collections.<String, String>emptyMap());
        store.addPartition(part);
        if (i < 2 || i > 7) {
            ColumnStatistics cs = new ColumnStatistics();
            ColumnStatisticsDesc desc = new ColumnStatisticsDesc(false, dbName, tableName);
            desc.setLastAnalyzed(now);
            desc.setPartName("ds=" + partVal);
            cs.setStatsDesc(desc);
            ColumnStatisticsObj obj = new ColumnStatisticsObj();
            obj.setColName("col3");
            obj.setColType("long");
            ColumnStatisticsData data = new ColumnStatisticsData();
            LongColumnStatsData dcsd = new LongColumnStatsData();
            dcsd.setHighValue(1000 + i);
            dcsd.setLowValue(-1000 - i);
            dcsd.setNumNulls(i);
            dcsd.setNumDVs(10 * i);
            dcsd.setBitVectors(bitVectors);
            data.setLongStats(dcsd);
            obj.setStatsData(data);
            cs.addToStatsObj(obj);
            store.updatePartitionColumnStatistics(cs, partVal);
        }
    }
    Checker statChecker = new Checker() {

        @Override
        public void checkStats(AggrStats aggrStats) throws Exception {
            Assert.assertEquals(4, aggrStats.getPartsFound());
            Assert.assertEquals(1, aggrStats.getColStatsSize());
            ColumnStatisticsObj cso = aggrStats.getColStats().get(0);
            Assert.assertEquals("col3", cso.getColName());
            Assert.assertEquals("long", cso.getColType());
            LongColumnStatsData lcsd = cso.getStatsData().getLongStats();
            Assert.assertEquals(1010, lcsd.getHighValue(), 0.01);
            Assert.assertEquals(-1010, lcsd.getLowValue(), 0.01);
            Assert.assertEquals(45, lcsd.getNumNulls());
            Assert.assertEquals(3, lcsd.getNumDVs());
        }
    };
    List<String> partNames = new ArrayList<>();
    for (int i = 0; i < 10; i++) {
        partNames.add("ds=" + i);
    }
    AggrStats aggrStats = store.get_aggr_stats_for(dbName, tableName, partNames, Arrays.asList("col3"));
    statChecker.checkStats(aggrStats);
}

Example 29 with AggrStats

use of org.apache.hadoop.hive.metastore.api.AggrStats in project hive by apache.

the class TestHBaseAggregateStatsExtrapolation method noPartitionsHaveBitVectorStatus.

@Test
public void noPartitionsHaveBitVectorStatus() throws Exception {
    String dbName = "default";
    String tableName = "snp";
    long now = System.currentTimeMillis();
    List<FieldSchema> cols = new ArrayList<>();
    cols.add(new FieldSchema("col2", "long", "nocomment"));
    SerDeInfo serde = new SerDeInfo("serde", "seriallib", null);
    StorageDescriptor sd = new StorageDescriptor(cols, "file:/tmp", "input", "output", false, 0, serde, null, null, Collections.<String, String>emptyMap());
    List<FieldSchema> partCols = new ArrayList<>();
    partCols.add(new FieldSchema("ds", "string", ""));
    Table table = new Table(tableName, dbName, "me", (int) now, (int) now, 0, sd, partCols, Collections.<String, String>emptyMap(), null, null, null);
    store.createTable(table);
    List<List<String>> partVals = new ArrayList<>();
    for (int i = 0; i < 10; i++) {
        List<String> partVal = Arrays.asList("" + i);
        partVals.add(partVal);
        StorageDescriptor psd = new StorageDescriptor(sd);
        psd.setLocation("file:/tmp/default/hit/ds=" + partVal);
        Partition part = new Partition(partVal, dbName, tableName, (int) now, (int) now, psd, Collections.<String, String>emptyMap());
        store.addPartition(part);
        ColumnStatistics cs = new ColumnStatistics();
        ColumnStatisticsDesc desc = new ColumnStatisticsDesc(false, dbName, tableName);
        desc.setLastAnalyzed(now);
        desc.setPartName("ds=" + partVal);
        cs.setStatsDesc(desc);
        ColumnStatisticsObj obj = new ColumnStatisticsObj();
        obj.setColName("col2");
        obj.setColType("long");
        ColumnStatisticsData data = new ColumnStatisticsData();
        LongColumnStatsData dcsd = new LongColumnStatsData();
        dcsd.setHighValue(1000 + i);
        dcsd.setLowValue(-1000 - i);
        dcsd.setNumNulls(i);
        dcsd.setNumDVs(10 * i);
        data.setLongStats(dcsd);
        obj.setStatsData(data);
        cs.addToStatsObj(obj);
        store.updatePartitionColumnStatistics(cs, partVal);
    }
    Checker statChecker = new Checker() {

        @Override
        public void checkStats(AggrStats aggrStats) throws Exception {
            Assert.assertEquals(10, aggrStats.getPartsFound());
            Assert.assertEquals(1, aggrStats.getColStatsSize());
            ColumnStatisticsObj cso = aggrStats.getColStats().get(0);
            Assert.assertEquals("col2", cso.getColName());
            Assert.assertEquals("long", cso.getColType());
            LongColumnStatsData lcsd = cso.getStatsData().getLongStats();
            Assert.assertEquals(1009, lcsd.getHighValue(), 0.01);
            Assert.assertEquals(-1009, lcsd.getLowValue(), 0.01);
            Assert.assertEquals(45, lcsd.getNumNulls());
            Assert.assertEquals(90, lcsd.getNumDVs());
        }
    };
    List<String> partNames = new ArrayList<>();
    for (int i = 0; i < 10; i++) {
        partNames.add("ds=" + i);
    }
    AggrStats aggrStats = store.get_aggr_stats_for(dbName, tableName, partNames, Arrays.asList("col2"));
    statChecker.checkStats(aggrStats);
}

Example 30 with AggrStats

use of org.apache.hadoop.hive.metastore.api.AggrStats in project hive by apache.

the class HBaseStore method get_aggr_stats_for.

/**
   * Return aggregated statistics for each column in the colNames list aggregated over partitions in
   * the partNames list
   *
   */
@Override
public AggrStats get_aggr_stats_for(String dbName, String tblName, List<String> partNames, List<String> colNames) throws MetaException, NoSuchObjectException {
    List<List<String>> partVals = new ArrayList<List<String>>(partNames.size());
    for (String partName : partNames) {
        partVals.add(partNameToVals(partName));
    }
    boolean commit = false;
    boolean hasAnyStats = false;
    openTransaction();
    try {
        AggrStats aggrStats = new AggrStats();
        aggrStats.setPartsFound(0);
        for (String colName : colNames) {
            try {
                AggrStats oneCol = getHBase().getStatsCache().get(dbName, tblName, partNames, colName);
                if (oneCol.getColStatsSize() > 0) {
                    assert oneCol.getColStatsSize() == 1;
                    aggrStats.setPartsFound(oneCol.getPartsFound());
                    aggrStats.addToColStats(oneCol.getColStats().get(0));
                    hasAnyStats = true;
                }
            } catch (CacheLoader.InvalidCacheLoadException e) {
                LOG.debug("Found no stats for column " + colName);
            // This means we have no stats at all for this column for these partitions, so just
            // move on.
            }
        }
        commit = true;
        if (!hasAnyStats) {
            // Set the required field.
            aggrStats.setColStats(new ArrayList<ColumnStatisticsObj>());
        }
        return aggrStats;
    } catch (IOException e) {
        LOG.error("Unable to fetch aggregate column statistics", e);
        throw new MetaException("Failed fetching aggregate column statistics, " + e.getMessage());
    } finally {
        commitOrRoleBack(commit);
    }
}