Examples with ColumnStatisticsCollector org.apache.ignite.internal.processors.query.stat.ColumnStatisticsCollector used on opensource projects

Example 1 with ColumnStatisticsCollector

use of org.apache.ignite.internal.processors.query.stat.ColumnStatisticsCollector in project ignite by apache.

the class GatherPartitionStatistics method recollectPartition.

/**
 * Collect some statistics, fix existing in repo and return resulting partition statistics.
 *
 * @param cctx Cache context to get partition from.
 * @param partStat Existing partition statistics to fix or use as a base.
 * @param colsToCollect Columns to collect.
 * @param colsToRemove Columns to remove.
 * @return New partition statistics.
 */
private ObjectPartitionStatisticsImpl recollectPartition(GridCacheContext<?, ?> cctx, ObjectPartitionStatisticsImpl partStat, Map<String, StatisticsColumnConfiguration> colsToCollect, Set<String> colsToRemove) {
    CacheGroupContext grp = cctx.group();
    GridDhtPartitionTopology top = grp.topology();
    AffinityTopologyVersion topVer = top.readyTopologyVersion();
    GridDhtLocalPartition locPart = top.localPartition(partId, topVer, false);
    if (locPart == null)
        throw new GatherStatisticCancelException();
    boolean reserved = locPart.reserve();
    GridH2Table tbl = gathCtx.table();
    ObjectPartitionStatisticsImpl res = null;
    try {
        if (!reserved || (locPart.state() != OWNING)) {
            if (log.isDebugEnabled()) {
                log.debug("Partition not owning. Need to retry [part=" + partId + ", tbl=" + tbl.identifier() + ']');
            }
            throw new GatherStatisticCancelException();
        }
        Column[] cols = IgniteStatisticsHelper.filterColumns(tbl.getColumns(), colsToCollect.keySet());
        ColumnStatisticsCollector[] collectors = new ColumnStatisticsCollector[cols.length];
        for (int i = 0; i < cols.length; ++i) {
            long colCfgVer = colsToCollect.get(cols[i].getName()).version();
            collectors[i] = new ColumnStatisticsCollector(cols[i], tbl::compareTypeSafe, colCfgVer);
        }
        GridH2RowDescriptor rowDesc = tbl.rowDescriptor();
        GridQueryTypeDescriptor typeDesc = rowDesc.type();
        try {
            int checkInt = CANCELLED_CHECK_INTERVAL;
            if (log.isDebugEnabled()) {
                log.debug("Start partition scan [part=" + partId + ", tbl=" + gathCtx.table().identifier() + ']');
            }
            for (CacheDataRow row : grp.offheap().cachePartitionIterator(gathCtx.table().cacheId(), partId, null, false)) {
                if (--checkInt == 0) {
                    if (gathCtx.future().isCancelled())
                        throw new GatherStatisticCancelException();
                    checkInt = CANCELLED_CHECK_INTERVAL;
                }
                if (!typeDesc.matchType(row.value()) || wasExpired(row))
                    continue;
                H2Row h2row = rowDesc.createRow(row);
                for (ColumnStatisticsCollector colStat : collectors) colStat.add(h2row.getValue(colStat.col().getColumnId()));
            }
        } catch (IgniteCheckedException e) {
            log.warning(String.format("Unable to collect partition level statistics by %s.%s:%d due to %s", tbl.identifier().schema(), tbl.identifier().table(), partId, e.getMessage()));
            throw new IgniteException("Unable to collect partition level statistics", e);
        }
        Map<String, ColumnStatistics> colStats = Arrays.stream(collectors).collect(Collectors.toMap(csc -> csc.col().getName(), ColumnStatisticsCollector::finish));
        // Add existing to full replace existing statistics with new one.
        if (partStat != null) {
            for (Map.Entry<String, ColumnStatistics> oldColStat : partStat.columnsStatistics().entrySet()) {
                if (!colsToRemove.contains(oldColStat.getKey()))
                    colStats.putIfAbsent(oldColStat.getKey(), oldColStat.getValue());
            }
        }
        res = new ObjectPartitionStatisticsImpl(partId, getRowCount(colStats), locPart.updateCounter(), colStats);
    } finally {
        if (reserved)
            locPart.release();
    }
    statRepo.replaceLocalPartitionStatistics(gathCtx.configuration().key(), res);
    if (gathCtx.configuration().columns().size() == colsToCollect.size())
        statRepo.refreshObsolescence(gathCtx.configuration().key(), partId);
    return res;
}

Example 2 with ColumnStatisticsCollector

use of org.apache.ignite.internal.processors.query.stat.ColumnStatisticsCollector in project gridgain by gridgain.

the class GatherPartitionStatistics method recollectPartition.

/**
 * Collect some statistics, fix existing in repo and return resulting partition statistics.
 *
 * @param cctx Cache context to get partition from.
 * @param partStat Existing partition statistics to fix or use as a base.
 * @param colsToCollect Columns to collect.
 * @param colsToRemove Columns to remove.
 * @return New partition statistics.
 */
private ObjectPartitionStatisticsImpl recollectPartition(GridCacheContext<?, ?> cctx, ObjectPartitionStatisticsImpl partStat, Map<String, StatisticsColumnConfiguration> colsToCollect, Set<String> colsToRemove) {
    CacheGroupContext grp = cctx.group();
    GridDhtPartitionTopology top = grp.topology();
    AffinityTopologyVersion topVer = top.readyTopologyVersion();
    GridDhtLocalPartition locPart = top.localPartition(partId, topVer, false);
    if (locPart == null)
        throw new GatherStatisticCancelException();
    boolean reserved = locPart.reserve();
    GridH2Table tbl = gathCtx.table();
    ObjectPartitionStatisticsImpl res = null;
    try {
        if (!reserved || (locPart.state() != OWNING)) {
            if (log.isDebugEnabled()) {
                log.debug("Partition not owning. Need to retry [part=" + partId + ", tbl=" + tbl.identifier() + ']');
            }
            throw new GatherStatisticCancelException();
        }
        Column[] cols = IgniteStatisticsHelper.filterColumns(tbl.getColumns(), colsToCollect.keySet());
        ColumnStatisticsCollector[] collectors = new ColumnStatisticsCollector[cols.length];
        for (int i = 0; i < cols.length; ++i) {
            long colCfgVer = colsToCollect.get(cols[i].getName()).version();
            collectors[i] = new ColumnStatisticsCollector(cols[i], tbl::compareValues, colCfgVer);
        }
        GridH2RowDescriptor rowDesc = tbl.rowDescriptor();
        GridQueryTypeDescriptor typeDesc = rowDesc.type();
        try {
            int checkInt = CANCELLED_CHECK_INTERVAL;
            if (log.isDebugEnabled()) {
                log.debug("Start partition scan [part=" + partId + ", tbl=" + gathCtx.table().identifier() + ']');
            }
            for (CacheDataRow row : grp.offheap().cachePartitionIterator(gathCtx.table().cacheId(), partId, null, false)) {
                if (--checkInt == 0) {
                    if (gathCtx.future().isCancelled())
                        throw new GatherStatisticCancelException();
                    checkInt = CANCELLED_CHECK_INTERVAL;
                }
                if (!typeDesc.matchType(row.value()) || wasExpired(row))
                    continue;
                H2Row h2row = rowDesc.createRow(row);
                for (ColumnStatisticsCollector colStat : collectors) colStat.add(h2row.getValue(colStat.col().getColumnId()));
            }
        } catch (IgniteCheckedException e) {
            log.warning(String.format("Unable to collect partition level statistics by %s.%s:%d due to %s", tbl.identifier().schema(), tbl.identifier().table(), partId, e.getMessage()));
            throw new IgniteException("Unable to collect partition level statistics", e);
        }
        Map<String, ColumnStatistics> colStats = Arrays.stream(collectors).collect(Collectors.toMap(csc -> csc.col().getName(), ColumnStatisticsCollector::finish));
        // Add existing to full replace existing statistics with new one.
        if (partStat != null) {
            for (Map.Entry<String, ColumnStatistics> oldColStat : partStat.columnsStatistics().entrySet()) {
                if (!colsToRemove.contains(oldColStat.getKey()))
                    colStats.putIfAbsent(oldColStat.getKey(), oldColStat.getValue());
            }
        }
        res = new ObjectPartitionStatisticsImpl(partId, getRowCount(colStats), locPart.updateCounter(), colStats);
    } finally {
        if (reserved)
            locPart.release();
    }
    statRepo.replaceLocalPartitionStatistics(gathCtx.configuration().key(), res);
    if (gathCtx.configuration().columns().size() == colsToCollect.size())
        statRepo.refreshObsolescence(gathCtx.configuration().key(), partId);
    return res;
}