Examples with RuntimeStatsSource org.apache.hadoop.hive.ql.plan.mapper.RuntimeStatsSource used on opensource projects

Example 1 with RuntimeStatsSource

use of org.apache.hadoop.hive.ql.plan.mapper.RuntimeStatsSource in project hive by apache.

the class StatsRulesProcFactory method applyRuntimeStats.

private static Statistics applyRuntimeStats(Context context, Statistics stats, Operator<?> op) {
    if (!context.getRuntimeStatsSource().isPresent()) {
        return stats;
    }
    RuntimeStatsSource rss = context.getRuntimeStatsSource().get();
    Optional<OperatorStats> os = rss.lookup(op);
    if (!os.isPresent()) {
        return stats;
    }
    LOG.debug("using runtime stats for {}; {}", op, os.get());
    Statistics outStats = stats.clone();
    outStats = outStats.scaleToRowCount(os.get().getOutputRecords(), false);
    outStats.setRuntimeStats(true);
    return outStats;
}