Package org.apache.phoenix.iterate.ParallelIterators

Examples of org.apache.phoenix.iterate.ParallelIterators.ParallelIteratorFactory

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    }

    private static ParallelIteratorFactory buildResultIteratorFactory(StatementContext context,
            TableRef table, OrderBy orderBy) {

        ParallelIteratorFactory spoolingResultIteratorFactory =
                new SpoolingResultIterator.SpoolingResultIteratorFactory(
                        context.getConnection().getQueryServices());

        // If we're doing an order by then we need the full result before we can do anything,
        // so we don't bother chunking it. If we're just doing a simple scan then we chunk
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            return outerFactory.newIterator(context, iterator, scan);
        }
    }

    private ParallelIteratorFactory wrapParallelIteratorFactory () {
        ParallelIteratorFactory innerFactory;
        QueryServices services = context.getConnection().getQueryServices();
        if (groupBy.isEmpty() || groupBy.isOrderPreserving()) {
            innerFactory = new SpoolingResultIterator.SpoolingResultIteratorFactory(services);
        } else {
            innerFactory = new OrderingResultIteratorFactory(services);
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                limit = Math.min(limit, maxRows);
            } else {
                limit = maxRows;
            }
        }
        ParallelIteratorFactory parallelIteratorFactory = asSubquery ? null : this.parallelIteratorFactory;
        if (select.isAggregate() || select.isDistinct()) {
            return new AggregatePlan(context, select, tableRef, projector, limit, orderBy, parallelIteratorFactory, groupBy, having);
        } else {
            return new ScanPlan(context, select, tableRef, projector, limit, orderBy, parallelIteratorFactory, allowPageFilter);
        }
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            return outerFactory.newIterator(iterator);
        }
    }

    private ParallelIteratorFactory wrapParallelIteratorFactory () {
        ParallelIteratorFactory innerFactory;
        QueryServices services = context.getConnection().getQueryServices();
        if (groupBy.isEmpty() || groupBy.isOrderPreserving()) {
            innerFactory = new SpoolingResultIterator.SpoolingResultIteratorFactory(services);
        } else {
            innerFactory = new OrderingResultIteratorFactory(services);
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             * 5) no limit clause
             * Otherwise, run the query to pull the data from the server
             * and populate the MutationState (upto a limit).
            */           
            runOnServer = sameTable && isAutoCommit && !table.isImmutableRows() && !select.isAggregate() && !select.isDistinct() && select.getLimit() == null && table.getBucketNum() == null;
            ParallelIteratorFactory parallelIteratorFactory;
            // TODO: once MutationState is thread safe, then when auto commit is off, we can still run in parallel
            if (select.isAggregate() || select.isDistinct() || select.getLimit() != null) {
                parallelIteratorFactory = null;
            } else {
                // We can pipeline the upsert select instead of spooling everything to disk first,
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             * 5) no limit clause
             * Otherwise, run the query to pull the data from the server
             * and populate the MutationState (upto a limit).
            */           
            runOnServer = sameTable && isAutoCommit && !table.isImmutableRows() && !select.isAggregate() && !select.isDistinct() && select.getLimit() == null && table.getBucketNum() == null;
            ParallelIteratorFactory parallelIteratorFactory;
            if (select.isAggregate() || select.isDistinct() || select.getLimit() != null) {
                parallelIteratorFactory = null;
            } else {
                // We can pipeline the upsert select instead of spooling everything to disk first,
                // if we don't have any post processing that's required.
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                limit = Math.min(limit, maxRows);
            } else {
                limit = maxRows;
            }
        }
        ParallelIteratorFactory parallelIteratorFactory = asSubquery ? null : this.parallelIteratorFactory;
        if (select.isAggregate() || select.isDistinct()) {
            return new AggregatePlan(context, select, tableRef, projector, limit, orderBy, parallelIteratorFactory, groupBy, having);
        } else {
            return new ScanPlan(context, select, tableRef, projector, limit, orderBy, parallelIteratorFactory, allowPageFilter);
        }
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    }

    private static ParallelIteratorFactory buildResultIteratorFactory(StatementContext context,
            TableRef table, OrderBy orderBy) {

        ParallelIteratorFactory spoolingResultIteratorFactory =
                new SpoolingResultIterator.SpoolingResultIteratorFactory(
                        context.getConnection().getQueryServices());

        // If we're doing an order by then we need the full result before we can do anything,
        // so we don't bother chunking it. If we're just doing a simple scan then we chunk
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            return outerFactory.newIterator(context, iterator, scan);
        }
    }

    private ParallelIteratorFactory wrapParallelIteratorFactory () {
        ParallelIteratorFactory innerFactory;
        QueryServices services = context.getConnection().getQueryServices();
        if (groupBy.isEmpty() || groupBy.isOrderPreserving()) {
            innerFactory = new SpoolingResultIterator.SpoolingResultIteratorFactory(services);
        } else {
            innerFactory = new OrderingResultIteratorFactory(services);
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            return outerFactory.newIterator(context, iterator);
        }
    }

    private ParallelIteratorFactory wrapParallelIteratorFactory () {
        ParallelIteratorFactory innerFactory;
        QueryServices services = context.getConnection().getQueryServices();
        if (groupBy.isEmpty() || groupBy.isOrderPreserving()) {
            innerFactory = new SpoolingResultIterator.SpoolingResultIteratorFactory(services);
        } else {
            innerFactory = new OrderingResultIteratorFactory(services);
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Related Classes of org.apache.phoenix.iterate.ParallelIterators.ParallelIteratorFactory

  • org.apache.phoenix.compile.QueryCompiler
  • org.apache.phoenix.compile.UpsertCompiler
  • org.apache.phoenix.execute.AggregatePlan
  • org.apache.phoenix.execute.ScanPlan
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