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Ability to skip Incremental Index during query using query context #1957

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merged 1 commit into from Nov 24, 2015
Merged

Ability to skip Incremental Index during query using query context #1957

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8 changes: 8 additions & 0 deletions server/src/main/java/io/druid/segment/realtime/plumber/RealtimePlumber.java
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Expand Up @@ -49,6 +49,7 @@
import io.druid.data.input.Committer;
import io.druid.data.input.InputRow;
import io.druid.query.MetricsEmittingQueryRunner;
import io.druid.query.NoopQueryRunner;
import io.druid.query.Query;
import io.druid.query.QueryRunner;
import io.druid.query.QueryRunnerFactory;
Expand Down Expand Up @@ -132,6 +133,8 @@ public class RealtimePlumber implements Plumber

private static final String COMMIT_METADATA_KEY = "%commitMetadata%";
private static final String COMMIT_METADATA_TIMESTAMP_KEY = "%commitMetadataTimestamp%";
private static final String SKIP_INCREMENTAL_SEGMENT = "skipIncrementalSegment";


public RealtimePlumber(
DataSchema schema,
Expand Down Expand Up @@ -255,6 +258,7 @@ private Sink getSink(long timestamp)
@Override
public <T> QueryRunner<T> getQueryRunner(final Query<T> query)
{
final boolean skipIncrementalSegment = query.getContextValue(SKIP_INCREMENTAL_SEGMENT, false);
final QueryRunnerFactory<T, Query<T>> factory = conglomerate.findFactory(query);
final QueryToolChest<T, Query<T>> toolchest = factory.getToolchest();

Expand Down Expand Up @@ -322,6 +326,10 @@ public QueryRunner<T> apply(FireHydrant input)
return new ReportTimelineMissingSegmentQueryRunner<T>(descriptor);
}

if (skipIncrementalSegment && !input.hasSwapped()) {
return new NoopQueryRunner<T>();
}

// Prevent the underlying segment from closing when its being iterated
final Closeable closeable = input.getSegment().increment();
try {
Expand Down