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Ability to skip Incremental Index during query using query context 

This PR adds adds the ability to skip incremental index when querying
results from realtime nodes. default behaviour is to include
incrementalIndex in queries.

review comment
This commit is contained in:
Nishant 2015-11-11 17:37:11 -08:00
parent 0fb7e4e040
commit 60f649dab1
1 changed files with 8 additions and 0 deletions
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8
server/src/main/java/io/druid/segment/realtime/plumber/RealtimePlumber.java
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@ -49,6 +49,7 @@ import io.druid.concurrent.Execs;
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;
@ -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,
@ -255,6 +258,7 @@ public class RealtimePlumber implements Plumber
@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();
@ -322,6 +326,10 @@ public class RealtimePlumber implements Plumber
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 {