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[Issue #4]: support lambda worker outputs collection. #27

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merged 1 commit into from
Jun 29, 2022
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[Issue #4]: support lambda worker outputs collection. #27

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17 changes: 17 additions & 0 deletions connector/src/main/java/io/pixelsdb/pixels/trino/PixelsSplitManager.java
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@
package io.pixelsdb.pixels.trino;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.serializer.SerializerFeature;
import com.google.common.collect.ImmutableList;
import io.airlift.log.Logger;
import io.airlift.slice.Slice;
Expand Down Expand Up @@ -159,6 +160,22 @@ else if (tableHandle.getTableType() == PixelsTableHandle.TableType.JOINED)
logger.info("join operator: " + JSON.toJSONString(joinOperator));
joinOperator.executePrev();

Thread outputCollector = new Thread(() -> {
try
{
JoinOperator.OutputCollection outputCollection = joinOperator.collectOutputs();
SerializerFeature[] features = new SerializerFeature[]{SerializerFeature.WriteClassName};
String json = JSON.toJSONString(outputCollection, features);
logger.info("join outputs: " + json);
} catch (Exception e)
{
logger.error(e, "failed to execute the join plan using pixels-lambda");
throw new TrinoException(PixelsErrorCode.PIXELS_SQL_EXECUTE_ERROR,
"failed to execute the join plan using pixels-lambda");
}
});
outputCollector.start();

// Build the splits of the join result.
ImmutableList.Builder<PixelsSplit> splitsBuilder = ImmutableList.builder();
/*
Expand Down