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Hudi connector #7

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Hudi connector #7

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@codope codope commented Dec 27, 2021

Class view in RFC.

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@vinothchandar vinothchandar left a comment

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The fast path and the core logic looks good to me. want to do an interactive session to go over any simplifications, understand some threading model/design better. Great job!

projection.get().stream()
.map(HiveColumnHandle.class::cast)
.collect(toUnmodifiableList()))
projection.get().stream()

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revert this and get rid of the whitespace changes?

</dependency>
<dependency>
<groupId>org.apache.hudi</groupId>
<artifactId>hudi-hive-sync</artifactId>

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We need hudi-hive-sync? for querying?

import io.trino.spi.connector.ConnectorFactory;

public class HudiPlugin
implements Plugin

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this wrapping. bit odd to me. but seems like the convention.

private HudiPageSourceBuilderFactory() {}

public static HudiPageSourceBuilder get(
HoodieFileFormat hudiFileFormat, HudiConfig hudiConfig, HdfsEnvironment hdfsEnvironment,

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rename hudiBaseFileFormat and lets use this terminology consistently everywhere? including HudiConfig

hudiConfig, hdfsEnvironment, stats, timeZone, context);
default:
throw new HoodieIOException(
String.format("File format %s is not supported yet", hudiFileFormat));

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Base file format ...

import static io.trino.plugin.hudi.HudiSessionProperties.getStandardSplitWeightSize;
import static io.trino.plugin.hudi.HudiSessionProperties.isSizeBasedSplitWeightsEnabled;

public class HudiSplitBackgroundLoader

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how much of this class is code reused from HiveSplitBackgroundLoader

</dependency>
<dependency>
<groupId>org.apache.hudi</groupId>
<artifactId>hudi-common</artifactId>

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can we do the same trimming around hbase/parquet-avro - we did for Presto, here as well?

private final ScheduledExecutorService splitLoaderExecutorService;
private final ScheduledFuture splitLoaderFuture;

public HudiSplitSource(

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whats the life cycle of this object? Once per query?

import static com.google.common.base.Preconditions.checkArgument;
import static java.util.Objects.requireNonNull;

public class HudiSplit

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Modelled after an existing HiveSplit?

ConnectorSplit connectorSplit,
ConnectorTableHandle connectorTable,
List<ColumnHandle> columns,
DynamicFilter dynamicFilter)

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Can you point me to where the file pruning happens i.e filtering out files that don't match the filter ?

@codope codope force-pushed the hudi-plugin-cleanup branch from e86685b to c988546 Compare January 27, 2022 13:27
Rebase and resolve conflicts

Use cached thread pool for split generation
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2 participants