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Add Hudi MOR snapshot query and metadata table support #25599
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139 changes: 139 additions & 0 deletions
139
plugin/trino-hudi/src/main/java/io/trino/plugin/hudi/HudiPageSource.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,139 @@ | ||
| /* | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package io.trino.plugin.hudi; | ||
|
|
||
| import io.trino.plugin.hive.HiveColumnHandle; | ||
| import io.trino.plugin.hudi.util.HudiAvroSerializer; | ||
| import io.trino.plugin.hudi.util.SynthesizedColumnHandler; | ||
| import io.trino.spi.Page; | ||
| import io.trino.spi.PageBuilder; | ||
| import io.trino.spi.connector.ConnectorPageSource; | ||
| import io.trino.spi.connector.SourcePage; | ||
| import io.trino.spi.metrics.Metrics; | ||
| import org.apache.avro.generic.IndexedRecord; | ||
| import org.apache.hudi.common.table.read.HoodieFileGroupReader; | ||
|
|
||
| import java.io.IOException; | ||
| import java.util.List; | ||
| import java.util.OptionalLong; | ||
| import java.util.concurrent.CompletableFuture; | ||
|
|
||
| import static com.google.common.base.Preconditions.checkState; | ||
| import static com.google.common.collect.ImmutableList.toImmutableList; | ||
| import static java.util.Objects.requireNonNull; | ||
|
|
||
| public class HudiPageSource | ||
| implements ConnectorPageSource | ||
| { | ||
| private final HoodieFileGroupReader<IndexedRecord> fileGroupReader; | ||
| private final ConnectorPageSource pageSource; | ||
| private final PageBuilder pageBuilder; | ||
| private final HudiAvroSerializer avroSerializer; | ||
|
|
||
| public HudiPageSource( | ||
| ConnectorPageSource pageSource, | ||
| HoodieFileGroupReader<IndexedRecord> fileGroupReader, | ||
| List<HiveColumnHandle> columnHandles, | ||
| SynthesizedColumnHandler synthesizedColumnHandler) | ||
| { | ||
| this.pageSource = requireNonNull(pageSource, "pageSource is null"); | ||
| this.fileGroupReader = requireNonNull(fileGroupReader, "fileGroupReader is null"); | ||
| this.initFileGroupReader(); | ||
| this.pageBuilder = new PageBuilder(columnHandles.stream().map(HiveColumnHandle::getType).collect(toImmutableList())); | ||
| this.avroSerializer = new HudiAvroSerializer(columnHandles, synthesizedColumnHandler); | ||
| } | ||
|
|
||
| @Override | ||
| public long getCompletedBytes() | ||
| { | ||
| return pageSource.getCompletedBytes(); | ||
| } | ||
|
|
||
| @Override | ||
| public OptionalLong getCompletedPositions() | ||
| { | ||
| return pageSource.getCompletedPositions(); | ||
| } | ||
|
|
||
| @Override | ||
| public long getReadTimeNanos() | ||
| { | ||
| return pageSource.getReadTimeNanos(); | ||
| } | ||
|
|
||
| @Override | ||
| public boolean isFinished() | ||
| { | ||
| try { | ||
| return !fileGroupReader.hasNext(); | ||
| } | ||
| catch (IOException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public SourcePage getNextSourcePage() | ||
| { | ||
| checkState(pageBuilder.isEmpty(), "PageBuilder is not empty at the beginning of a new page"); | ||
| try { | ||
| while (fileGroupReader.hasNext()) { | ||
| avroSerializer.buildRecordInPage(pageBuilder, fileGroupReader.next()); | ||
| } | ||
| } | ||
| catch (IOException e) { | ||
| throw new RuntimeException(e); | ||
| } | ||
|
|
||
| Page newPage = pageBuilder.build(); | ||
| pageBuilder.reset(); | ||
| return SourcePage.create(newPage); | ||
| } | ||
|
|
||
| @Override | ||
| public long getMemoryUsage() | ||
| { | ||
| return pageSource.getMemoryUsage(); | ||
| } | ||
|
|
||
| @Override | ||
| public void close() | ||
| throws IOException | ||
| { | ||
| fileGroupReader.close(); | ||
| pageSource.close(); | ||
| } | ||
|
|
||
| @Override | ||
| public CompletableFuture<?> isBlocked() | ||
| { | ||
| return pageSource.isBlocked(); | ||
| } | ||
|
|
||
| @Override | ||
| public Metrics getMetrics() | ||
| { | ||
| return pageSource.getMetrics(); | ||
| } | ||
|
|
||
| protected void initFileGroupReader() | ||
| { | ||
| try { | ||
| this.fileGroupReader.initRecordIterators(); | ||
| } | ||
| catch (IOException e) { | ||
| throw new RuntimeException("Failed to initialize file group reader!", e); | ||
| } | ||
| } | ||
| } |
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