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Collect file stats #14618
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88 changes: 88 additions & 0 deletions
88
presto-hive/src/main/java/com/facebook/presto/hive/HiveManifestUtils.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,88 @@ | ||
| /* | ||
| * 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 com.facebook.presto.hive; | ||
|
|
||
| import com.facebook.presto.common.Page; | ||
| import com.facebook.presto.common.PageBuilder; | ||
| import com.facebook.presto.common.block.BlockBuilder; | ||
| import com.facebook.presto.spi.PrestoException; | ||
| import com.google.common.collect.ImmutableList; | ||
|
|
||
| import java.util.Optional; | ||
|
|
||
| import static com.facebook.presto.common.type.BigintType.BIGINT; | ||
| import static com.facebook.presto.common.type.VarcharType.VARCHAR; | ||
| import static com.facebook.presto.hive.HiveErrorCode.MALFORMED_HIVE_FILE_STATISTICS; | ||
| import static com.facebook.presto.hive.PartitionUpdate.FileWriteInfo; | ||
| import static io.airlift.slice.Slices.utf8Slice; | ||
| import static java.lang.String.format; | ||
|
|
||
| public class HiveManifestUtils | ||
| { | ||
| private static final int FILE_SIZE_CHANNEL = 0; | ||
| private static final int ROW_COUNT_CHANNEL = 1; | ||
|
|
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| private HiveManifestUtils() | ||
| { | ||
| } | ||
|
|
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| public static Page createFileStatisticsPage(long fileSize, long rowCount) | ||
| { | ||
| // FileStatistics page layout: | ||
| // | ||
| // fileSize rowCount | ||
| // X X | ||
| PageBuilder statsPageBuilder = new PageBuilder(ImmutableList.of(BIGINT, BIGINT)); | ||
| statsPageBuilder.declarePosition(); | ||
| BIGINT.writeLong(statsPageBuilder.getBlockBuilder(FILE_SIZE_CHANNEL), fileSize); | ||
| BIGINT.writeLong(statsPageBuilder.getBlockBuilder(ROW_COUNT_CHANNEL), rowCount); | ||
|
|
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| return statsPageBuilder.build(); | ||
| } | ||
|
|
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| public static long getFileSize(Page statisticsPage, int position) | ||
| { | ||
| // FileStatistics page layout: | ||
| // | ||
| // fileSize rowCount | ||
| // X X | ||
|
|
||
| if (position < 0 || position >= statisticsPage.getPositionCount()) { | ||
| throw new PrestoException(MALFORMED_HIVE_FILE_STATISTICS, format("Invalid position: %d specified for FileStatistics page", position)); | ||
| } | ||
| return BIGINT.getLong(statisticsPage.getBlock(FILE_SIZE_CHANNEL), position); | ||
| } | ||
|
|
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| public static Optional<Page> createPartitionManifest(PartitionUpdate partitionUpdate) | ||
| { | ||
| // Manifest Page layout: | ||
| // fileName fileSize | ||
| // X X | ||
| // X X | ||
| // X X | ||
| // .... | ||
| PageBuilder manifestBuilder = new PageBuilder(ImmutableList.of(VARCHAR, BIGINT)); | ||
| BlockBuilder fileNameBuilder = manifestBuilder.getBlockBuilder(0); | ||
| BlockBuilder fileSizeBuilder = manifestBuilder.getBlockBuilder(1); | ||
| for (FileWriteInfo fileWriteInfo : partitionUpdate.getFileWriteInfos()) { | ||
| if (!fileWriteInfo.getFileSize().isPresent()) { | ||
| return Optional.empty(); | ||
| } | ||
| manifestBuilder.declarePosition(); | ||
| VARCHAR.writeSlice(fileNameBuilder, utf8Slice(fileWriteInfo.getWriteFileName())); | ||
| BIGINT.writeLong(fileSizeBuilder, fileWriteInfo.getFileSize().get()); | ||
| } | ||
| return Optional.of(manifestBuilder.build()); | ||
| } | ||
| } |
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35 changes: 35 additions & 0 deletions
35
presto-hive/src/main/java/com/facebook/presto/hive/HivePartitionStats.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| /* | ||
| * 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 com.facebook.presto.hive; | ||
|
|
||
| import com.facebook.airlift.stats.DistributionStat; | ||
| import org.weakref.jmx.Managed; | ||
| import org.weakref.jmx.Nested; | ||
|
|
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| public class HivePartitionStats | ||
| { | ||
| private final DistributionStat manifestSizeInBytes = new DistributionStat(); | ||
|
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| public void addManifestSizeInBytes(long bytes) | ||
| { | ||
| manifestSizeInBytes.add(bytes); | ||
| } | ||
|
|
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| @Managed | ||
| @Nested | ||
| public DistributionStat getManifestSizeInBytes() | ||
| { | ||
| return manifestSizeInBytes; | ||
| } | ||
| } |
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