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Add chunk offset to file id key to make each chunk have a unique key.…
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… Also add sdk version to Parquet metadata.
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sfc-gh-psaha committed Sep 16, 2024
1 parent 3cf3eb5 commit 6a46ded
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Showing 6 changed files with 29 additions and 10 deletions.
Original file line number Diff line number Diff line change
Expand Up @@ -84,7 +84,7 @@ static <T> Blob constructBlobAndMetadata(

Flusher<T> flusher = channelsDataPerTable.get(0).createFlusher();
Flusher.SerializationResult serializedChunk =
flusher.serialize(channelsDataPerTable, filePath);
flusher.serialize(channelsDataPerTable, filePath, curDataSize);

if (!serializedChunk.channelsMetadataList.isEmpty()) {
final byte[] compressedChunkData;
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Expand Up @@ -20,12 +20,15 @@ public interface Flusher<T> {
/**
* Serialize buffered rows into the underlying format.
*
* @param channelsDataPerTable buffered rows
* @param filePath file path
* @param fullyQualifiedTableName
* @param channelsDataPerTable buffered rows
* @param filePath file path
* @param chunkStartOffset
* @return {@link SerializationResult}
* @throws IOException
*/
SerializationResult serialize(List<ChannelData<T>> channelsDataPerTable, String filePath)
SerializationResult serialize(
List<ChannelData<T>> channelsDataPerTable, String filePath, long chunkStartOffset)
throws IOException;

/** Holds result of the buffered rows conversion: channel metadata and stats. */
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Expand Up @@ -41,13 +41,13 @@ public ParquetFlusher(

@Override
public SerializationResult serialize(
List<ChannelData<ParquetChunkData>> channelsDataPerTable, String filePath)
List<ChannelData<ParquetChunkData>> channelsDataPerTable, String filePath, long chunkStartOffset)
throws IOException {
return serializeFromJavaObjects(channelsDataPerTable, filePath);
return serializeFromJavaObjects(channelsDataPerTable, filePath, chunkStartOffset);
}

private SerializationResult serializeFromJavaObjects(
List<ChannelData<ParquetChunkData>> channelsDataPerTable, String filePath)
List<ChannelData<ParquetChunkData>> channelsDataPerTable, String filePath, long chunkStartOffset)
throws IOException {
List<ChannelMetadata> channelsMetadataList = new ArrayList<>();
long rowCount = 0L;
Expand Down Expand Up @@ -116,7 +116,14 @@ private SerializationResult serializeFromJavaObjects(
// We insert the filename in the file itself as metadata so that streams can work on replicated
// mixed tables. For a more detailed discussion on the topic see SNOW-561447 and
// http://go/streams-on-replicated-mixed-tables
metadata.put(Constants.PRIMARY_FILE_ID_KEY, StreamingIngestUtils.getShortname(filePath));
// Using chunk offset as suffix ensures that for interleaved tables, the file
// id key is unique for each chunk. Each chunk is logically a separate Parquet file that happens
// to be bundled together.
String shortName = StreamingIngestUtils.getShortname(filePath);
final String[] parts = shortName.split("\\.");
metadata.put(
Constants.PRIMARY_FILE_ID_KEY,
String.format("%s%s.%s", parts[0], chunkStartOffset, parts[1]));
parquetWriter =
new BdecParquetWriter(
mergedData,
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Expand Up @@ -17,9 +17,11 @@
import java.util.Set;
import java.util.function.Consumer;
import net.snowflake.client.jdbc.internal.google.common.collect.Sets;
import net.snowflake.ingest.connection.RequestBuilder;
import net.snowflake.ingest.connection.TelemetryService;
import net.snowflake.ingest.streaming.OffsetTokenVerificationFunction;
import net.snowflake.ingest.streaming.OpenChannelRequest;
import net.snowflake.ingest.utils.Constants;
import net.snowflake.ingest.utils.ErrorCode;
import net.snowflake.ingest.utils.SFException;
import org.apache.parquet.schema.MessageType;
Expand Down Expand Up @@ -74,6 +76,7 @@ public void setupSchema(List<ColumnMetadata> columns) {
fieldIndex.clear();
metadata.clear();
metadata.put("sfVer", "1,1");
metadata.put(Constants.SDK_VERSION_KEY, RequestBuilder.DEFAULT_VERSION);
List<Type> parquetTypes = new ArrayList<>();
int id = 1;
for (ColumnMetadata column : columns) {
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1 change: 1 addition & 0 deletions src/main/java/net/snowflake/ingest/utils/Constants.java
Original file line number Diff line number Diff line change
Expand Up @@ -35,6 +35,7 @@ public class Constants {
public static final String SNOWFLAKE_OAUTH_TOKEN_ENDPOINT = "/oauth/token-request";
public static final String PRIMARY_FILE_ID_KEY =
"primaryFileId"; // Don't change, should match Parquet Scanner
public static final String SDK_VERSION_KEY = "sdkVersion";
public static final long RESPONSE_SUCCESS = 0L; // Don't change, should match server side
public static final long RESPONSE_ERR_GENERAL_EXCEPTION_RETRY_REQUEST =
10L; // Don't change, should match server side
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Expand Up @@ -19,6 +19,8 @@
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.atomic.AtomicReference;

import net.snowflake.ingest.connection.RequestBuilder;
import net.snowflake.ingest.streaming.InsertValidationResponse;
import net.snowflake.ingest.streaming.OpenChannelRequest;
import net.snowflake.ingest.utils.Constants;
Expand Down Expand Up @@ -1789,10 +1791,13 @@ public void testParquetFileNameMetadata() throws IOException {

ParquetFlusher flusher = (ParquetFlusher) bufferUnderTest.createFlusher();
Flusher.SerializationResult result =
flusher.serialize(Collections.singletonList(data), filePath);
flusher.serialize(Collections.singletonList(data), filePath, 13);

BdecParquetReader reader = new BdecParquetReader(result.chunkData.toByteArray());
Assert.assertEquals(filePath, reader.getKeyValueMetadata().get(Constants.PRIMARY_FILE_ID_KEY));
Assert.assertEquals(
"testParquetFileNameMetadata13.bdec",
reader.getKeyValueMetadata().get(Constants.PRIMARY_FILE_ID_KEY));
Assert.assertEquals(RequestBuilder.DEFAULT_VERSION, reader.getKeyValueMetadata().get(Constants.SDK_VERSION_KEY));
}

private static Thread getThreadThatWaitsForLockReleaseAndFlushes(
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