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Merge pull request LinkedInAttic#15 from smeder/camus-kafka-0.8
Add support for other serialization formats. You'll have to implement th...
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20 changes: 20 additions & 0 deletions
20
camus-api/src/main/java/com/linkedin/camus/etl/RecordWriterProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| package com.linkedin.camus.etl; | ||
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| import com.linkedin.camus.coders.CamusWrapper; | ||
| import java.io.IOException; | ||
| import org.apache.hadoop.mapreduce.RecordWriter; | ||
| import org.apache.hadoop.mapreduce.TaskAttemptContext; | ||
| import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter; | ||
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| /** | ||
| * | ||
| * | ||
| */ | ||
| public interface RecordWriterProvider { | ||
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| String getFilenameExtension(); | ||
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| RecordWriter<IEtlKey, CamusWrapper> getDataRecordWriter( | ||
| TaskAttemptContext context, String fileName, CamusWrapper data, FileOutputCommitter committer) throws IOException, | ||
| InterruptedException; | ||
| } |
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67 changes: 67 additions & 0 deletions
67
...etl-kafka/src/main/java/com/linkedin/camus/etl/kafka/common/AvroRecordWriterProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| package com.linkedin.camus.etl.kafka.common; | ||
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| import com.linkedin.camus.coders.CamusWrapper; | ||
| import com.linkedin.camus.etl.IEtlKey; | ||
| import com.linkedin.camus.etl.RecordWriterProvider; | ||
| import com.linkedin.camus.etl.kafka.mapred.EtlMultiOutputFormat; | ||
| import java.io.IOException; | ||
| import org.apache.avro.file.CodecFactory; | ||
| import org.apache.avro.file.DataFileWriter; | ||
| import org.apache.avro.generic.GenericRecord; | ||
| import org.apache.avro.specific.SpecificDatumWriter; | ||
| import org.apache.hadoop.fs.Path; | ||
| import org.apache.hadoop.mapreduce.RecordWriter; | ||
| import org.apache.hadoop.mapreduce.TaskAttemptContext; | ||
| import org.apache.hadoop.mapreduce.lib.output.FileOutputCommitter; | ||
| import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat; | ||
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| /** | ||
| * | ||
| * | ||
| */ | ||
| public class AvroRecordWriterProvider implements RecordWriterProvider { | ||
| public final static String EXT = ".avro"; | ||
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| @Override | ||
| public String getFilenameExtension() { | ||
| return EXT; | ||
| } | ||
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| @Override | ||
| public RecordWriter<IEtlKey, CamusWrapper> getDataRecordWriter( | ||
| TaskAttemptContext context, | ||
| String fileName, | ||
| CamusWrapper data, | ||
| FileOutputCommitter committer) throws IOException, InterruptedException { | ||
| final DataFileWriter<Object> writer = new DataFileWriter<Object>( | ||
| new SpecificDatumWriter<Object>()); | ||
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| if (FileOutputFormat.getCompressOutput(context)) { | ||
| if ("snappy".equals(EtlMultiOutputFormat.getEtlOutputCodec(context))) { | ||
| writer.setCodec(CodecFactory.snappyCodec()); | ||
| } else { | ||
| int level = EtlMultiOutputFormat.getEtlDeflateLevel(context); | ||
| writer.setCodec(CodecFactory.deflateCodec(level)); | ||
| } | ||
| } | ||
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| Path path = committer.getWorkPath(); | ||
| path = new Path(path, EtlMultiOutputFormat.getUniqueFile(context, fileName, EXT)); | ||
| writer.create(((GenericRecord) data.getRecord()).getSchema(), | ||
| path.getFileSystem(context.getConfiguration()).create(path)); | ||
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| writer.setSyncInterval(EtlMultiOutputFormat.getEtlAvroWriterSyncInterval(context)); | ||
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| return new RecordWriter<IEtlKey, CamusWrapper>() { | ||
| @Override | ||
| public void write(IEtlKey ignore, CamusWrapper data) throws IOException { | ||
| writer.append(data.getRecord()); | ||
| } | ||
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| @Override | ||
| public void close(TaskAttemptContext arg0) throws IOException, InterruptedException { | ||
| writer.close(); | ||
| } | ||
| }; | ||
| } | ||
| } |
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