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Ingesting Database changes via Sqoop/Hudi

· One min read

Very simple in just 2 steps.

Step 1: Extract new changes to users table in MySQL, as avro data files on DFS

// Command to extract incrementals using sqoopbin/sqoop import \  -Dmapreduce.job.user.classpath.first=true \  --connect jdbc:mysql://localhost/users \  --username root \  --password ******* \  --table users \  --as-avrodatafile \  --target-dir \   s3:///tmp/sqoop/import-1/users

Step 2: Use your fav datasource to read extracted data and directly “upsert” the users table on DFS/Hive

// Spark Datasourceimport org.apache.hudi.DataSourceWriteOptions._// Use Spark datasource to read avroval inputDataset ="s3://tmp/sqoop/import-1/users/*");     // save it as a Hudi datasetinputDataset.write.format("org.apache.hudi”)  .option(HoodieWriteConfig.TABLE_NAME, "hoodie.users")  .option(RECORDKEY_FIELD_OPT_KEY(), "userID")  .option(PARTITIONPATH_FIELD_OPT_KEY(),"country")  .option(PRECOMBINE_FIELD_OPT_KEY(), "last_mod")  .option(OPERATION_OPT_KEY(), UPSERT_OPERATION_OPT_VAL())  .mode(SaveMode.Append)  .save("/path/on/dfs");

Alternatively, you can also use the Hudi DeltaStreamer tool with the DFSSource.