Yes, It makes sense to add validations with descriptive messages. Please open a ticket and send a PR for this. Thanks,Balaji.V On Monday, September 16, 2019, 01:11:12 AM PDT, Pratyaksh Sharma <[email protected]> wrote: Hi Balaji,
I get your point. However I feel in such cases, instead of throwing a Null Pointer, we should handle the case gracefully. The exception should be thrown with proper user-facing message. Please let me know your thoughts on this. On Fri, Sep 13, 2019 at 7:26 PM Balaji Varadarajan <[email protected]> wrote: > Hi Pratyaksh, > This is expected. You need to pass a schema-provider since you are using > Avro Sources.For RowBased sources, DeltaStreamer can deduce schema from Row > type information available from Spark Dataset. > Balaji.V > On Friday, September 13, 2019, 02:57:37 AM PDT, Pratyaksh Sharma < > [email protected]> wrote: > > Hi, > > I am trying to build a CDC pipeline using Hudi working on tag hoodie-0.4.7. > Here is the command I used for running DeltaStreamer - > > spark-submit --files jaas.conf --conf > 'spark.driver.extraJavaOptions=-Djava.security.auth.login.config=jaas.conf' > --conf > > 'spark.executor.extraJavaOptions=-Djava.security.auth.login.config=jaas.conf' > --master yarn --deploy-mode cluster --num-executors 2 --class > com.uber.hoodie.utilities.deltastreamer.HoodieDeltaStreamer > /path/to/hoodie-utilities-0.4.7.jar --storage-type COPY_ON_WRITE > --source-class com.uber.hoodie.utilities.sources.AvroKafkaSource > --source-ordering-field xxxx --target-base-path hdfs://path/to/cow_table > --target-table cow_table --props hdfs://path/to/fg-kafka-source.properties > --transformer-class com.uber.hoodie.utilities.transform.DebeziumTransformer > --spark-master yarn-cluster --source-limit 5000 > > Basically I have not passed any SchemaProvider class in the command. When I > run the above command, I get the below exception in SourceFormatAdapter and > the job gets killed - > > java.lang.NullPointerException > at > > com.uber.hoodie.utilities.deltastreamer.SourceFormatAdapter.fetchNewDataInRowFormat(SourceFormatAdapter.java:94) > at > > com.uber.hoodie.utilities.deltastreamer.HoodieDeltaStreamer.sync(HoodieDeltaStreamer.java:224) > at > > com.uber.hoodie.utilities.deltastreamer.HoodieDeltaStreamer.main(HoodieDeltaStreamer.java:504) > > In HoodieDeltaStreamer class, we try to initiate RowBasedSchemaProvider > before registering Avro Schemas if the schemaProvider variable is null. > Hence I am trying to understand if the above exception is expected > behaviour. > > Please help. >
