Hi Aakash, For the field to behave as a nullable extra field, you need to add default value as null to the schema and make "null" as the first type in your union schema for `_hoodie_is_soft_deleted`.Hope that helps.
On Fri, Jul 15, 2022 at 8:01 PM aakash aakash <email2aak...@gmail.com> wrote: > Thanks for the response Pratyaksh! > > We add this column to the Spark dataframe before calling the hudi upsert > and delete. And this should work like an extra nullable column in the > schema but it's not behaving like that, so wondering if we remove any > column with the prefix *'_hoodie' * in Hudi code. We wanted to this to be > part of the platform so every team does not have to add an extra field in > their prod schema since it is not supposed to be visible to everyone. > > > Here is an excerpt of the code : > > object SoftDeleteColInfo { > val softDeleteHudiMetaCol = "_hoodie_is_soft_deleted" > val softDeleteStrVal = "true" > > val softDeletedUDF = udf(softDeleted) > > def softDeleted() = (arg: String) => arg > } > > sparkSession.udf.register("softDeletedUDF", > SoftDeleteColInfo.softDeletedUDF) > > *df.withColumn(softDeleteHudiMetaCol, functions.callUDF("softDeletedUDF", > lit("true")))* > and the excerpt of the schema of dataframe before calling hudi operation : > }, { > "name" : "end_time_utc", > "type" : [ { > "type" : "long", > "logicalType" : "timestamp-micros" > }, "null" ] > }, { > "name" : "date_created_utc", > "type" : [ { > "type" : "long", > "logicalType" : "timestamp-micros" > }, "null" ] > }, { > "name" : "date_updated_utc", > "type" : [ { > "type" : "long", > "logicalType" : "timestamp-micros" > }, "null" ] > }, { > "name" : "*_hoodie_is_soft_deleted*", > "type" : [ "string", "null" ] > } ] > } > > On Fri, Jul 15, 2022 at 12:03 AM Pratyaksh Sharma <pratyaks...@gmail.com> > wrote: > > > Hi, > > > > Hudi is complaining because '_hoodie_is_soft_deleted' is present in the > > parquet file's schema but is not present in your incoming schema. > > > > From my experience, I would say it is a standard practice to add an extra > > field which acts as a marker for soft deletion and needs to be persisted > > with every record. So I would suggest adding an extra field in the schema > > and solve your use case. > > > > @Sivabalan <n.siv...@gmail.com> can probably add more here. > > > > On Fri, Jul 15, 2022 at 11:21 AM aakash aakash <email2aak...@gmail.com> > > wrote: > > > > > Hi, > > > > > > We have a use case to perform soft delete over some record keys where > we > > > nullify non-key fields and ignore any update for this record later on. > > We > > > thought of using a hudi meta field: "_hoodie_is_soft_deleted" as hudi > > hard > > > delete (_hoodie_is_deleted) does to make it simple to identify if the > > > platform perform any soft delete but I am getting avro field not found > > > exception when we perform another soft delete on the same index, please > > let > > > me know if you have any advise how to fix it or if this is a wrong > > > approach, we wanted to avoid adding any extra field in the customer > > schema > > > and behind the scene filter the soft delete record as done for hard > > delete > > > but still keep the record in the system. > > > > > > > > > Hudi : 0.8.0 > > > Exception stacktrace: > > > > > > 2/07/14 22:08:21 WARN TaskSetManager: Lost task 5.0 in stage 93.0 (TID > > > 33283, 172.25.31.77, executor 3): > > > org.apache.hudi.exception.HoodieUpsertException: Error upserting > > bucketType > > > UPDATE for partition :5 > > > at > > > > > > > > > org.apache.hudi.table.action.commit.BaseSparkCommitActionExecutor.handleUpsertPartition(BaseSparkCommitActionExecutor.java:288) > > > at > > > > > > > > > org.apache.hudi.table.action.commit.BaseSparkCommitActionExecutor.lambda$execute$ecf5068c$1(BaseSparkCommitActionExecutor.java:139) > > > at > > > > > > > > > org.apache.spark.api.java.JavaRDDLike$$anonfun$mapPartitionsWithIndex$1.apply(JavaRDDLike.scala:102) > > > at > > > > > > > > > org.apache.spark.api.java.JavaRDDLike$$anonfun$mapPartitionsWithIndex$1.apply(JavaRDDLike.scala:102) > > > at > > > > > > > > > org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$25.apply(RDD.scala:853) > > > at > > > > > > > > > org.apache.spark.rdd.RDD$$anonfun$mapPartitionsWithIndex$1$$anonfun$apply$25.apply(RDD.scala:853) > > > at > > > > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) > > > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) > > > at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) > > > at > > > > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) > > > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) > > > at org.apache.spark.rdd.RDD$$anonfun$7.apply(RDD.scala:337) > > > at org.apache.spark.rdd.RDD$$anonfun$7.apply(RDD.scala:335) > > > at > > > > > > > > > org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1182) > > > at > > > > > > > > > org.apache.spark.storage.BlockManager$$anonfun$doPutIterator$1.apply(BlockManager.scala:1156) > > > at > org.apache.spark.storage.BlockManager.doPut(BlockManager.scala:1091) > > > at > > > > > > > > > org.apache.spark.storage.BlockManager.doPutIterator(BlockManager.scala:1156) > > > at > > > > > > > > > org.apache.spark.storage.BlockManager.getOrElseUpdate(BlockManager.scala:882) > > > at org.apache.spark.rdd.RDD.getOrCompute(RDD.scala:335) > > > at org.apache.spark.rdd.RDD.iterator(RDD.scala:286) > > > at > > > > org.apache.spark.rdd.MapPartitionsRDD.compute(MapPartitionsRDD.scala:52) > > > at org.apache.spark.rdd.RDD.computeOrReadCheckpoint(RDD.scala:324) > > > at org.apache.spark.rdd.RDD.iterator(RDD.scala:288) > > > at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:90) > > > at org.apache.spark.scheduler.Task.run(Task.scala:123) > > > at > > > > > > > > > org.apache.spark.executor.Executor$TaskRunner$$anonfun$10.apply(Executor.scala:408) > > > at org.apache.spark.util.Utils$.tryWithSafeFinally(Utils.scala:1360) > > > at > > org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:414) > > > at > > > > > > > > > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) > > > at > > > > > > > > > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) > > > at java.lang.Thread.run(Thread.java:748) > > > Caused by: org.apache.hudi.exception.HoodieException: > > > org.apache.hudi.exception.HoodieException: > > > java.util.concurrent.ExecutionException: > > > org.apache.hudi.exception.HoodieException: operation has failed > > > at > > > > > > > > > org.apache.hudi.table.action.commit.SparkMergeHelper.runMerge(SparkMergeHelper.java:102) > > > at > > > > > > > > > org.apache.hudi.table.action.commit.BaseSparkCommitActionExecutor.handleUpdateInternal(BaseSparkCommitActionExecutor.java:317) > > > at > > > > > > > > > org.apache.hudi.table.action.commit.BaseSparkCommitActionExecutor.handleUpdate(BaseSparkCommitActionExecutor.java:308) > > > at > > > > > > > > > org.apache.hudi.table.action.commit.BaseSparkCommitActionExecutor.handleUpsertPartition(BaseSparkCommitActionExecutor.java:281) > > > ... 30 more > > > Caused by: org.apache.hudi.exception.HoodieException: > > > java.util.concurrent.ExecutionException: > > > org.apache.hudi.exception.HoodieException: operation has failed > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryExecutor.execute(BoundedInMemoryExecutor.java:143) > > > at > > > > > > > > > org.apache.hudi.table.action.commit.SparkMergeHelper.runMerge(SparkMergeHelper.java:100) > > > ... 33 more > > > Caused by: java.util.concurrent.ExecutionException: > > > org.apache.hudi.exception.HoodieException: operation has failed > > > at java.util.concurrent.FutureTask.report(FutureTask.java:122) > > > at java.util.concurrent.FutureTask.get(FutureTask.java:192) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryExecutor.execute(BoundedInMemoryExecutor.java:141) > > > ... 34 more > > > Caused by: org.apache.hudi.exception.HoodieException: operation has > > failed > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryQueue.throwExceptionIfFailed(BoundedInMemoryQueue.java:247) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryQueue.readNextRecord(BoundedInMemoryQueue.java:226) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryQueue.access$100(BoundedInMemoryQueue.java:52) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryQueue$QueueIterator.hasNext(BoundedInMemoryQueue.java:277) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryQueueConsumer.consume(BoundedInMemoryQueueConsumer.java:36) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryExecutor.lambda$null$2(BoundedInMemoryExecutor.java:121) > > > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > > > ... 3 more > > > Caused by: org.apache.parquet.io.InvalidRecordException: Parquet/Avro > > > schema mismatch: Avro field '_hoodie_is_soft_deleted' not found > > > at > > > > > > > > > org.apache.parquet.avro.AvroRecordConverter.getAvroField(AvroRecordConverter.java:225) > > > at > > > > > > > > > org.apache.parquet.avro.AvroRecordConverter.<init>(AvroRecordConverter.java:130) > > > at > > > > > > > > > org.apache.parquet.avro.AvroRecordConverter.<init>(AvroRecordConverter.java:95) > > > at > > > > > > > > > org.apache.parquet.avro.AvroRecordMaterializer.<init>(AvroRecordMaterializer.java:33) > > > at > > > > > > > > > org.apache.parquet.avro.AvroReadSupport.prepareForRead(AvroReadSupport.java:138) > > > at > > > > > > > > > org.apache.parquet.hadoop.InternalParquetRecordReader.initialize(InternalParquetRecordReader.java:183) > > > at > > > > > > org.apache.parquet.hadoop.ParquetReader.initReader(ParquetReader.java:156) > > > at > org.apache.parquet.hadoop.ParquetReader.read(ParquetReader.java:135) > > > at > > > > > > > > > org.apache.hudi.common.util.ParquetReaderIterator.hasNext(ParquetReaderIterator.java:49) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.IteratorBasedQueueProducer.produce(IteratorBasedQueueProducer.java:45) > > > at > > > > > > > > > org.apache.hudi.common.util.queue.BoundedInMemoryExecutor.lambda$null$0(BoundedInMemoryExecutor.java:92) > > > at java.util.concurrent.FutureTask.run(FutureTask.java:266) > > > at > > > java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) > > > ... 4 more > > > > > > > > > > > > > > > > > > > > > > > > How we add this column to the Spark dataframe : > > > > > > object SoftDeleteColInfo { > > > val softDeleteHudiMetaCol = "_hoodie_is_soft_deleted" > > > val softDeleteStrVal = "true" > > > > > > val softDeletedUDF = udf(softDeleted) > > > > > > def softDeleted() = (arg: String) => arg > > > } > > > > > > sparkSession.udf.register("softDeletedUDF", > > > SoftDeleteColInfo.softDeletedUDF) > > > df.withColumn(softDeleteHudiMetaCol, > > > functions.callUDF("softDeletedUDF", lit("true"))) > > > > > >