4paradigm / 4paradigm/OpenMLDB

Fail to submit the OpenMLDB offline job with Spark 3.0 java client

Abierto
#3,460 0 comentarios 0 reacciones 1 asignado Reclamado por @tobegit3hub Ver en GitHub
bug
Lenguaje dominante
C++
Estrellas
1.7k
Forks
331
Merge medio
12 d 12 h
PR fusionados (30 d)
1

Descripción

0.6.4 with Spark 3.2.1 is supported but the latest 0.8.2 is not supported.

Here is the related error message.

```
Caused by: java.io.IOException: Could not read footer for file: FileStatus{path=hdfs://cmos-app1:8020/user/work/workspace/user_testab/telamon/1/e33af9e7-bfa2-4171-b37c-a9cbf3c91d23/t1_table/_common_metadata; isDirectory=false; length=166; replication=0; blocksize=0; modification_time=0; access_time=0; owner=; group=; permission=rw-rw-rw-; isSymlink=false; hasAcl=false; isEncrypted=false; isErasureCoded=false}
at org.apache.spark.sql.errors.QueryExecutionErrors$.cannotReadFooterForFileError(QueryExecutionErrors.scala:726)
at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$.$anonfun$readParquetFootersInParallel$1(ParquetFileFormat.scala:494)
at org.apache.spark.util.ThreadUtils$.$anonfun$parmap$2(ThreadUtils.scala:372)
at scala.concurrent.Future$.$anonfun$apply$1(Future.scala:659)
at scala.util.Success.$anonfun$map$1(Try.scala:255)
at scala.util.Success.map(Try.scala:213)
at scala.concurrent.Future.$anonfun$map$1(Future.scala:292)
at scala.concurrent.impl.Promise.liftedTree1$1(Promise.scala:33)
at scala.concurrent.impl.Promise.$anonfun$transform$1(Promise.scala:33)
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:64)
at java.util.concurrent.ForkJoinTask$RunnableExecuteAction.exec(ForkJoinTask.java:1402)
at java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:289)
at java.util.concurrent.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1056)
at java.util.concurrent.ForkJoinPool.runWorker(ForkJoinPool.java:1692)
at java.util.concurrent.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:157)
Caused by: java.lang.ClassCastException: org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$GetBlockLocationsRequestProto cannot be cast to org.apache.hadoop.shaded.com.google.protobuf.Message
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:233)
at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:123)
at com.sun.proxy.$Proxy19.getBlockLocations(Unknown Source)
at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:333)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:422)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeMethod(RetryInvocationHandler.java:165)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invoke(RetryInvocationHandler.java:157)
at org.apache.hadoop.io.retry.RetryInvocationHandler$Call.invokeOnce(RetryInvocationHandler.java:95)
at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:359)
at com.sun.proxy.$Proxy20.getBlockLocations(Unknown Source)
at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:892)
at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:881)
at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:870)
at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1038)
at org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:339)
at org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:335)
at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:352)
at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:976)
at org.apache.parquet.hadoop.util.HadoopInputFile.newStream(HadoopInputFile.java:69)
at org.apache.parquet.hadoop.ParquetFileReader.(ParquetFileReader.java:773)
at org.apache.parquet.hadoop.ParquetFileReader.open(ParquetFileReader.java:657)
at org.apache.spark.sql.execution.datasources.parquet.ParquetFooterReader.readFooter(ParquetFooterReader.java:53)
at org.apache.spark.sql.execution.datasources.parquet.ParquetFooterReader.readFooter(ParquetFooterReader.java:44)
at org.apache.spark.sql.execution.datasources.parquet.ParquetFileFormat$.$anonfun$readParquetFootersInParallel$1(ParquetFileFormat.scala:488)
... 13 more
```

Guía de contribución

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Línea de trabajo

The error is a ClassCastException in Hadoop's ProtobufRpcEngine when reading Parquet footers via Spark 3.0 client. Look at the Spark and Hadoop version compatibility in OpenMLDB's offline job submission code, likely in the Spark connector or job runner. Check dependency conflicts, especially around hadoop-client and protobuf versions. Reproduce with a minimal Spark 3.0 job against HDFS to see if the issue is in OpenMLDB's integration or a broader incompatibility.

Escrito por el modelo de indexación a partir del texto del issue.

Evaluación

Stack tecnológico
hadoop, java, spark
Área
backend, data-engineering, databases
Tipo de issue
Error
Dificultad
4/5
Tiempo estimado
3-5 días
Estado de actividad
Estancado
Claridad
Bastante claro
Aptitud para principiantes
30/100

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