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https://issues.apache.org/jira/browse/SPARK-25271?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16603126#comment-16603126
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Sujith commented on SPARK-25271:
--------------------------------
[~cloud_fan] [~sowen] Will this cause a compatibility problem compare to older
version, If user has null record ,then he is getting an exception with the
current version where as the older version of spark(2.2.1) wont throw any
exception.
I think the Output writers has been updated in the below PR
[https://github.com/apache/spark/pull/20521]
> Creating parquet table with all the column null throws exception
> ----------------------------------------------------------------
>
> Key: SPARK-25271
> URL: https://issues.apache.org/jira/browse/SPARK-25271
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: shivusondur
> Priority: Major
>
> {code:java}
> 1)cat /data/parquet.dat
> 1$abc2$pqr:3$xyz
> null{code}
>
> {code:java}
> 2)spark.sql("create table vp_reader_temp (projects map<int, string>) ROW
> FORMAT DELIMITED FIELDS TERMINATED BY ',' COLLECTION ITEMS TERMINATED BY ':'
> MAP KEYS TERMINATED BY '$'")
> {code}
> {code:java}
> 3)spark.sql("
> LOAD DATA LOCAL INPATH '/data/parquet.dat' INTO TABLE vp_reader_temp")
> {code}
> {code:java}
> 4)spark.sql("create table vp_reader STORED AS PARQUET as select * from
> vp_reader_temp")
> {code}
> *Result :* Throwing exception (Working fine with spark 2.2.1)
> {code:java}
> java.lang.RuntimeException: Parquet record is malformed: empty fields are
> illegal, the field should be ommited completely instead
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.write(DataWritableWriter.java:64)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriteSupport.write(DataWritableWriteSupport.java:59)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriteSupport.write(DataWritableWriteSupport.java:31)
> at
> org.apache.parquet.hadoop.InternalParquetRecordWriter.write(InternalParquetRecordWriter.java:123)
> at
> org.apache.parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:180)
> at
> org.apache.parquet.hadoop.ParquetRecordWriter.write(ParquetRecordWriter.java:46)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.ParquetRecordWriterWrapper.write(ParquetRecordWriterWrapper.java:112)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.ParquetRecordWriterWrapper.write(ParquetRecordWriterWrapper.java:125)
> at
> org.apache.spark.sql.hive.execution.HiveOutputWriter.write(HiveFileFormat.scala:149)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$SingleDirectoryWriteTask.execute(FileFormatWriter.scala:406)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:283)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask$3.apply(FileFormatWriter.scala:281)
> at
> org.apache.spark.util.Utils$.tryWithSafeFinallyAndFailureCallbacks(Utils.scala:1438)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$.org$apache$spark$sql$execution$datasources$FileFormatWriter$$executeTask(FileFormatWriter.scala:286)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$write$1.apply(FileFormatWriter.scala:211)
> at
> org.apache.spark.sql.execution.datasources.FileFormatWriter$$anonfun$write$1.apply(FileFormatWriter.scala:210)
> at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:87)
> at org.apache.spark.scheduler.Task.run(Task.scala:109)
> at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:349)
> at
> java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
> at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
> at java.lang.Thread.run(Thread.java:745)
> Caused by: org.apache.parquet.io.ParquetEncodingException: empty fields are
> illegal, the field should be ommited completely instead
> at
> org.apache.parquet.io.MessageColumnIO$MessageColumnIORecordConsumer.endField(MessageColumnIO.java:320)
> at
> org.apache.parquet.io.RecordConsumerLoggingWrapper.endField(RecordConsumerLoggingWrapper.java:165)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeMap(DataWritableWriter.java:241)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeValue(DataWritableWriter.java:116)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.writeGroupFields(DataWritableWriter.java:89)
> at
> org.apache.hadoop.hive.ql.io.parquet.write.DataWritableWriter.write(DataWritableWriter.java:60)
> ... 21 more
> {code}
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