Harish Butani created SPARK-8093:
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Summary: Failure to save empty json object as parquet
Key: SPARK-8093
URL: https://issues.apache.org/jira/browse/SPARK-8093
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 1.4.0
Reporter: Harish Butani
This is similar to SPARK-3365. Sample json is attached. Code to reproduce
{code}
var jsonDF = read.json("/tmp/t1.json")
jsonDF.write.parquet("/tmp/t1.parquet")
{code}
The 'integration' object is empty in the json.
StackTrace:
{code}
....
Caused by: java.io.IOException: Could not read footer:
java.lang.IllegalStateException: Cannot build an empty group
at
parquet.hadoop.ParquetFileReader.readAllFootersInParallel(ParquetFileReader.java:238)
at
org.apache.spark.sql.parquet.ParquetRelation2$MetadataCache.refresh(newParquet.scala:369)
at
org.apache.spark.sql.parquet.ParquetRelation2.org$apache$spark$sql$parquet$ParquetRelation2$$metadataCache$lzycompute(newParquet.scala:154)
at
org.apache.spark.sql.parquet.ParquetRelation2.org$apache$spark$sql$parquet$ParquetRelation2$$metadataCache(newParquet.scala:152)
at
org.apache.spark.sql.parquet.ParquetRelation2.refresh(newParquet.scala:197)
at
org.apache.spark.sql.sources.InsertIntoHadoopFsRelation.insert(commands.scala:134)
... 69 more
Caused by: java.lang.IllegalStateException: Cannot build an empty group
{code}
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