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Posted to issues@spark.apache.org by "Yin Huai (JIRA)" <ji...@apache.org> on 2015/06/20 01:24:00 UTC
[jira] [Resolved] (SPARK-8093) Spark 1.4 branch's new JSON schema
inference has changed the behavior of handling inner empty JSON object.
[ https://issues.apache.org/jira/browse/SPARK-8093?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yin Huai resolved SPARK-8093.
-----------------------------
Resolution: Fixed
Fix Version/s: 1.4.1
Issue resolved by pull request 6799
[https://github.com/apache/spark/pull/6799]
> Spark 1.4 branch's new JSON schema inference has changed the behavior of handling inner empty JSON object.
> ----------------------------------------------------------------------------------------------------------
>
> 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
> Assignee: Nathan Howell
> Priority: Critical
> Fix For: 1.4.1
>
> Attachments: t1.json
>
>
> 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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