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Posted to issues@hive.apache.org by "Arthur Baudry (JIRA)" <ji...@apache.org> on 2018/05/17 07:45:00 UTC
[jira] [Updated] (HIVE-19580) Hive 2.3.2 with ORC files stored on
S3 are case sensitive
[ https://issues.apache.org/jira/browse/HIVE-19580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Arthur Baudry updated HIVE-19580:
---------------------------------
Description:
Original file is csv:
COL1,COL2
1,2
ORC file are created with Spark 2.3:
scala> val df = spark.read.option("header","true").csv("/user/hadoop/file")
scala> df.printSchema
root
|– COL1: string (nullable = true)|
|– COL2: string (nullable = true)|
scala> df.write.orc("s3://bucket/prefix")
In Hive:
hive> CREATE EXTERNAL TABLE test_orc(COL1 STRING, COL2 STRING) STORED AS ORC LOCATION ("s3://bucket/prefix");
hive> SELECT * FROM test_orc;
OK
NULL NULL
*Everyfield is null. However if fields are generated using lower case in Spark schemas then everything works.*
The reason why I'm raising this bug is that we have customers using Hive 2.3.2 to read files we generate through Spark and all our code base is addressing fields using upper case while this is incompatible with their Hive instance.
was:
Original file is csv:
COL1,COL2
1,2
ORC file are created with Spark 2.3:
scala> val df = spark.read.option("header","true").csv("/user/hadoop/file")
scala> df.printSchema
root
|-- COL1: string (nullable = true)
|-- COL2: string (nullable = true)
scala> df.write.orc("s3://bucket/prefix")
In Hive:
hive> CREATE EXTERNAL TABLE test_orc(COL1 STRING, COL2 STRING) STORED AS ORC LOCATION ("s3://bucket/prefix");
hive> SELECT * FROM test_orc;
OK
NULL NULL
*Everything field is null. However if fields are generated using lower case in Spark schemas then everything works.*
The reason why I'm raising this bug is that we have customers using Hive 2.3.2 to read files we generate through Spark and all our code base is addressing fields using upper case while this is incompatible with their Hive instance.
> Hive 2.3.2 with ORC files stored on S3 are case sensitive
> ---------------------------------------------------------
>
> Key: HIVE-19580
> URL: https://issues.apache.org/jira/browse/HIVE-19580
> Project: Hive
> Issue Type: Bug
> Affects Versions: 2.3.2
> Environment: AWS S3 to store files
> Spark 2.3 but also true for lower versions
> Hive 2.3.2
> Reporter: Arthur Baudry
> Priority: Major
> Fix For: 2.3.2
>
>
> Original file is csv:
> COL1,COL2
> 1,2
> ORC file are created with Spark 2.3:
> scala> val df = spark.read.option("header","true").csv("/user/hadoop/file")
> scala> df.printSchema
> root
> |– COL1: string (nullable = true)|
> |– COL2: string (nullable = true)|
> scala> df.write.orc("s3://bucket/prefix")
> In Hive:
> hive> CREATE EXTERNAL TABLE test_orc(COL1 STRING, COL2 STRING) STORED AS ORC LOCATION ("s3://bucket/prefix");
> hive> SELECT * FROM test_orc;
> OK
> NULL NULL
> *Everyfield is null. However if fields are generated using lower case in Spark schemas then everything works.*
> The reason why I'm raising this bug is that we have customers using Hive 2.3.2 to read files we generate through Spark and all our code base is addressing fields using upper case while this is incompatible with their Hive instance.
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