StephenZou created SPARK-24096:
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Summary: file format issue using create table as select
Key: SPARK-24096
URL: https://issues.apache.org/jira/browse/SPARK-24096
Project: Spark
Issue Type: Bug
Components: SQL
Affects Versions: 2.3.0
Reporter: StephenZou
In my spark conf directory, hive-site.xml have an item indicating orc is the
default file format.
<property>
<name>hive.default.fileformat</name>
<value>orc</value>
</property>
But when I use "create table as select ..." to create a table, the output
format is plain text.
It works only I use "set hive.default.fileformat=orc"
Then I walked through the spark code and found in
sparkSqlParser:visitCreateHiveTable,
val defaultStorage = HiveSerDe.getDefaultStorage(conf) the conf is SQLConf,
that explains the above observation,
"set hive.default.fileformat=orc" is put into conf map, hive-site.xml is not.
It's quite misleading, How to unify the settings?
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