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https://issues.apache.org/jira/browse/SPARK-18931?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Xiao Li resolved SPARK-18931.
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Resolution: Duplicate
> Create empty staging directory in partitioned table on insert
> -------------------------------------------------------------
>
> Key: SPARK-18931
> URL: https://issues.apache.org/jira/browse/SPARK-18931
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Affects Versions: 2.0.2
> Reporter: Egor Pahomov
>
> CREATE TABLE temp.test_partitioning_4 (
> num string
> )
> PARTITIONED BY (
> day string)
> stored as parquet
> On every
> INSERT INTO TABLE temp.test_partitioning_4 PARTITION (day)
> select day, count(*) as num from
> hss.session where year=2016 and month=4
> group by day
> new directory
> ".hive-staging_hive_2016-12-19_15-55-11_298_3412488541559534475-4" created on
> HDFS. It's big issue, because I insert every day and bunch of empty dirs on
> HDFS is very bad for HDFS.
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