[jira] [Created] (SPARK-21661) SparkSQL can't merge load table from Hadoop

["Dapeng Sun (JIRA)" <ji...@apache.org>]

Dapeng Sun created SPARK-21661:
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             Summary: SparkSQL can't merge load table from Hadoop
                 Key: SPARK-21661
                 URL: https://issues.apache.org/jira/browse/SPARK-21661
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 2.2.0
            Reporter: Dapeng Sun


Here is the original text of external table on HDFS：
{noformat}
Permission	Owner	Group	Size	Last Modified	Replication	Block Size	Name
-rw-r--r--	root	supergroup	0 B	8/6/2017, 11:43:03 PM	3	256 MB	income_band_001.dat
-rw-r--r--	root	supergroup	0 B	8/6/2017, 11:39:31 PM	3	256 MB	income_band_002.dat
...
-rw-r--r--	root	supergroup	327 B	8/6/2017, 11:44:47 PM	3	256 MB	income_band_530.dat
{noformat}
After SparkSQL load, each files have a output, even the files are 0B. For the load on Hive, the data files would be merged according the data size of original files.




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