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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