Insert overwrite vs Delete HDFS partition and writ

问题:

Is there any major performance issue for parquet in using

hiveContext.sql("INSERT OVERWRITE TABLE table_name PARTITION(dt='2016-06-08', country) , select x,y,z,country from DFTmpTable");

VS

DeleteHDFSfile(/table/dt='2016-06-08')
DF.write().mode("append").partitionBy("dt","country").parquet("/table/dt='2016-06-08'")