JDBC Very Slow

[Benjamin Kim]

Has anyone using Spark 1.6.2 encountered very slow responses from pulling data 
from PostgreSQL using JDBC? I can get to the table and see the schema, but when 
I do a show, it takes very long or keeps timing out.

The code is simple.

val jdbcDF = sqlContext.read.format("jdbc").options(
    Map("url" -> 
"jdbc:postgresql://dbserver:port/database?user=user&password=password",
   "dbtable" -> “schema.table")).load()

jdbcDF.show

If anyone can help, please let me know.

Thanks,
Ben