Hi,
If these bounaries are not given, spark tries to read all the data as a
single parition.
See:
https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/JDBCRelation.scala#L56
// maropu
On Wed, Aug 3, 2016 at 11:19 PM, Selvam Raman
Hi All,
I would like to read the data from RDBMS to spark (2.0) using sparksession.
How can i decide upper boundary, lower boundary and partitions.
is there any specific approach available.
How Sqoop2 decides number of partitions, upper and lower boundary if we are
not specifying anything.
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