Github user sureshthalamati commented on the pull request:
https://github.com/apache/spark/pull/8374#issuecomment-143590823
I am new to git, not sure if I am reading the changes correctly. It
looks you
are undoing https://issues.apache.org/jira/browse/SPARK-9078 changes in
your last
merge.
I see you fixed the current dialect implementation in the code to use the
new method, but there
can be custom dialect implementations using the old getJDBCType(dt:
DataType) method.
After this change , user specified existing custom dialects may not work.
Example :
import org.apache.spark.sql.jdbc._
JdbcDialects.registerDialect(MyNetEzzaDialect)
Another minor thing, any particualar reason for setting java.sql.Types.CHAR
insead of
java.sql.Types.VARCHAR in the following statements.
OracleDialect :
Some(JdbcType(s"VARCHAR(${md.getLong("maxlength")})", java.sql.Types.CHAR))
NetEzzaDialect :
Some(JdbcType("VARCHAR(255)", java.sql.Types.CHAR))
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