Github user xguo27 commented on a diff in the pull request:
https://github.com/apache/spark/pull/9553#discussion_r48095871
--- Diff:
repl/scala-2.10/src/main/scala/org/apache/spark/repl/SparkILoop.scala ---
@@ -1026,17 +1027,30 @@ class SparkILoop(
@DeveloperApi
def createSQLContext(): SQLContext = {
- val name = "org.apache.spark.sql.hive.HiveContext"
+ useHiveContext =
sparkContext.getConf.getBoolean("spark.sql.useHiveContext", true)
+ val name = {
+ if (useHiveContext) "org.apache.spark.sql.hive.HiveContext"
+ else "org.apache.spark.sql.SQLContext"
+ }
+
val loader = Utils.getContextOrSparkClassLoader
try {
sqlContext =
loader.loadClass(name).getConstructor(classOf[SparkContext])
.newInstance(sparkContext).asInstanceOf[SQLContext]
- logInfo("Created sql context (with Hive support)..")
+ if (useHiveContext) {
+ logInfo("Created sql context (with Hive support). To use
sqlContext (without Hive), " +
+ "set spark.sql.useHiveContext to false before launching
spark-shell.")
+ }
+ else {
+ logInfo("Created sql context.")
+ }
}
catch {
- case _: java.lang.ClassNotFoundException | _:
java.lang.NoClassDefFoundError =>
+ case _: java.lang.ClassNotFoundException | _:
java.lang.NoClassDefFoundError
+ if useHiveContext =>
sqlContext = new SQLContext(sparkContext)
- logInfo("Created sql context..")
+ logInfo("Created sql context without Hive support, " +
+ "build Spark with -Phive to enable Hive support.")
--- End diff --
When -Phive is used (which provides necessary hive jars) and an exception
other than ClassNotFound/NoClassDefFound occured, now how we handle it is to
let the exception be propagated without creating an alternative SqlContext.
Do you mean by this case, we should catch -> log -> re-throw?
---
If your project is set up for it, you can reply to this email and have your
reply appear on GitHub as well. If your project does not have this feature
enabled and wishes so, or if the feature is enabled but not working, please
contact infrastructure at [email protected] or file a JIRA ticket
with INFRA.
---
---------------------------------------------------------------------
To unsubscribe, e-mail: [email protected]
For additional commands, e-mail: [email protected]
