本文整理汇总了Scala中org.apache.hadoop.hive.ql.session.SessionState类的典型用法代码示例。如果您正苦于以下问题：Scala SessionState类的具体用法？Scala SessionState怎么用？Scala SessionState使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
在下文中一共展示了SessionState类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Scala代码示例。
示例1: HiveValid
//设置package包名称以及导入依赖的类
package hivevalid
import org.apache.hadoop.hive.ql.Driver
import org.apache.hadoop.hive.ql.processors.CommandProcessorResponse
import org.apache.hadoop.hive.ql.session.SessionState
import org.slf4j.LoggerFactory
import scala.concurrent.Await
import scala.concurrent.duration.Duration
object HiveValid {
lazy val hiveConf =
Await.result(HiveSupport.initialize(log = logger.info), Duration.Inf)
def runMeta(query: String): CommandProcessorResponse = withDriver {
_ run query
}
def compile(query: String): CompileResult = withDriver { driver =>
if (driver.compile(query) == 0)
CompileResult.Success
else
CompileResult.Failure(driver.getErrorMsg)
}
sealed trait CompileResult
object CompileResult {
case object Success extends CompileResult
case class Failure(msg: String) extends CompileResult
}
private def withDriver[R](action: Driver => R): R = {
SessionState.start(hiveConf)
SessionState.get.setIsSilent(true)
val driver = new Driver(hiveConf)
try {
driver.init()
action(driver)
} finally {
driver.close()
SessionState.detachSession()
}
}
private val logger = LoggerFactory.getLogger(HiveValid.getClass)
}