Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/15377#discussion_r82181784 --- Diff: core/src/main/scala/org/apache/spark/util/Utils.scala --- @@ -2474,25 +2474,36 @@ private[spark] class CallerContext( val context = "SPARK_" + from + appIdStr + appAttemptIdStr + jobIdStr + stageIdStr + stageAttemptIdStr + taskIdStr + taskAttemptNumberStr + private var callerContextSupported: Boolean = true + /** * Set up the caller context [[context]] by invoking Hadoop CallerContext API of * [[org.apache.hadoop.ipc.CallerContext]], which was added in hadoop 2.8. */ def setCurrentContext(): Boolean = { - var succeed = false - try { - // scalastyle:off classforname - val callerContext = Class.forName("org.apache.hadoop.ipc.CallerContext") - val Builder = Class.forName("org.apache.hadoop.ipc.CallerContext$Builder") - // scalastyle:on classforname - val builderInst = Builder.getConstructor(classOf[String]).newInstance(context) - val hdfsContext = Builder.getMethod("build").invoke(builderInst) - callerContext.getMethod("setCurrent", callerContext).invoke(null, hdfsContext) - succeed = true - } catch { - case NonFatal(e) => logInfo("Fail to set Spark caller context", e) + if (!callerContextSupported) { + false + } else { + try { + // scalastyle:off classforname + val callerContext = Class.forName("org.apache.hadoop.ipc.CallerContext") + val builder = Class.forName("org.apache.hadoop.ipc.CallerContext$Builder") + // scalastyle:on classforname + val builderInst = builder.getConstructor(classOf[String]).newInstance(context) + val hdfsContext = builder.getMethod("build").invoke(builderInst) + callerContext.getMethod("setCurrent", callerContext).invoke(null, hdfsContext) + true + } catch { + case e: ClassNotFoundException => + logInfo( + s"Fail to set Spark caller context: requires Hadoop 2.8 or later: ${e.getMessage}") + callerContextSupported = false + false + case NonFatal(e) => + logWarning("Fail to set Spark caller context", e) --- End diff -- I guess I mean: set `callerContextSupported = false` here too right? or else you're still going to fail over and over and log it if something besides ClassNotFoundException happens. Which is probably a pretty fatal error actually, but hey.
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