emr 判断 s3 上面的路劲存不存在

[chu8129]

例如我生成了一系列的路劲，我想加载这些文件夹内的所有文件： filePath : ['s3:///dt=2016-06-01/', 's3:///dt=2016-06-02/']

sc.textFile(",".join(set(self.filePaths)))加载所有文件时，如果某一个文件夹不存在或者某一个路劲匹配不到文件时会报错，想请假下大家怎么处理这个问题？

py4j.protocol.Py4JJavaError: An error occurred while calling o52.partitions. : org.apache.hadoop.mapred.InvalidInputException: Input path does not exist: file:*********/dt=2016-06-02 at org.apache.hadoop.mapred.FileInputFormat.singleThreadedListStatus(FileInputFormat.java:285) at org.apache.hadoop.mapred.FileInputFormat.listStatus(FileInputFormat.java:228) at org.apache.hadoop.mapred.FileInputFormat.getSplits(FileInputFormat.java:304) at org.apache.spark.rdd.HadoopRDD.getPartitions(HadoopRDD.scala:199) at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:239) at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:237) at scala.Option.getOrElse(Option.scala:120) at org.apache.spark.rdd.RDD.partitions(RDD.scala:237) at org.apache.spark.rdd.MapPartitionsRDD.getPartitions(MapPartitionsRDD.scala:35) at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:239) at org.apache.spark.rdd.RDD$$anonfun$partitions$2.apply(RDD.scala:237) at scala.Option.getOrElse(Option.scala:120) at org.apache.spark.rdd.RDD.partitions(RDD.scala:237) at org.apache.spark.api.java.JavaRDDLike$class.partitions(JavaRDDLike.scala:64) at org.apache.spark.api.java.AbstractJavaRDDLike.partitions(JavaRDDLike.scala:46) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381) at py4j.Gateway.invoke(Gateway.java:259) at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133) at py4j.commands.CallCommand.execute(CallCommand.java:79) at py4j.GatewayConnection.run(GatewayConnection.java:209) at java.lang.Thread.run(Thread.java:745)

16/06/12 10:10:55 INFO SparkContext: Invoking stop() from shutdown ho