Hadoop 无法使用Spark从HDFS读取文件

我使用cloudera manager安装了cloudera CDH 5

我很容易做到

hadoop fs -ls /input/war-and-peace.txt
hadoop fs -cat /input/war-and-peace.txt

上述命令将在控制台上打印整个txt文件

现在我启动火花壳并说

val textFile = sc.textFile("hdfs://input/war-and-peace.txt")
textFile.count

现在我得到一个错误

Spark上下文作为sc提供

scala> val textFile = sc.textFile("hdfs://input/war-and-peace.txt")
2014-12-14 15:14:57,874 INFO  [main] storage.MemoryStore (Logging.scala:logInfo(59)) - ensureFreeSpace(177621) called with curMem=0, maxMem=278302556
2014-12-14 15:14:57,877 INFO  [main] storage.MemoryStore (Logging.scala:logInfo(59)) - Block broadcast_0 stored as values in memory (estimated size 173.5 KB, free 265.2 MB)
textFile: org.apache.spark.rdd.RDD[String] = hdfs://input/war-and-peace.txt MappedRDD[1] at textFile at <console>:12

scala> textFile.count
2014-12-14 15:15:21,791 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 0 time(s); maxRetries=45
2014-12-14 15:15:41,905 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 1 time(s); maxRetries=45
2014-12-14 15:16:01,925 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 2 time(s); maxRetries=45
2014-12-14 15:16:21,983 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 3 time(s); maxRetries=45
2014-12-14 15:16:42,001 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 4 time(s); maxRetries=45
2014-12-14 15:17:02,062 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 5 time(s); maxRetries=45
2014-12-14 15:17:22,082 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 6 time(s); maxRetries=45
2014-12-14 15:17:42,116 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 7 time(s); maxRetries=45
2014-12-14 15:18:02,138 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 8 time(s); maxRetries=45
2014-12-14 15:18:22,298 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 9 time(s); maxRetries=45
2014-12-14 15:18:42,319 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 10 time(s); maxRetries=45
2014-12-14 15:19:02,354 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 11 time(s); maxRetries=45
2014-12-14 15:19:22,373 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 12 time(s); maxRetries=45
2014-12-14 15:19:42,424 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 13 time(s); maxRetries=45
2014-12-14 15:20:02,446 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 14 time(s); maxRetries=45
2014-12-14 15:20:22,512 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 15 time(s); maxRetries=45
2014-12-14 15:20:42,515 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 16 time(s); maxRetries=45
2014-12-14 15:21:02,550 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 17 time(s); maxRetries=45
2014-12-14 15:21:22,558 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 18 time(s); maxRetries=45
2014-12-14 15:21:42,683 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 19 time(s); maxRetries=45
2014-12-14 15:22:02,702 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 20 time(s); maxRetries=45
2014-12-14 15:22:22,832 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 21 time(s); maxRetries=45
2014-12-14 15:22:42,852 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 22 time(s); maxRetries=45
2014-12-14 15:23:02,974 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 23 time(s); maxRetries=45
2014-12-14 15:23:22,995 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 24 time(s); maxRetries=45
2014-12-14 15:23:43,109 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 25 time(s); maxRetries=45
2014-12-14 15:24:03,128 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 26 time(s); maxRetries=45
2014-12-14 15:24:23,250 INFO  [main] ipc.Client (Client.java:handleConnectionTimeout(814)) - Retrying connect to server: input/92.242.140.21:8020. Already tried 27 time(s); maxRetries=45
java.net.ConnectException: Call From dn1home/192.168.1.21 to input:8020 failed on connection exception: java.net.ConnectException: Connection refused; For more details see:  http://wiki.apache.org/hadoop/ConnectionRefused
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:57)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
        at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:783)
        at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:730)
        at org.apache.hadoop.ipc.Client.call(Client.java:1415)

scala>val textFile=sc.textFile（“hdfs://input/war-and-peace.txt")
2014-12-14 15:14:57874 INFO[main]storage.MemoryStore（Logging.scala:logInfo（59））-ensurerefreespace（177621）调用curMem=0，maxMem=278302556
2014-12-14 15:14:57877 INFO[main]storage.MemoryStore（Logging.scala:logInfo（59））-块广播_0作为值存储在内存中（估计大小173.5 KB，可用容量265.2 MB）
textFile:org.apache.spark.rdd.rdd[String]=hdfs://input/war-and-peace.txt 文本文件中的MappedRDD[1]位于：12
scala>textFile.count
2014-12-14 15:15:21791信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已尝试0次；maxRetries=45
2014-12-14 15:15:41905 INFO[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过1次；maxRetries=45
2014-12-14 15:16:01925 INFO[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过2次；maxRetries=45
2014-12-14 15:16:21983信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过3次；maxRetries=45
2014-12-14 15:16:42001信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过4次；maxRetries=45
2014-12-14 15:17:02062信息[main]ipc.客户端（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过5次；maxRetries=45
2014-12-14 15:17:22082信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过6次；maxRetries=45
2014-12-14 15:17:42116信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过7次；maxRetries=45
2014-12-14 15:18:02138信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过8次；maxRetries=45
2014-12-14 15:18:22298信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过9次；maxRetries=45
2014-12-14 15:18:42319信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过10次；maxRetries=45
2014-12-14 15:19:02354信息[main]ipc.客户端（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过11次；maxRetries=45
2014-12-14 15:19:22373信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过12次；maxRetries=45
2014-12-14 15:19:42424信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过13次；maxRetries=45
2014-12-14 15:20:02446信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过14次；maxRetries=45
2014-12-14 15:20:22512信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过15次；maxRetries=45
2014-12-14 15:20:42515信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过16次；maxRetries=45
2014-12-14 15:21:02550信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过17次；maxRetries=45
2014-12-14 15:21:22558信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过18次；maxRetries=45
2014-12-14 15:21:42683信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过19次；maxRetries=45
2014-12-14 15:22:02702 INFO[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过20次；maxRetries=45
2014-12-14 15:22:22832信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过21次；maxRetries=45
2014-12-14 15:22:42852信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过22次；maxRetries=45
2014-12-14 15:23:02974 INFO[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过23次；maxRetries=45
2014-12-14 15:23:22995信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过24次；maxRetries=45
2014-12-14 15:23:43109信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过25次；maxRetries=45
2014-12-14 15:24:03128信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-重试连接到服务器：input/92.242.140.21:8020。已试过26次；maxRetries=45
2014-12-14 15:24:23250信息[main]ipc.Client（Client.java:handleConnectionTimeout（814））-正在重试连接到服务器：inpu
sc.textFile("hdfs://nn1home:8020/input/war-and-peace.txt")

val textFile=sc.textFile("hdfs:/input1/Card_History2016_3rdFloor.csv")

textFile: org.apache.spark.rdd.RDD[String] = MapPartitionsRDD[1] at textFile at <console>:22

textFile.count

res1: Long = 58973  

   logFile = "hdfs://localhost:9000/sampledata/sample.txt"

sc.textFie("/myhdfsdirectory/myfiletoprocess.txt")

hdfs dfs -mkdir /myhdfsdirectory

hdfs dfs -copyFromLocal mylocalfile /myhdfsdirectory/myfiletoprocess.txt

hdfs://localhost:54310/input/war-and-peace.txt

 val conf = new SparkConf().setMaster("local[*]").setAppName("HDFSFileReader")
conf.set("fs.defaultFS", "hdfs://hostname:9000")
val sc = new SparkContext(conf)
val data = sc.textFile("hdfs://hostname:9000/hdfspath/")
data.saveAsTextFile("C:\\dummy\")

val textFile = sc.textFile("hdfs://localhost:9000/user/input.txt")

var result= scontext.textFile("hdfs://localhost:9000/home/usr/abc/fileName.txt", 2)