本文主要針對使用CDH平臺的HUE時候碰到兩類問題，最終問題並沒有得到很好的解決，只是提供了一種繞行方式，歡迎知道的朋友補充。
## **NO 1: HUE執行jar包**
> 第一種報錯
org.apache.oozie.action.hadoop.LauncherException: IO error
at org.apache.oozie.action.hadoop.LauncherAM.setRecoveryId(LauncherAM.java:487)
at org.apache.oozie.action.hadoop.LauncherAM.runActionMain(LauncherAM.java:403)
at org.apache.oozie.action.hadoop.LauncherAM.access$300(LauncherAM.java:55)
at org.apache.oozie.action.hadoop.LauncherAM$2.run(LauncherAM.java:223)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.oozie.action.hadoop.LauncherAM.run(LauncherAM.java:217)
at org.apache.oozie.action.hadoop.LauncherAM$1$.run(LauncherAM.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.oozie.action.hadoop.LauncherAM.main(LauncherAM.java:141)
Caused by: java.lang.NumberFormatException: For input string: "30s"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:589)
at java.lang.Long.parseLong(Long.java:631)
at org.apache.hadoop.conf.Configuration.getLong(Configuration.java:1267)
at org.apache.hadoop.hdfs.DFSClient$Conf.<init>(DFSClient.java:491)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:620)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:604)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:148)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2598)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:91)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2632)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2614)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:370)
at org.apache.oozie.action.hadoop.HdfsOperations.fileExists(HdfsOperations.java:76)
at org.apache.oozie.action.hadoop.LauncherAM.setRecoveryId(LauncherAM.java:473)
... 12 more
> 第二種報錯
java.net.ConnectException: Connection timed out: no further information
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
at org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:3090)
at org.apache.hadoop.hdfs.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:778)
at org.apache.hadoop.hdfs.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:693)
at org.apache.hadoop.hdfs.BlockReaderFactory.build(BlockReaderFactory.java:354)
at org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:617)
at org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:841)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:889)
at java.io.DataInputStream.read(DataInputStream.java:100)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:78)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:52)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:112)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:366)
at org.apache.hadoop.yarn.util.FSDownload.copy(FSDownload.java:265)
at org.apache.hadoop.yarn.util.FSDownload.access$000(FSDownload.java:61)
at org.apache.hadoop.yarn.util.FSDownload$2.run(FSDownload.java:359)
at org.apache.hadoop.yarn.util.FSDownload$2$.run(FSDownload.java:357)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:356)
at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:60)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
2020-10-14 10:37:32,204 WARN [org.apache.hadoop.hdfs.DFSClient] - Failed to connect to /172.18.0.116:9866 for block, add to deadNodes and continue. java.net.ConnectException: Connection timed out: no further information
java.net.ConnectException: Connection timed out: no further information
at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)
at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:717)
at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)
at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:530)
at org.apache.hadoop.hdfs.DFSClient.newConnectedPeer(DFSClient.java:3090)
at org.apache.hadoop.hdfs.BlockReaderFactory.nextTcpPeer(BlockReaderFactory.java:778)
at org.apache.hadoop.hdfs.BlockReaderFactory.getRemoteBlockReaderFromTcp(BlockReaderFactory.java:693)
at org.apache.hadoop.hdfs.BlockReaderFactory.build(BlockReaderFactory.java:354)
at org.apache.hadoop.hdfs.DFSInputStream.blockSeekTo(DFSInputStream.java:617)
at org.apache.hadoop.hdfs.DFSInputStream.readWithStrategy(DFSInputStream.java:841)
at org.apache.hadoop.hdfs.DFSInputStream.read(DFSInputStream.java:889)
at java.io.DataInputStream.read(DataInputStream.java:100)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:78)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:52)
at org.apache.hadoop.io.IOUtils.copyBytes(IOUtils.java:112)
at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:366)
at org.apache.hadoop.yarn.util.FSDownload.copy(FSDownload.java:265)
at org.apache.hadoop.yarn.util.FSDownload.access$000(FSDownload.java:61)
at org.apache.hadoop.yarn.util.FSDownload$2.run(FSDownload.java:359)
at org.apache.hadoop.yarn.util.FSDownload$2$.run(FSDownload.java:357)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:356)
at org.apache.hadoop.yarn.util.FSDownload.call(FSDownload.java:60)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
> 第三種報錯
org.apache.oozie.action.ActionExecutorException: JA009: cache file (mapreduce.job.cache.files) scheme: "hdfs" host: "bdpcdh6301" port: 8020 file: "/user/hue/oozie/workspaces/hue-oozie-1602643504.47/lib/xxxxx_wordcount.jar" conflicts with cache file (mapreduce.job.cache.files) hdfs://bdpcdh6301:8020/bdp/code/wordcount/xxxx_wordcount.jar#xxxxx_wordcount.jar
at org.apache.oozie.action.ActionExecutor.convertExceptionHelper(ActionExecutor.java:469)
at org.apache.oozie.action.ActionExecutor.convertException(ActionExecutor.java:447)
at org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:1104)
at org.apache.oozie.action.hadoop.JavaActionExecutor.start(JavaActionExecutor.java:1590)
at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:243)
at org.apache.oozie.command.wf.ActionStartXCommand.execute(ActionStartXCommand.java:68)
at org.apache.oozie.command.XCommand.call(XCommand.java:291)
at org.apache.oozie.service.CallableQueueServiceCompositeCallable.call(CallableQueueService.java:363)
at org.apache.oozie.service.CallableQueueServiceCompositeCallable.call(CallableQueueService.java:292)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at org.apache.oozie.service.CallableQueueServiceCallableWrapper.run(CallableQueueService.java:210)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.apache.hadoop.mapred.InvalidJobConfException: cache file (mapreduce.job.cache.files) scheme: "hdfs" host: "xxxxxxxxx" port: 8020 file: "/user/hue/oozie/workspaces/hue-oozie-1602643504.47/lib/xxxxxxxx.jar" conflicts with cache file (mapreduce.job.cache.files) hdfs://bdpcdh6301:8020/bdp/code/wordcount/xxxx_wordcount.jar#xxxxx_wordcount.jar
at org.apache.hadoop.mapreduce.v2.util.LocalResourceBuilder.createLocalResources(LocalResourceBuilder.java:149)
at org.apache.hadoop.mapreduce.v2.util.MRApps.setupDistributedCache(MRApps.java:502)
at org.apache.oozie.action.hadoop.JavaActionExecutor.createAppSubmissionContext(JavaActionExecutor.java:1180)
at org.apache.oozie.action.hadoop.JavaActionExecutor.submitLauncher(JavaActionExecutor.java:1091)
... 11 more
```sql
背景：執行mapreduce任務的時候一直報各種錯誤，上網找了方法，解決了一個錯誤又出現另外一個錯誤
原因：說實話到現在也不太清楚
解決方案：使用shell指令碼呼叫本地的jar包
```
## NO 2 : HUE執行shell指令碼
org.apache.oozie.action.hadoop.LauncherException: IO error
at org.apache.oozie.action.hadoop.LauncherAM.setRecoveryId(LauncherAM.java:487)
at org.apache.oozie.action.hadoop.LauncherAM.runActionMain(LauncherAM.java:403)
at org.apache.oozie.action.hadoop.LauncherAM.access$300(LauncherAM.java:55)
at org.apache.oozie.action.hadoop.LauncherAM$2.run(LauncherAM.java:223)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.oozie.action.hadoop.LauncherAM.run(LauncherAM.java:217)
at org.apache.oozie.action.hadoop.LauncherAM$1$.run(LauncherAM.java:153)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:422)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1692)
at org.apache.oozie.action.hadoop.LauncherAM.main(LauncherAM.java:141)
Caused by: java.lang.NumberFormatException: For input string: "30s"
at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.lang.Long.parseLong(Long.java:589)
at java.lang.Long.parseLong(Long.java:631)
at org.apache.hadoop.conf.Configuration.getLong(Configuration.java:1267)
at org.apache.hadoop.hdfs.DFSClient$Conf.<init>(DFSClient.java:491)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:620)
at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:604)
at org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:148)
at org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:2598)
at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:91)
at org.apache.hadoop.fs.FileSystem$Cache.getInternal(FileSystem.java:2632)
at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2614)
at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:370)
at org.apache.oozie.action.hadoop.HdfsOperations.fileExists(HdfsOperations.java:76)
at org.apache.oozie.action.hadoop.LauncherAM.setRecoveryId(LauncherAM.java:473)
... 12 more
Oozie Launcher, uploading action data to HDFS sequence file: hdfs://bdpcdh6301:8020/user/admin/oozie-oozi/0000011-201012085501781-oozie-oozi-W/shell-348e--shell/action-data.seq
```sql
背景：用hue執行shell指令碼，單獨執行shell指令碼沒有問題，但是用工作流執行的時候報錯
原因：安裝任務中用到的hadoop-hdfs依賴與安裝的版本不匹配所致
解決方案：因為之前執行過mr，然後改成shell。就一直報這個錯。我重新建立了一個工作流，用來執行shell就沒問題了
```