While setting up a single node cluster without Cygwin on windows 10,I followed the specific document- Link for Hadoop installation in windows 10
I am facing the below error while starting the hdfs using D:\hadoop-2.6.2.tar\hadoop-2.6.2\hadoop-2.6.2\sbin>start-dfs.cmd
Error message stack trace:
17/01/12 12:25:42 FATAL datanode.DataNode: Exception in secureMain java.lang.RuntimeException: Error while running command to get file permissions : ExitCodeException exitCode=-1073741515:
at org.apache.hadoop.util.Shell.runCommand(Shell.java:538)
at org.apache.hadoop.util.Shell.run(Shell.java:455)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:715)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:808)
at org.apache.hadoop.util.Shell.execCommand(Shell.java:791)
at org.apache.hadoop.fs.FileUtil.execCommand(FileUtil.java:1097)
at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:582)
at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:557)
at org.apache.hadoop.util.DiskChecker.mkdirsWithExistsAndPermissionCheck(DiskChecker.java:139)
at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:156)
at org.apache.hadoop.hdfs.server.datanode.DataNode$DataNodeDiskChecker.checkDir(DataNode.java:2299)
at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2341)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2323)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2215)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2262)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2438)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2462)
at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.loadPermissionInfo(RawLocalFileSystem.java:620)
at org.apache.hadoop.fs.RawLocalFileSystem$DeprecatedRawLocalFileStatus.getPermission(RawLocalFileSystem.java:557)
at org.apache.hadoop.util.DiskChecker.mkdirsWithExistsAndPermissionCheck(DiskChecker.java:139)
at org.apache.hadoop.util.DiskChecker.checkDir(DiskChecker.java:156)
at org.apache.hadoop.hdfs.server.datanode.DataNode$DataNodeDiskChecker.checkDir(DataNode.java:2299)
at org.apache.hadoop.hdfs.server.datanode.DataNode.checkStorageLocations(DataNode.java:2341)
at org.apache.hadoop.hdfs.server.datanode.DataNode.makeInstance(DataNode.java:2323)
at org.apache.hadoop.hdfs.server.datanode.DataNode.instantiateDataNode(DataNode.java:2215)
at org.apache.hadoop.hdfs.server.datanode.DataNode.createDataNode(DataNode.java:2262)
at org.apache.hadoop.hdfs.server.datanode.DataNode.secureMain(DataNode.java:2438)
at org.apache.hadoop.hdfs.server.datanode.DataNode.main(DataNode.java:2462) 17/01/12 12:25:42 INFO util.ExitUtil: Exiting with status 1
Also this error message about starting namenode:
17/01/12 12:25:43 FATAL namenode.NameNode: Failed to start namenode.
java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
at org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Native Method)
at org.apache.hadoop.io.nativeio.NativeIO$Windows.access(NativeIO.java:557)
at org.apache.hadoop.fs.FileUtil.canWrite(FileUtil.java:996)
at org.apache.hadoop.hdfs.server.common.Storage$StorageDirectory.analyzeStorage(Storage.java:490)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverStorageDirs(FSImage.java:309)
at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:202)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:1022)
at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:741)
at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:538)
at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:597)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:764)
at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:748)
at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1441)
at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1507)
17/01/12 12:25:43 INFO util.ExitUtil: Exiting with status 1
[]Problem analysis ] /data directory permissions is not enough, the NameNode cannot be started.
[Solution]
(1) in the root, the operation of the/data/directory permissions assigned to hadoop users;
(2) empty /data directory file;
(3) to reformat the NameNode, restart the hadoop cluster.
Related
I try to run this 'rabbitmq-server' command in my cmd but that give me this error ...
Configuring logger redirection
13:44:01.865 [warning] Using RABBITMQ_ADVANCED_CONFIG_FILE: c:/Users/saikat/AppData/Roaming/RabbitMQ/advanced.config
13:44:02.838 [error]
13:44:02.838 [error] BOOT FAILED
BOOT FAILED
13:44:02.838 [error] ===========
===========
13:44:02.838 [error] ERROR: distribution port 25672 in use by another node: rabbit#DESKTOP-1I7H1RC
ERROR: distribution port 25672 in use by another node: rabbit#DESKTOP-1I7H1RC
13:44:02.838 [error]
13:44:03.839 [error] Supervisor rabbit_prelaunch_sup had child prelaunch started with rabbit_prelaunch:run_prelaunch_first_phase() at undefined exit with reason {dist_port_already_used,25672,"rabbit","DESKTOP-1I7H1RC"} in context start_error
13:44:03.840 [error] CRASH REPORT Process <0.152.0> with 0 neighbours exited with reason: {{shutdown,{failed_to_start_child,prelaunch,{dist_port_already_used,25672,"rabbit","DESKTOP-1I7H1RC"}}},{rabbit_prelaunch_app,start,[normal,[]]}} in application_master:init/4 line 138
{"Kernel pid terminated",application_controller,"{application_start_failure,rabbitmq_prelaunch,{{shutdown,{failed_to_start_child,prelaunch,{dist_port_already_used,25672,\"rabbit\",\"DESKTOP-1I7H1RC\"}}},{rabbit_prelaunch_app,start,[normal,[]]}}}"}
Kernel pid terminated (application_controller) ({application_start_failure,rabbitmq_prelaunch,{{shutdown,{failed_to_start_child,prelaunch,{dist_port_already_used,25672,"rabbit","DESKTOP-1I7H1RC"}}},{r
Crash dump is being written to erl_crash.dump...done
No doubt you have already resolved this, but for anyone else this may help I had the same issue on Windows and managed to resolve it by doing the followed.
Open powershell as admin in *\rabbitmq_server-3.8.9\sbin*
Stop the service by running: .\rabbitmq-service.bat stop
Start the service by running: .\rabbitmq-server.bat
If you are on windows then go to Services
Search RabbitMq and Right click
Stop service
Open cmd as administrator
run cd C:\Program Files\RabbitMQ Server\rabbitmq_server-3.8.17\sbin
and then run rabbitmq-server
For me what I did was killing the process of erl from the task manager and then running the command:
rabbitmq-server.bat
Stack: Ambari 2.4.2.0, HDP 2.5.3.0, CentOS 6.8, FreeIPA 3.0.0
When I try to use hdp user to submit a job on yarn, _000001 container can be created and launched successfully, but I got error when _000002 container is being launched after container created:
2018-11-27 22:13:35,919 WARN privileged.PrivilegedOperationExecutor (PrivilegedOperationExecutor.java:executePrivilegedOperation(170)) - Shell execution returned exit code: 255. Privileged Execution Operation Output:
main : command provided 1
main : run as user is hdp
main : requested yarn user is hdp
Getting exit code file...
Creating script paths...
Writing pid file...
Writing to tmp file /hadoop/yarn/local/nmPrivate/application_1543327888220_0001/container_e14_1543327888220_0001_01_000002/container_e14_1543327888220_0001_01_000002.pid.tmp
Writing to cgroup task files...
Creating local dirs...
Launching container...
Getting exit code file...
Creating script paths...
Full command array for failed execution:
[/usr/hdp/current/hadoop-yarn-nodemanager/bin/container-executor, hdp, hdp, 1, application_1543327888220_0001, container_e14_1543327888220_0001_01_000002, /hadoop/yarn/local/usercache/hdp/appcache/application_1543327888220_0001/container_e14_1543327888220_0001_01_000002, /hadoop/yarn/local/nmPrivate/application_1543327888220_0001/container_e14_1543327888220_0001_01_000002/launch_container.sh, /hadoop/yarn/local/nmPrivate/application_1543327888220_0001/container_e14_1543327888220_0001_01_000002/container_e14_1543327888220_0001_01_000002.tokens, /hadoop/yarn/local/nmPrivate/application_1543327888220_0001/container_e14_1543327888220_0001_01_000002/container_e14_1543327888220_0001_01_000002.pid, /hadoop/yarn/local, /hadoop/yarn/log, cgroups=none]
2018-11-27 22:13:35,921 WARN runtime.DefaultLinuxContainerRuntime (DefaultLinuxContainerRuntime.java:launchContainer(107)) - Launch container failed. Exception: org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationException: ExitCodeException exitCode=255:
at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor.executePrivilegedOperation(PrivilegedOperationExecutor.java:175)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.DefaultLinuxContainerRuntime.launchContainer(DefaultLinuxContainerRuntime.java:103)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.runtime.DelegatingLinuxContainerRuntime.launchContainer(DelegatingLinuxContainerRuntime.java:89)
at org.apache.hadoop.yarn.server.nodemanager.LinuxContainerExecutor.launchContainer(LinuxContainerExecutor.java:392)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:317)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.launcher.ContainerLaunch.call(ContainerLaunch.java:83)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:748)
Caused by: ExitCodeException exitCode=255:
at org.apache.hadoop.util.Shell.runCommand(Shell.java:933)
at org.apache.hadoop.util.Shell.run(Shell.java:844)
at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:1123)
at org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.privileged.PrivilegedOperationExecutor.executePrivilegedOperation(PrivilegedOperationExecutor.java:150)
... 9 more
There is no more log about Privilege, anybody has some idea?
Thanks in advance!
Problem resolved and the problem is submitted job itself not YARN/Privilege.
Suggestion is that you'd better try to find details in container log not resourcemanager/nodemanager log.
Hiveserver2 does not start after installing HDP 2.6.4.0-91 using cloudbreak on AWS.
Start the hiveserver2 in the Ambari UI and check the contents of /var/log/hive/hiveserver2.log.
Below is the error log.
Any help would be appreciated.
Contents of hiveserver2.log
2018-03-08 04:41:53,345 WARN [main-EventThread]: server.HiveServer2 (HiveServer2.java:process(343)) - This instance of HiveServer2 has been removed from the list of server instances available for dynamic service discovery. The last client session has ended - will shutdown now.
2018-03-08 04:41:53,347 INFO [main]: zookeeper.ZooKeeper (ZooKeeper.java:close(684)) - Session: 0x16203aad5af0040 closed
2018-03-08 04:41:53,347 INFO [main]: server.HiveServer2 (HiveServer2.java:removeServerInstanceFromZooKeeper(361)) - Server instance removed from ZooKeeper.
2018-03-08 04:41:53,348 INFO [main-EventThread]: server.HiveServer2 (HiveServer2.java:stop(405)) - Shutting down HiveServer2
2018-03-08 04:41:53,348 INFO [main-EventThread]: server.HiveServer2 (HiveServer2.java:removeServerInstanceFromZooKeeper(361)) - Server instance removed from ZooKeeper.
2018-03-08 04:41:53,348 INFO [main-EventThread]: zookeeper.ClientCnxn (ClientCnxn.java:run(524)) - EventThread shut down
2018-03-08 04:41:53,348 WARN [main]: server.HiveServer2 (HiveServer2.java:startHiveServer2(508)) - Error starting HiveServer2 on attempt 1, will retry in 60 seconds
org.apache.tez.dag.api.SessionNotRunning: TezSession has already shutdown. Application application_1520480101488_0046 failed 2 times due to AM Container for appattempt_1520480101488_0046_000002 exited with exitCode: -1000
For more detailed output, check the application tracking page: http://ip-10-0-91-7.ap-northeast-2.compute.internal:8088/cluster/app/application_1520480101488_0046 Then click on links to logs of each attempt.
Diagnostics: ExitCodeException exitCode=2: tar: Removing leading `/' from member names
tar: Skipping to next header
gzip: /hadoopfs/fs1/yarn/nodemanager/filecache/60_tmp/tmp_tez.tar.gz: invalid compressed data--format violated
tar: Exiting with failure status due to previous errors
Failing this attempt. Failing the application.
at org.apache.tez.client.TezClient.waitTillReady(TezClient.java:699)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.open(TezSessionState.java:218)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionState.open(TezSessionState.java:116)
at org.apache.hadoop.hive.ql.exec.tez.TezSessionPoolManager.startPool(TezSessionPoolManager.java:76)
at org.apache.hive.service.server.HiveServer2.startHiveServer2(HiveServer2.java:488)
at org.apache.hive.service.server.HiveServer2.access$700(HiveServer2.java:87)
at org.apache.hive.service.server.HiveServer2$StartOptionExecutor.execute(HiveServer2.java:720)
at org.apache.hive.service.server.HiveServer2.main(HiveServer2.java:593)
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 org.apache.hadoop.util.RunJar.run(RunJar.java:233)
at org.apache.hadoop.util.RunJar.main(RunJar.java:148)
I had exactly the same issue with HDP on AWS. FYI, In my case the issue was with HDP version 2.6.4.5-2. I'm going to show how I fixed using this version because it is the latest at this time.
As the error log shows the problem is with tez.tar.gz that is corrupted then YARN is unable to decompress it in the YARN container.
This tez.tar.gz file is copied from the hdfs:///hdp/apps/<hdp_version>/tez/tez.tar.gz.
To reproduce the error and confirm that this file is corrupted, you can run the following command:
sudo su
su hdfs
hdfs dfs -get /hdp/apps/2.6.4.5-2/tez.tar.gz
tar -xvzf tez.tar.gz
You will get the following error:
gzip: stdin: invalid compressed data--format violated
tar: Unexpected EOF in archive
tar: Unexpected EOF in archive
tar: Error is not recoverable: exiting now
The fix is pretty simple, you must just replace the HDFS file with the one that you have on your local file-system running the following command:
hdfs dfs -rm /hdp/apps/2.6.4.5-2/tez/tez.tar.gz
hdfs dfs -put /usr/hdp/current/tez-client/lib/tez.tar.gz /hdp/apps/2.6.4.5-2/tez/tez.tar.gz
Now restart Hive Server 2 service and done!
NOTE: If something similar happens with other services you can do the same thing. Please check the following link that has more details: https://community.hortonworks.com/articles/30096/foxing-broken-targz-and-jar-files-in-hdp-24.html
Hope this helps!
I have 4 nodes CentOS hadoop cluster. I installed cloudera manager 5.5.1.
I failed to start Hbase Master.
FATAL org.apache.hadoop.hbase.master.HMaster Unhandled exception.
Starting shutdown
.
Caused by:
org.apache.hadoop.ipc.RemoteException(org.apache.hadoop.security.AccessControlException):
Permission denied: user=hbase, access=WRITE,
inode="/":hdfs:supergroup:drwxr-xr-x
Any thoughts?
Thanks
I am getting an error Unable to open iterator for alias for a simple LOAD and DUMP operation with Pig. I already took a look at the answers at:
ERROR 1066: Unable to open iterator for alias - Pig
But they don't help me.
My environment:
OS: Windows 7
Pig version: 0.13.0
Mode: Local
It shows in the error that the exception is 'Caused by' a failure to change
permission of a file in the TMP directory. But when I checked the TMP directory, there's no such file (probably it got deleted after the command is finished?).
Logs below (with -v and -w options) :
'D:\H\HADOOP-2.6.0\bin\hadoop-config.cmd' is not recognized as an internal or external command,
operable program or batch file.
15/01/24 09:20:22 INFO pig.ExecTypeProvider: Trying ExecType : LOCAL
15/01/24 09:20:22 INFO pig.ExecTypeProvider: Picked LOCAL as the ExecType
2015-01-24 09:20:22,909 [main] INFO org.apache.pig.Main - Apache Pig version 0.13.0 (r1606446) compiled Jun 29 2014, 02:29:34
2015-01-24 09:20:22,909 [main] INFO org.apache.pig.Main - Logging error messages to: d:\Pig\pig-0.13.0\bin\
2015-01-24 09:20:24,267 [main] INFO org.apache.pig.impl.util.Utils - Default bootup file C:\Users\Venkat/.pigbootup not found
2015-01-24 09:20:24,438 [main] INFO org.apache.pig.backend.hadoop.executionengine.HExecutionEngine - Connecting to hadoop file system at: file:///
2015-01-24 09:20:26,205 [main] WARN org.apache.hadoop.util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
2015-01-24 09:20:26,236 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable to open iterator for alias a
2015-01-24 09:20:26,236 [main] ERROR org.apache.pig.tools.grunt.Grunt - org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias a
at org.apache.pig.PigServer.openIterator(PigServer.java:912)
at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:752)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:228)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:203)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:81)
at org.apache.pig.Main.run(Main.java:479)
at org.apache.pig.Main.main(Main.java:156)
Caused by: org.apache.pig.backend.datastorage.DataStorageException: ERROR 0: java.io.IOException: Failed to set permissions of path: \tmp\temp946561981 to 0700
at org.apache.pig.impl.io.FileLocalizer.relativeRoot(FileLocalizer.java:484)
at org.apache.pig.impl.io.FileLocalizer.getTemporaryPath(FileLocalizer.java:515)
at org.apache.pig.impl.io.FileLocalizer.getTemporaryPath(FileLocalizer.java:511)
at org.apache.pig.PigServer.openIterator(PigServer.java:887)
... 7 more
Caused by: java.io.IOException: Failed to set permissions of path: \tmp\temp946561981 to 0700
at org.apache.hadoop.fs.FileUtil.checkReturnValue(FileUtil.java:689)
at org.apache.hadoop.fs.FileUtil.setPermission(FileUtil.java:662)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:509)
at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:286)
at org.apache.pig.backend.hadoop.datastorage.HPath.setPermission(HPath.java:122)
at org.apache.pig.impl.io.FileLocalizer.createRelativeRoot(FileLocalizer.java:495)
at org.apache.pig.impl.io.FileLocalizer.relativeRoot(FileLocalizer.java:481)
... 10 more
Details also at logfile: D:\Pig\pig-0.13.0\bin\data-1.txt1422071424329.log
Pig Stack Trace
ERROR 1066: Unable to open iterator for alias a
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open iterator for alias a
at org.apache.pig.PigServer.openIterator(PigServer.java:912)
at org.apache.pig.tools.grunt.GruntParser.processDump(GruntParser.java:752)
at org.apache.pig.tools.pigscript.parser.PigScriptParser.parse(PigScriptParser.java:372)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:228)
at org.apache.pig.tools.grunt.GruntParser.parseStopOnError(GruntParser.java:203)
at org.apache.pig.tools.grunt.Grunt.exec(Grunt.java:81)
at org.apache.pig.Main.run(Main.java:479)
at org.apache.pig.Main.main(Main.java:156)
Caused by: org.apache.pig.backend.datastorage.DataStorageException: ERROR 0: java.io.IOException: Failed to set permissions of path: \tmp\temp946561981 to 0700
at org.apache.pig.impl.io.FileLocalizer.relativeRoot(FileLocalizer.java:484)
at org.apache.pig.impl.io.FileLocalizer.getTemporaryPath(FileLocalizer.java:515)
at org.apache.pig.impl.io.FileLocalizer.getTemporaryPath(FileLocalizer.java:511)
at org.apache.pig.PigServer.openIterator(PigServer.java:887)
... 7 more
Caused by: java.io.IOException: Failed to set permissions of path: \tmp\temp946561981 to 0700
at org.apache.hadoop.fs.FileUtil.checkReturnValue(FileUtil.java:689)
at org.apache.hadoop.fs.FileUtil.setPermission(FileUtil.java:662)
at org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:509)
at org.apache.hadoop.fs.FilterFileSystem.setPermission(FilterFileSystem.java:286)
at org.apache.pig.backend.hadoop.datastorage.HPath.setPermission(HPath.java:122)
at org.apache.pig.impl.io.FileLocalizer.createRelativeRoot(FileLocalizer.java:495)
at org.apache.pig.impl.io.FileLocalizer.relativeRoot(FileLocalizer.java:481)
... 10 more
Pig file contents:
a = LOAD 's.csv' AS (NAME:chararray,COUNTRY:chararray,YEAR:int,SPORT:chararray,GOLD:int,SILVER:int,BRONZE:int,TOTAL:int);
DUMP a;
Contents of s.csv:
Yang Yilin China 2008 Gymnastics 1 0 2 3
Leisel Jones Australia 2000 Swimming 0 2 0 2
Is there anything wrong in the syntax of the LOAD statement?
Are there any environment variables that need to be set specifically other
than JAVA and JAVA_HOME?
first check your hadoop permission status if its root change it too user.
$sudo chown -R testuser:testuser /(path of hadoop folder)
permission problem will be solve.
I hope this will work
Generally we will get this error as "ERROR org.apache.pig.tools.grunt.Grunt - ERROR 1066: Unable to open iterator for alias" due to incorrect path or not able to access the file path.
check the file location is correct or not.
check are you able to access the file.
I got this issue with hadoop namenode safemode is on.
So I did below command to OFF safemode:
sudo -u hdfs hadoop dfsadmin -safemode leave
Then it works for me.