Support Questions

anis016 · ‎05-30-2017

Hello,

I am trying to index a csv file after enabling kerberos.

Please note, MapReduceIndexer worked fine before using kerberos and I could index files.

My settings are as belows. Please help regarding this issue.

Command:

HADOOP_OPTS="-Djava.security.auth.login.config=/etc/solr/conf/jass.conf" \
hadoop jar /usr/lib/solr/contrib/mr/search-mr-*-job.jar org.apache.solr.hadoop.MapReduceIndexerTool \
  -D 'mapred.child.java.opts=-Xmx2048m' \
  --log4j /usr/share/doc/search-1.0.0+cdh5.10.0+0/examples/solr-nrt/log4j.properties \
  --morphline-file /home/cloudera/workspace/solr_home/morphlines/csv_morphline.conf \
  --output-dir hdfs://quickstart.cloudera:8020/user/hdfs/test_output \
  --verbose \
  --go-live \
  --zk-host quickstart.cloudera:2181/solr \
  --collection csv_collection \
  hdfs://quickstart.cloudera:8020/user/hdfs/test_input/books.cs

Jass.conf:

Client {
  com.sun.security.auth.module.Krb5LoginModule required
  useKeyTab=true
  keyTab="/etc/hadoop/conf/hdfs.keytab"
  storeKey=true
  useTicketCache=false
  debug=true
  principal="hdfs/quickstart.cloudera@CLOUDERA";
};

However, I am getting FileNotFoundException as below.

2017-05-30 05:14:36,949 WARN org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService: Could not process job files
java.io.FileNotFoundException: File does not exist: /user/hdfs/.staging/job_1495787732900_0011/job_1495787732900_0011.summary
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:66)
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:56)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:2007)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1977)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1890)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:572)
	at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getBlockLocations(AuthorizationProviderProxyClientProtocol.java:89)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:365)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2216)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2212)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1796)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2210)

	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.ipc.RemoteException.instantiateException(RemoteException.java:106)
	at org.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:73)
	at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:1281)
	at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1266)
	at org.apache.hadoop.hdfs.DFSClient.getLocatedBlocks(DFSClient.java:1254)
	at org.apache.hadoop.hdfs.DFSInputStream.fetchLocatedBlocksAndGetLastBlockLength(DFSInputStream.java:305)
	at org.apache.hadoop.hdfs.DFSInputStream.openInfo(DFSInputStream.java:271)
	at org.apache.hadoop.hdfs.DFSInputStream.<init>(DFSInputStream.java:263)
	at org.apache.hadoop.hdfs.DFSClient.open(DFSClient.java:1585)
	at org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:326)
	at org.apache.hadoop.hdfs.DistributedFileSystem$4.doCall(DistributedFileSystem.java:322)
	at org.apache.hadoop.fs.FileSystemLinkResolver.resolve(FileSystemLinkResolver.java:81)
	at org.apache.hadoop.hdfs.DistributedFileSystem.open(DistributedFileSystem.java:322)
	at org.apache.hadoop.fs.FileSystem.open(FileSystem.java:783)
	at org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService$FlagFileHandler.buildJobIndexInfo(KilledHistoryService.java:223)
	at org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService$FlagFileHandler.access$200(KilledHistoryService.java:85)
	at org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService$FlagFileHandler$1.run(KilledHistoryService.java:133)
	at org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService$FlagFileHandler$1.run(KilledHistoryService.java:125)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1796)
	at org.apache.hadoop.mapreduce.v2.hs.KilledHistoryService$FlagFileHandler.run(KilledHistoryService.java:125)
	at java.util.TimerThread.mainLoop(Timer.java:555)
	at java.util.TimerThread.run(Timer.java:505)
Caused by: org.apache.hadoop.ipc.RemoteException(java.io.FileNotFoundException): File does not exist: /user/hdfs/.staging/job_1495787732900_0011/job_1495787732900_0011.summary
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:66)
	at org.apache.hadoop.hdfs.server.namenode.INodeFile.valueOf(INodeFile.java:56)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:2007)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1977)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1890)
	at org.apache.hadoop.hdfs.server.namenode.NameNodeRpcServer.getBlockLocations(NameNodeRpcServer.java:572)
	at org.apache.hadoop.hdfs.server.namenode.AuthorizationProviderProxyClientProtocol.getBlockLocations(AuthorizationProviderProxyClientProtocol.java:89)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB.getBlockLocations(ClientNamenodeProtocolServerSideTranslatorPB.java:365)
	at org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos$ClientNamenodeProtocol$2.callBlockingMethod(ClientNamenodeProtocolProtos.java)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Server$ProtoBufRpcInvoker.call(ProtobufRpcEngine.java:617)
	at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1073)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2216)
	at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:2212)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1796)
	at org.apache.hadoop.ipc.Server$Handler.run(Server.java:2210)

	at org.apache.hadoop.ipc.Client.call(Client.java:1472)
	at org.apache.hadoop.ipc.Client.call(Client.java:1409)
	at org.apache.hadoop.ipc.ProtobufRpcEngine$Invoker.invoke(ProtobufRpcEngine.java:230)
	at com.sun.proxy.$Proxy17.getBlockLocations(Unknown Source)
	at org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolTranslatorPB.getBlockLocations(ClientNamenodeProtocolTranslatorPB.java:256)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:606)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:256)
	at org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:104)
	at com.sun.proxy.$Proxy18.getBlockLocations(Unknown Source)
	at org.apache.hadoop.hdfs.DFSClient.callGetBlockLocations(DFSClient.java:1279)
	... 21 more

anis016 · ‎06-05-2017

I was able to solve this problem. I was getting the concept wrong. So, what I did was --

1. I created keytab file for my current user i.e "cloudera"

2. The Jaas.conf should have that keytab, not the hdfs keytab.

3. I had to add this user, hdfs user in the yarn allowed hosts through CM. Also, I added solr user too there.

4. kinit the cloudera user

5. Put the required files in the /user/cloudera directory in hdfs.

6. Run the job.

View solution in original post

saranvisa · ‎05-30-2017

@anis016

I have a question on your command.

Can we execute "hadoop jar <jar>" command and environment variable setup command (HADOOP_OPTS) as a single command? I never tried that before... not sure I am missing something here

Becuase usually environement variable setup command will be prefixed with the keyword 'export' ... I don't know this will fix your issue but you can try to execute them separately as mentioned below.. it may help

export HADOOP_OPTS="-Djava.security.auth.login.config=/etc/solr/conf/jass.conf"

hadoop jar /usr/lib/solr/contrib/mr/search-mr-*-job.jar org.apache.solr.hadoop.MapReduceIndexerTool \
  -D 'mapred.child.java.opts=-Xmx2048m' \
  --log4j /usr/share/doc/search-1.0.0+cdh5.10.0+0/examples/solr-nrt/log4j.properties \
  --morphline-file /home/cloudera/workspace/solr_home/morphlines/csv_morphline.conf \
  --output-dir hdfs://quickstart.cloudera:8020/user/hdfs/test_output \
  --verbose \
  --go-live \
  --zk-host quickstart.cloudera:2181/solr \
  --collection csv_collection \
  hdfs://quickstart.cloudera:8020/user/hdfs/test_input/books.cs

anis016 · ‎05-31-2017

Hello @saranvisa

Thanks for your reply. I was following this link: https://www.cloudera.com/documentation/enterprise/latest/topics/search_using_kerberos.html

The MapReduceIndexerTool
The MapReduceIndexerTool uses SolrJ to pass the JAAS configuration file. Using the MapReduceIndexerTool in a secure environment requires the use of the HADOOP_OPTS variable to specify the JAAS configuration file. For example, you might issue a command such as the following:
```
HADOOP_OPTS="-Djava.security.auth.login.config=/home/user/jaas.conf" \
hadoop jar MapReduceIndexerTool
```
BTW, I have a confusion about "jaas.conf" file. What is my understanding is that this "jaas.conf", is for the hdfs.keytab looks like below:
```
Client {
  com.sun.security.auth.module.Krb5LoginModule required
  useKeyTab=true
  keyTab="/etc/hadoop/conf/hdfs.keytab"
  storeKey=true
  useTicketCache=false
  debug=true
  principal="hdfs/quickstart.cloudera@CLOUDERA";
};
```
is my understadning correct ?
-- Thanks

anis016 · ‎06-05-2017