I am using Rancher for manage an environment , I am using Hadoop + Yarn (Experimental) for flink and zookeeper in rancher .
I am trying to configure the hdfs on the flink-conf.yaml.
This is the changes that I made in connection to Hdfs :
fs.hdfs.hadoopconf: /etc/hadoop
recovery.zookeeper.storageDir: hdfs://:8020/flink/recovery
state.backend.fs.checkpointdir: hdfs://:8020/flink/checkpoints
And I get an error that say that :
2016-09-06 14:10:44,965 WARN org.apache.hadoop.util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
What I did wrong ?
Best regards
Related
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
21/11/02 12:09:01 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
21/11/02 12:09:02 ERROR SparkContext: Error initializing SparkContext.
java.lang.reflect.InvocationTargetException
21/11/02 12:09:01 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
21/11/02 12:09:02 ERROR SparkContext: Error initializing SparkContext.
java.lang.reflect.InvocationTargetExceptionenter code here
I installed hadoop on my mac and tried to start it using start-dfs.sh. However, I kept getting the Warning message: WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable. Any suggestions on what files to modify?
Ms-MacBook-Pro% ./start-dfs.sh
Starting namenodes on [localhost]
Starting datanodes
localhost: datanode is running as process 48267. Stop it first.
Starting secondary namenodes [Ms-MacBook-Pro.local]
Ms-MacBook-Pro.local: secondarynamenode is running as process 48390. Stop it first.
2019-08-31 22:39:06,151 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
I'm using mac and java version:
$java -version
java version "1.8.0_111"
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.111-b14, mixed mode)
followed this link: https://dtflaneur.wordpress.com/2015/10/02/installing-hadoop-on-mac-osx-el-capitan/
I first brew install hadoop, config ssh connection and xml files as required, and
start-dfs.sh
start-yarn.sh
The screen output is like this:
$start-dfs.sh
17/05/06 09:58:32 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: namenode running as process 74213. Stop it first.
localhost: starting datanode, logging to /usr/local/Cellar/hadoop/2.7.3/libexec/logs/hadoop-x-datanode-xdeMacBook-Pro.local.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: secondarynamenode running as process 74417. Stop it first.
17/05/06 09:58:39 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
$start-dfs.sh
17/05/06 09:58:32 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: namenode running as process 74213. Stop it first.
localhost: starting datanode, logging to /usr/local/Cellar/hadoop/2.7.3/libexec/logs/hadoop-x-datanode-xdeMacBook-Pro.local.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: secondarynamenode running as process 74417. Stop it first.
17/05/06 09:58:39 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Then using jps I cannot see "DataNode" and "ResourceManager". I suppose DataNode is hdfs module and ResourceManager is yarn module:
$jps
74417 SecondaryNameNode
75120 Jps
74213 NameNode
74539 ResourceManager
74637 NodeManager
I can list hdfs files:
$hdfs dfs -ls /
17/05/06 09:58:59 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Found 1 items
drwxr-xr-x - x supergroup 0 2017-05-05 23:50 /user
But running the pi examples throws exception:
$hadoop jar /usr/local/Cellar/hadoop/2.7.3/libexec/share/hadoop/mapreduce/hadoop-mapreduce-examples-2.7.3.jar pi 2 5
Number of Maps = 2
Samples per Map = 5
17/05/06 10:19:48 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/05/06 10:19:49 WARN hdfs.DFSClient: DataStreamer Exception
org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /user/x/QuasiMonteCarlo_1494037188550_135794067/in/part0 could only be replicated to 0 nodes instead of minReplication (=1). There are 0 datanode(s) running and no node(s) are excluded in this operation.
I wonder if I missed any configuation, how can I make sure that they run successfully, and how to check or trouble shoot possible failure reasons?
Thanks.
I am too in learning phase yet. This error comes when there is no datanode available to read/write.
You can check Resource Manager using this URL: http://localhost:50070
Is there any datanode running or not.
For trouble shooting you can check logs generated under installation directory of hadoop . If you can share that logs i can try to help.
Am trying to install Hortonworks Hadoop single node cluster. I am able to start namenode and secondary namenode, but datanode failed with the following error. How do I solve this issue?
2014-04-04 18:22:49,975 FATAL datanode.DataNode (DataNode.java:secureMain(1841)) - Exception in secureMain
java.lang.RuntimeException: Although a UNIX domain socket path is configured as /var/lib/hadoop-hdfs/dn_socket, we cannot start a localDataXceiverServer because libhadoop cannot be loaded."
See Native Libraries Guide. Make sure libhadoop.so is available in $HADOOP_HOME\bin. Look into the logs for this message:
INFO util.NativeCodeLoader - Loaded the native-hadoop library
If instead you find
INFO util.NativeCodeLoader - Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
then it means the libhadoop.so is not available, and you'll have to investigate why. Alternatively you can turn off HDFS shortcircuit if you wish, or enable the legacy short-circuit instead using dfs.client.use.legacy.blockreader.local, to remove the libhadoop dependency. But I reckon would be better to find out what's the problem with your library.
Make sure you read and understand the articles linked before asking further questions.
I got the following WARNs from ARM server:
13/06/10 01:31:06 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
13/06/10 01:31:06 WARN snappy.LoadSnappy: Snappy native library not loaded
But I don't get these WANRs in x86 server. Is Snappy code coming with Hadoop package but only supporting x86?
From http://code.google.com/p/snappy/source/browse/trunk/README, I see snappy codec is optimized for x86 so I am guessing it is not loaded in non x86 server in Hadoop?