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namenode is not formatted in hadoop

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In normal account.

I created some directories.

/usr/local/hadoop-2.7.3/data/dfs/namenode
/usr/local/hadoop-2.7.3/data/dfs/namesecondary
/usr/local/hadoop-2.7.3/data/dfs/datanode
/usr/local/hadoop-2.7.3/data/yarn/nm-local-dir
/usr/local/hadoop-2.7.3/data/yarn/system/rmstore

And typed some commands

bin/hdfs namenode –format
sudo sbin/start-all.sh
jps

Then

In the normal account, I could see only jps.

In the root account, I could see Jps, DataNode, SecondaryNameNode, NodeManager and ResourceManager.

I have 2 questions.

  1. Why can I see only jps in normal account?
  2. Why is namenode not started?

Thanks for reading. And if you help me, I will appreciate you.

namenode log file

2017-04-06 01:16:15,217 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, INT]
2017-04-06 01:16:15,220 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: createNameNode []
2017-04-06 01:16:15,680 INFO org.apache.hadoop.metrics2.impl.MetricsConfig: loaded properties from hadoop-metrics2.properties
2017-04-06 01:16:15,843 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Scheduled snapshot period at 10 second(s).
2017-04-06 01:16:15,843 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system started
2017-04-06 01:16:15,845 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: fs.defaultFS is hdfs://localhost:9010
2017-04-06 01:16:15,846 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Clients are to use localhost:9010 to access this namenode/service.
2017-04-06 01:16:16,070 INFO org.apache.hadoop.hdfs.DFSUtil: Starting Web-server for hdfs at: http://localhost:50070
2017-04-06 01:16:16,152 INFO org.mortbay.log: Logging to org.slf4j.impl.Log4jLoggerAdapter(org.mortbay.log) via org.mortbay.log.Slf4jLog
2017-04-06 01:16:16,158 INFO org.apache.hadoop.security.authentication.server.AuthenticationFilter: Unable to initialize FileSignerSecretProvider, falling back to use random secrets.
2017-04-06 01:16:16,165 INFO org.apache.hadoop.http.HttpRequestLog: Http request log for http.requests.namenode is not defined
2017-04-06 01:16:16,169 INFO org.apache.hadoop.http.HttpServer2: Added global filter 'safety' (class=org.apache.hadoop.http.HttpServer2$QuotingInputFilter)
2017-04-06 01:16:16,171 INFO org.apache.hadoop.http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context hdfs
2017-04-06 01:16:16,171 INFO org.apache.hadoop.http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context logs
2017-04-06 01:16:16,171 INFO org.apache.hadoop.http.HttpServer2: Added filter static_user_filter (class=org.apache.hadoop.http.lib.StaticUserWebFilter$StaticUserFilter) to context static
2017-04-06 01:16:16,300 INFO org.apache.hadoop.http.HttpServer2: Added filter 'org.apache.hadoop.hdfs.web.AuthFilter' (class=org.apache.hadoop.hdfs.web.AuthFilter)
2017-04-06 01:16:16,303 INFO org.apache.hadoop.http.HttpServer2: addJerseyResourcePackage: packageName=org.apache.hadoop.hdfs.server.namenode.web.resources;org.apache.hadoop.hdfs.web.resources, pathSpec=/webhdfs/v1/*
2017-04-06 01:16:16,330 INFO org.apache.hadoop.http.HttpServer2: Jetty bound to port 50070
2017-04-06 01:16:16,330 INFO org.mortbay.log: jetty-6.1.26
2017-04-06 01:16:16,581 INFO org.mortbay.log: Started HttpServer2$SelectChannelConnectorWithSafeStartup@localhost:50070
2017-04-06 01:16:16,612 WARN org.apache.hadoop.hdfs.server.common.Util: Path /usr/local/hadoop-2.7.3/data/dfs/namenode should be specified as a URI in configuration files. Please update hdfs configuration.
2017-04-06 01:16:16,612 WARN org.apache.hadoop.hdfs.server.common.Util: Path /usr/local/hadoop-2.7.3/data/dfs/namenode should be specified as a URI in configuration files. Please update hdfs configuration.
2017-04-06 01:16:16,613 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Only one image storage directory (dfs.namenode.name.dir) configured. Beware of data loss due to lack of redundant storage directories!
2017-04-06 01:16:16,613 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Only one namespace edits storage directory (dfs.namenode.edits.dir) configured. Beware of data loss due to lack of redundant storage directories!
2017-04-06 01:16:16,617 WARN org.apache.hadoop.hdfs.server.common.Util: Path /usr/local/hadoop-2.7.3/data/dfs/namenode should be specified as a URI in configuration files. Please update hdfs configuration.
2017-04-06 01:16:16,617 WARN org.apache.hadoop.hdfs.server.common.Util: Path /usr/local/hadoop-2.7.3/data/dfs/namenode should be specified as a URI in configuration files. Please update hdfs configuration.
2017-04-06 01:16:16,639 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: No KeyProvider found.
2017-04-06 01:16:16,639 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsLock is fair:true
2017-04-06 01:16:16,668 INFO org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager: dfs.block.invalidate.limit=1000
2017-04-06 01:16:16,668 INFO org.apache.hadoop.hdfs.server.blockmanagement.DatanodeManager: dfs.namenode.datanode.registration.ip-hostname-check=true
2017-04-06 01:16:16,669 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: dfs.namenode.startup.delay.block.deletion.sec is set to 000:00:00:00.000
2017-04-06 01:16:16,669 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: The block deletion will start around 2017 Apr 06 01:16:16
2017-04-06 01:16:16,670 INFO org.apache.hadoop.util.GSet: Computing capacity for map BlocksMap
2017-04-06 01:16:16,670 INFO org.apache.hadoop.util.GSet: VM type       = 64-bit
2017-04-06 01:16:16,671 INFO org.apache.hadoop.util.GSet: 2.0% max memory 966.7 MB = 19.3 MB
2017-04-06 01:16:16,671 INFO org.apache.hadoop.util.GSet: capacity      = 2^21 = 2097152 entries
2017-04-06 01:16:16,690 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: dfs.block.access.token.enable=false
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: defaultReplication         = 1
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: maxReplication             = 512
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: minReplication             = 1
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: maxReplicationStreams      = 2
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: replicationRecheckInterval = 3000
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: encryptDataTransfer        = false
2017-04-06 01:16:16,691 INFO org.apache.hadoop.hdfs.server.blockmanagement.BlockManager: maxNumBlocksToLog          = 1000
2017-04-06 01:16:16,706 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: fsOwner             = root (auth:SIMPLE)
2017-04-06 01:16:16,707 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: supergroup          = supergroup
2017-04-06 01:16:16,707 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: isPermissionEnabled = true
2017-04-06 01:16:16,707 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: HA Enabled: false
2017-04-06 01:16:16,708 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Append Enabled: true
2017-04-06 01:16:16,963 INFO org.apache.hadoop.util.GSet: Computing capacity for map INodeMap
2017-04-06 01:16:16,963 INFO org.apache.hadoop.util.GSet: VM type       = 64-bit
2017-04-06 01:16:16,970 INFO org.apache.hadoop.util.GSet: 1.0% max memory 966.7 MB = 9.7 MB
2017-04-06 01:16:16,970 INFO org.apache.hadoop.util.GSet: capacity      = 2^20 = 1048576 entries
2017-04-06 01:16:16,971 INFO org.apache.hadoop.hdfs.server.namenode.FSDirectory: ACLs enabled? false
2017-04-06 01:16:16,971 INFO org.apache.hadoop.hdfs.server.namenode.FSDirectory: XAttrs enabled? true
2017-04-06 01:16:16,971 INFO org.apache.hadoop.hdfs.server.namenode.FSDirectory: Maximum size of an xattr: 16384
2017-04-06 01:16:16,971 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: Caching file names occuring more than 10 times
2017-04-06 01:16:16,977 INFO org.apache.hadoop.util.GSet: Computing capacity for map cachedBlocks
2017-04-06 01:16:16,977 INFO org.apache.hadoop.util.GSet: VM type       = 64-bit
2017-04-06 01:16:16,977 INFO org.apache.hadoop.util.GSet: 0.25% max memory 966.7 MB = 2.4 MB
2017-04-06 01:16:16,977 INFO org.apache.hadoop.util.GSet: capacity      = 2^18 = 262144 entries
2017-04-06 01:16:16,978 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.namenode.safemode.threshold-pct = 0.9990000128746033
2017-04-06 01:16:16,978 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.namenode.safemode.min.datanodes = 0
2017-04-06 01:16:16,978 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: dfs.namenode.safemode.extension     = 30000
2017-04-06 01:16:16,980 INFO org.apache.hadoop.hdfs.server.namenode.top.metrics.TopMetrics: NNTop conf: dfs.namenode.top.window.num.buckets = 10
2017-04-06 01:16:16,980 INFO org.apache.hadoop.hdfs.server.namenode.top.metrics.TopMetrics: NNTop conf: dfs.namenode.top.num.users = 10
2017-04-06 01:16:16,980 INFO org.apache.hadoop.hdfs.server.namenode.top.metrics.TopMetrics: NNTop conf: dfs.namenode.top.windows.minutes = 1,5,25
2017-04-06 01:16:16,983 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Retry cache on namenode is enabled
2017-04-06 01:16:16,983 INFO org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Retry cache will use 0.03 of total heap and retry cache entry expiry time is 600000 millis
2017-04-06 01:16:16,984 INFO org.apache.hadoop.util.GSet: Computing capacity for map NameNodeRetryCache
2017-04-06 01:16:16,984 INFO org.apache.hadoop.util.GSet: VM type       = 64-bit
2017-04-06 01:16:16,984 INFO org.apache.hadoop.util.GSet: 0.029999999329447746% max memory 966.7 MB = 297.0 KB
2017-04-06 01:16:16,984 INFO org.apache.hadoop.util.GSet: capacity      = 2^15 = 32768 entries
2017-04-06 01:16:17,005 INFO org.apache.hadoop.hdfs.server.common.Storage: Lock on /usr/local/hadoop-2.7.3/data/dfs/namenode/in_use.lock acquired by nodename 5360@localhost
2017-04-06 01:16:17,007 WARN org.apache.hadoop.hdfs.server.namenode.FSNamesystem: Encountered exception loading fsimage
java.io.IOException: NameNode is not formatted.
	at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:225)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:975)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:681)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:585)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:645)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:812)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:796)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1493)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1559)
2017-04-06 01:16:17,032 INFO org.mortbay.log: Stopped HttpServer2$SelectChannelConnectorWithSafeStartup@localhost:50070
2017-04-06 01:16:17,035 WARN org.apache.hadoop.http.HttpServer2: HttpServer Acceptor: isRunning is false. Rechecking.
2017-04-06 01:16:17,035 WARN org.apache.hadoop.http.HttpServer2: HttpServer Acceptor: isRunning is false
2017-04-06 01:16:17,035 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping NameNode metrics system...
2017-04-06 01:16:17,035 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system stopped.
2017-04-06 01:16:17,035 INFO org.apache.hadoop.metrics2.impl.MetricsSystemImpl: NameNode metrics system shutdown complete.
2017-04-06 01:16:17,035 ERROR org.apache.hadoop.hdfs.server.namenode.NameNode: Failed to start namenode.
java.io.IOException: NameNode is not formatted.
	at org.apache.hadoop.hdfs.server.namenode.FSImage.recoverTransitionRead(FSImage.java:225)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFSImage(FSNamesystem.java:975)
	at org.apache.hadoop.hdfs.server.namenode.FSNamesystem.loadFromDisk(FSNamesystem.java:681)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.loadNamesystem(NameNode.java:585)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.initialize(NameNode.java:645)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:812)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.<init>(NameNode.java:796)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.createNameNode(NameNode.java:1493)
	at org.apache.hadoop.hdfs.server.namenode.NameNode.main(NameNode.java:1559)
2017-04-06 01:16:17,036 INFO org.apache.hadoop.util.ExitUtil: Exiting with status 1
2017-04-06 01:16:17,040 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: SHUTDOWN_MSG:
like image 607
yes89929 Avatar asked Apr 05 '17 17:04

yes89929

People also ask

What does Hadoop NameNode format do?

Hadoop NameNode is the centralized place of an HDFS file system which keeps the directory tree of all files in the file system, and it tracks where across the cluster the file data is kept. In short, it keeps the metadata related to datanodes.

What is NameNode in Hadoop?

The NameNode is the centerpiece of an HDFS file system. It keeps the directory tree of all files in the file system, and tracks where across the cluster the file data is kept. It does not store the data of these files itself.

Why is NameNode in safe mode?

If one of the blocks in the file is only replicated once in the cluster then the minimum replication factor for this file is not met. This also means the file is not in good health. Namenode will stay in safemode if the minimum replication factor is not met for more number of blocks.

1 Answers

Why can I see only jps in normal account?

As you have started the daemons with sudo, root user owns the processes. The command jps reports only the JVMs for which it has the access permissions. The normal account has no access for the processes owned by root.

Why is namenode not started?

java.io.IOException: NameNode is not formatted.

Namenode is not yet formatted. It is possible that you have missed to provide Y when the format command prompted for (Y/N).

like image 77
franklinsijo Avatar answered Sep 24 '22 10:09

franklinsijo
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