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Re: how do i force replication? - Hadoop - [mail # user]
...What is your configured replication level? (dfs.replication in hdfs-site.xml or hdfs-default.xml)  One can specify replication when creating a file, but if you used put it should've tak...
   Author: Boris Shkolnik, 2009-11-19, 18:17
Re: What's different of 1)namenode metadata 2)image and 3)edit logs? - Hadoop - [mail # general]
...NameNode metadata - is in memory data structures describing file system structure (directories, files, and file's blocks).  NameNode image is on-disk representation of the metadata. (fs...
   Author: Boris Shkolnik, 2009-11-16, 22:20
Re: using files in local file system - Hadoop - [mail # user]
...When you create FileSystem object you may specify that you want a LocalFileSystem. That will give you access to local files.  (e.g. FileContext.GetLocalFSFileContext())  Boris. &nb...
   Author: Boris Shkolnik, 2009-11-09, 22:09
Re: newbie question - error with replication - Hadoop - [mail # user]
...Make sure you have at least one datanode running. Look at the data node log file. (logs/*-datanode-*.log)  Boris.   On 11/9/09 7:15 AM, "Raymond Jennings III"  wrote:  ...
   Author: Boris Shkolnik, 2009-11-09, 22:02
Re: Can we configure two or more datanode under pseudo-distributed mode? - Hadoop - [mail # user]
...You can run multiple data nodes on the same machine. You should create a separate config directory for each dn. The following stuff needs to be created hdfs-site.xml Pid/log/data/tmp dirs lo...
   Author: Boris Shkolnik, 2009-09-25, 17:19
Re: Decommissioning Individual Disks - Hadoop - [mail # user]
...The JIRA is committed already. So loosing a directory will not stop the datanode anymore. If directory shows up later again it will not be added automatically.   On 9/11/09 10:56 AM, "E...
   Author: Boris Shkolnik, 2009-09-14, 17:20
Re: DistCp - NoClassDefFoundError - Hadoop - [mail # user]
...After split Distcp belongs to hadoop-mapreduce. Make sure hadoop-mapred-tools-$VER-dev.jar is in your classpath.  Boris.   On 8/31/09 2:19 PM, "Kevin Peterson"  wrote:  ...
   Author: Boris Shkolnik, 2009-09-01, 18:22
Re: Getting free space percentage on DFS - Hadoop - [mail # user]
...For JMX you can also look at JMXGet.java class. You can use this object to get the data thru JMX.  Boris  On 8/24/09 1:27 AM, "Stas Oskin"  wrote:  ...
   Author: Boris Shkolnik, 2009-08-25, 23:33
Re: Datanode-Failure..! - Hadoop - [mail # user]
...Did you check if you can create files in this directory?  Boris.   On 8/18/09 1:56 AM, "Sugandha Naolekar"  wrote:  ...
   Author: Boris Shkolnik, 2009-08-18, 18:20
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