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[HADOOP-5144] manual way of turning on restore of failed storage replicas for namenode - Hadoop - [issue]
...when HADOOP-4885 is implemented and committed we will automatic facility to restore failed storage replicas for namenode. Currently it is controlled by configuration file.But since it is qui...
http://issues.apache.org/jira/browse/HADOOP-5144    Author: Boris Shkolnik, 2013-08-30, 15:45
[HADOOP-7207] fs member of FSShell is not really needed - Hadoop - [issue]
...FileSystem object should be created on demand when needed in FSShell, instead of always creating one that connects to the default FileSystem.It will also solve a problem of connecting to non...
http://issues.apache.org/jira/browse/HADOOP-7207    Author: Boris Shkolnik, 2012-11-19, 17:45
[HADOOP-4885] Try to restore failed replicas of Name Node storage (at checkpoint time) - Hadoop - [issue]
http://issues.apache.org/jira/browse/HADOOP-4885    Author: Boris Shkolnik, 2012-10-15, 17:33
Re: Reason of Formatting Namenode - Hadoop - [mail # user]
...On the first run you want namenode to initialize its directories (where it store VERSION file, fsimage and edits). On the subsequent formats - you are making sure you have a new EMPTY file s...
   Author: Boris Shkolnik, 2011-03-10, 23:23
Re: Need Help Building Hadoop from source - Hadoop - [mail # user]
...Danie, You need to force ivy to pick up common jar from your local repository. Otherwise it downloads from the maven.org. Try this: 1. build hadoop-common.  2. 'ant mvn-install'   ...
   Author: Boris Shkolnik, 2011-03-08, 22:22
Re: How to change logging from DRFA to RFA? Is it a good idea? - Hadoop - [mail # user]
...log4j.appender.RFA=org.apache.log4j.RollingFileAppender log4j.appender.RFA.File=${hadoop.log.dir}/${hadoop.log.file}  log4j.appender.RFA.MaxFileSize=1MB log4j.appender.RFA.MaxBackupInde...
   Author: Boris Shkolnik, 2010-09-28, 00:28
Re: How to recover a namenode? - Hadoop - [mail # user]
...You may want to check importcheckpoint option too http://hadoop.apache.org/hdfs/docs/current/hdfs_user_guide.html#Import+Chec kpoint  Boris.  On 9/17/10 1:36 AM, "ChingShen"  ...
   Author: Boris Shkolnik, 2010-09-22, 00:29
Re: Java run-time error while executing my application - unable to find the files on the HDFS - Hadoop - [mail # user]
...Bharath, One thing -  Will result in "hdfs://192.168.1.1:9000/user/sam/input1.txt"  Second-  Can you please paste code that opens the file? Which method are you using?  O...
   Author: Boris Shkolnik, 2010-06-10, 21:03
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
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