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Re: hdfs - get file block path for a datanode - Hadoop - [mail # user]
...hadoop fsck  -files -blocks -locationsOn Mon, Apr 14, 2014 at 4:43 PM, Alexandros Papadopoulos <[EMAIL PROTECTED]> wrote: ...
   Author: Peyman Mohajerian, 2014-04-14, 21:05
Re: how can i archive old data in HDFS? - Hadoop - [mail # user]
...There is: http://hadoop.apache.org/docs/r1.2.1/hadoop_archives.htmlBut not sure if it compresses the data or not.On Thu, Apr 10, 2014 at 9:57 PM, Stanley Shi  wrote: ...
   Author: Peyman Mohajerian, 2014-04-11, 13:10
Re: Import only Delta from SDL DB using Sqoop - Hadoop - [mail # general]
...In the same document/site it talks about 'saved jobs' basically aplaceholder for the last value. You can of course store the last value onyour own and pass it each time.On Wed, Apr 9, 2014 a...
   Author: Peyman Mohajerian, 2014-04-09, 20:14
Re: A non-empty file's size is reported as 0 - Hadoop - [mail # user]
...If you didn't close the file correctly then NameNode wouldn't be notifiedof the final size of the file. The file size is meta-data coming fromNameNode.On Tue, Apr 8, 2014 at 4:35 AM, Tao Xia...
   Author: Peyman Mohajerian, 2014-04-08, 13:18
Re: recommended block replication for small cluster - Hadoop - [mail # user]
...The reason for replication also has to do with data locality in a largercluster for running a map-reduce jobs. You can reduce the replication,that's why it's a configurable parameter.On Thu,...
   Author: Peyman Mohajerian, 2014-04-03, 13:13
Re: Job Tracker not running, Permission denied - Hadoop - [mail # user]
...Maybe you just have to add 'mapred' user to the group that owns the 'hdfs'root directory, it seems the group name is called: 'hdfs'.On Sat, Feb 15, 2014 at 9:56 AM, Panshul Whisper wrote:&nb...
   Author: Peyman Mohajerian, 2014-02-15, 19:14
Re: Add few record(s) to a Hive table or a HDFS file on a daily basis - Hadoop - [mail # user]
...The staging table is typically defined as external hive table, data isloaded directly on HDFS and staging table therefore is able to read thatdata directly from HDFS and the transfer it to H...
   Author: Peyman Mohajerian, 2014-02-10, 03:48
Re: BlockMissingException reading HDFS file, but the block exists and fsck shows OK - Hadoop - [mail # user]
...maybe its inode exhaustion:'df -i' command can tell you more.On Mon, Jan 27, 2014 at 12:00 PM, John Lilley wrote: ...
   Author: Peyman Mohajerian, 2014-01-29, 02:20
Re: Suggestion technology/design on this usecase - Hadoop - [mail # user]
...This is what a friend of mine that knows elastic search had to say aboutthis:o   Their tagcombinations are no different than say a category or similargrouping for datao   A search ...
   Author: Peyman Mohajerian, 2014-01-28, 18:35
Re: Best practice for storage of data that changes - Hadoop - [mail # user]
...If you need to run fast queries on your 'Account/User data' then you got to use a nosql solution. If you only constraint is frequent updates you may still manage to keep the data in hdfs, ju...
   Author: Peyman Mohajerian, 2012-11-24, 22:32
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