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Re: MapReduce on Local files - HDFS - [mail # user]
...For FileInputFormat, start with "_" is hidden file by default. you can write a custom PathFilter, and pass it to the InputFormat.   On Wed, Apr 3, 2013 at 5:58 PM, Harsh J  wrote: ...
   Author: Azuryy Yu, 2013-04-03, 10:06
[expand - 1 more] - Re: Provide context to map function - HDFS - [mail # user]
...I supposed your input splits are FileSplit, if not, you need to:  InputSplit split = context.getInputSplit();  if (split instanceof FileSplit){   Path path = ((FileSplit)split...
   Author: Azuryy Yu, 2013-04-02, 04:06
Re: are we able to decommission multi nodes at one time? - HDFS - [mail # user]
...I can translate it to native English: how many nodes you want to decommission?   On Tue, Apr 2, 2013 at 11:01 AM, Yanbo Liang  wrote:  ...
   Author: Azuryy Yu, 2013-04-02, 03:14
Re: Why big block size for HDFS. - HDFS - [mail # user]
...When you seek to a position within a HDFS file, you are not seek from the start of the first block and then one by one.  Actually DFSClient can skip some blocks until find one block, wh...
   Author: Azuryy Yu, 2013-04-01, 01:49
Exception with QJM HDFS HA - HDFS - [mail # dev]
...Hi All,  I configured HDFS Ha using source code from trunk r1463074.  I got an exception as follows when I put a file to the HDFS.  13/04/01 09:33:45 WARN retry.RetryInvocatio...
   Author: Azuryy Yu, 2013-04-01, 01:43
Re: FileSystem Error - HDFS - [mail # user]
...using  haddop jar, instead of java -jar.  hadoop script can set a proper classpath for you. On Mar 29, 2013 11:55 PM, "Cyril Bogus"  wrote:  ...
   Author: Azuryy Yu, 2013-03-29, 23:56
[expand - 1 more] - Re: QIM failover callback patch - HDFS - [mail # user]
...Sorry!  Todd has been reviewed it.   On Fri, Mar 29, 2013 at 11:40 AM, Azuryy Yu  wrote:  ...
   Author: Azuryy Yu, 2013-03-29, 03:51
Re: Any answer ? Candidate application for map reduce - HDFS - [mail # user]
...for your reqeirement, its just write a customized MR inputformat and outputformat based on FileInputFormat. On Mar 25, 2013 1:48 PM, "AMARNATH, Balachandar"  wrote:  ...
   Author: Azuryy Yu, 2013-03-26, 04:51
Re: Hadoop-2.x native libraries - HDFS - [mail # user]
...Its too complicated. because Hadoopv2 is wire compatable, so MRv1 should keep old RPC protocol, you can compile only common and HDFS firstly from hadoopv2, then add to MRv1 classpath, fix th...
   Author: Azuryy Yu, 2013-03-26, 04:40
Re: For a new installation: use the BackupNode or the CheckPointNode? - HDFS - [mail # user]
...IMO, if you run HA, then SSN is not necessary. On Mar 24, 2013 12:40 PM, "Harsh J"  wrote:  ...
   Author: Azuryy Yu, 2013-03-24, 04:59
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