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Re: problem of lost name-node - Hadoop - [mail # dev]
...There is also some work underway to add in HA and failover to the namenode.   You might get more success if you send your note to hdfs-dev instead of c ommon-dev.  One other thing ...
   Author: Robert Evans, 2011-09-28, 13:55
[expand - 5 more] - Re: operation of DistributedCache following manual deletion of cached files? - Hadoop - [mail # user]
...That is correct,  However, it is a bit more complicated then that.  The Tas k Tracker's in memory index of the distributed cache is keyed off of the pa th of the file and the HDFS ...
   Author: Robert Evans, 2011-09-27, 20:03
Re: Welcoming Alejandro Abdelnur as a Hadoop Committer - Hadoop - [mail # general]
...Congrats Alejandro.   On 9/26/11 11:21 AM, "Tom White"  wrote:  On behalf of the PMC, I am pleased to announce that Alejandro Abdelnur has been elected a committer in the Apac...
   Author: Robert Evans, 2011-09-26, 19:35
[expand - 1 more] - Re: many killed tasks, long execution time - Hadoop - [mail # user]
...Sofia,  Speculative execution is great so long as you are not writing data off to H DFS on the side.  If you use a normal output format it can handle putting y our output in a temp...
   Author: Robert Evans, 2011-09-23, 14:19
Re: How to get hadoop job information effectively? - Hadoop - [mail # user]
...Not that I know of.  We scrape web pages which is a horrible thing to do.   There is a JIRA to add in some web service APIs to expose this type of info rmation, but it is not going...
   Author: Robert Evans, 2011-09-21, 18:47
Re: Can we run job on some datanodes ? - Hadoop - [mail # user]
...Praveen,  If you are doing performance measurements be aware that having more datanod es then tasktrackers will impact the performance as well (Don't really know  for sure how). &n...
   Author: Robert Evans, 2011-09-21, 15:01
[expand - 1 more] - Re: Maven eclipse plugin issue - Hadoop - [mail # dev]
...Sorry that was a different page I looked at before going to the JIRA.  It said that we can manually add in the target/generated-test-source/java d irectory as a source directory with so...
   Author: Robert Evans, 2011-09-20, 14:34
[expand - 1 more] - Re: Is Hadoop the right platform for my HPC application? - Hadoop - [mail # user]
...Another option to think about is that there is a Hamster project ( MAPREDUC E-2911  ) that will a llow OpenMPI to run on a Hadoop Cluster.  It is still very preliminary and  w...
   Author: Robert Evans, 2011-09-13, 19:22
Re: Platform MapReduce - Enterprise Features - Hadoop - [mail # dev]
...Chi,  Most of these features are things that Hadoop is working on.  There is an H A branch in progress that should go into trunk relatively soon.  As far as the batch system i...
   Author: Robert Evans, 2011-09-12, 20:22
Re: JIRA attachments order - Hadoop - [mail # dev]
...Can I ask, though that we do add branch information in the patches.  Too of ten a patch is intended to apply to some branch other then trunk, and there  is no easy way to tell what...
   Author: Robert Evans, 2011-09-09, 17:32
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