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Re: Why do reads take as long as replicated writes? - HDFS - [mail # dev]
...I strongly suggest benchmarking a modern version of Hadoop rather thanHadoop 1.x.  The native CRC stuff from HDFS-3528 greatly reduces CPUconsumption on the read path.  I wrote abo...
   Author: Colin McCabe, 2014-11-10, 18:54
[expand - 1 more] - Re: builds failing on H9 with "cannot access java.lang.Runnable" - HDFS - [mail # dev]
...Thanks, Andrew and Giridharan.ColinOn Fri, Oct 3, 2014 at 1:20 PM, Andrew Bayer  wrote: ...
   Author: Colin McCabe, 2014-10-03, 22:57
[expand - 2 more] - Re: [VOTE] Merge HDFS-6581 to trunk - Writing to replicas in memory. - HDFS - [mail # dev]
...On Wed, Sep 24, 2014 at 4:03 PM, Arpit Agarwal  wrote:Thank you for the offer.  I am OK with the current vote expirationtime, now that we've seen more benchmarks and discussed more...
   Author: Colin McCabe, 2014-09-25, 01:24
[expand - 1 more] - Re: [DISCUSS] Allow continue reading from being-written file using same stream - HDFS - [mail # dev]
...On Fri, Sep 19, 2014 at 9:41 AM, Vinayakumar B  wrote:I think DFSInputStream#available would be a lot more useful if it toldusers how much data could be read without doing network I/O. ...
   Author: Colin McCabe, 2014-09-19, 17:03
Re: In hindsight... Re: Thinking ahead to hadoop-2.6 - HDFS - [mail # dev]
...On Mon, Sep 15, 2014 at 10:48 AM, Allen Wittenauer  wrote:I don't see what is so scary about 2.6, can you be more concrete?  Itseems like a pretty normal release to me and most of ...
   Author: Colin McCabe, 2014-09-15, 18:18
Re: Updates on migration to git - HDFS - [mail # dev]
...Thanks for making this happen, Karthik and Daniel.  Great job.best,ColinOn Tue, Aug 26, 2014 at 5:59 PM, Karthik Kambatla  wrote: ...
   Author: Colin McCabe, 2014-08-27, 20:43
Re: HDFS-6902 FileWriter should be closed in finally block in BlockReceiver#receiveBlock() - HDFS - [mail # dev]
...Let's discuss this on the JIRA.  I think Tsuyoshi OZAWA's solution is good.ColinOn Thu, Aug 21, 2014 at 7:08 AM, Ted Yu  wrote: ...
   Author: Colin McCabe, 2014-08-25, 22:50
Re: [DISCUSS] Switch to log4j 2 - HDFS - [mail # dev]
...On Fri, Aug 15, 2014 at 8:50 AM, Aaron T. Myers  wrote:Yes, this is a great example of making something async withoutswitching logging frameworks.  +1 for doing that where it isapp...
   Author: Colin McCabe, 2014-08-18, 20:32
Re: [VOTE] Migration from subversion to git for version control - HDFS - [mail # dev]
...+1.best,ColinOn Fri, Aug 8, 2014 at 7:57 PM, Karthik Kambatla  wrote: ...
   Author: Colin McCabe, 2014-08-11, 22:40
Re: Finding file size during block placement - HDFS - [mail # dev]
...On Wed, Jul 23, 2014 at 8:15 AM, Arjun  wrote:Hadoop uses a stream metaphor.  So at the time you're deciding what blocksto use for a DFSOutputStream, you don't know how many bytes ...
   Author: Colin McCabe, 2014-07-25, 17:54
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NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB