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another HDFS configuration for scribeH - HDFS - [mail # dev]
...Hi Eric,  I was debugging a bizar data corruption case in the silver cluster today an d realized that there is a very important configuration that scribeH cluste r should set. Could you...
   Author: Hairong Kuang, 2011-12-02, 04:22
Re: Why datanode does a flush to disk after receiving a packet - HDFS - [mail # dev]
...A few clarification on API2 semantics.  1. Ack gets sent back to the client before a packet gets written to local files. 2. Data become visible to new readers on the condition that at l...
   Author: Hairong Kuang, 2010-11-11, 19:55
Re: [VOTE] New branch for HDFS-1052 development - HDFS - [mail # dev]
...+1. Look forward to the feature completion.  Hairong  On 8/19/10 10:00 PM, "Dhruba Borthakur"  wrote:  ...
   Author: Hairong Kuang, 2010-08-20, 06:06
Re: HDFS: buffer before contacts Namenode? - HDFS - [mail # user]
...DataNode only buffers a packet before it contacts NameNode for allocating DataNodes to place the block. The doc you read might be too old.  Hairong  On 8/9/10 7:14 PM, "elton sky" ...
   Author: Hairong Kuang, 2010-08-10, 16:55
Re: [VOTE] Commit hdfs-1024 to 0.20 branch - HDFS - [mail # dev]
...+1 Good catch!  Hairong  On Sat, Apr 3, 2010 at 12:55 PM, Andrew Purtell  wrote:  ...
   Author: Hairong Kuang, 2010-04-05, 19:08
Re: [VOTE -- Round 2] Commit hdfs-630 to 0.21? - HDFS - [mail # dev]
...+1  Hairong  On Fri, Jan 22, 2010 at 10:51 AM, Dhruba Borthakur  wrote:  ...
   Author: Hairong Kuang, 2010-01-22, 19:50
Re: Reading while appending in 0.21 - HDFS - [mail # user]
...This semantics is stated in our append specification attached to HDFS-265. Hflushed data are visible to new readers who open the file after the hflush.  Hairong  On Mon, Jan 11, 20...
   Author: Hairong Kuang, 2010-01-12, 01:42
Re: Thanks for the super excellent, fancy-pants sync/flush/append - HDFS - [mail # user]
...Temporarily you can continue to use the method "sync" in FSDataOutputStream. In HDFS, "sync" will eventually call "hflush". Because of the project split, we can not make "hflush" visible in ...
   Author: Hairong Kuang, 2009-10-08, 00:54
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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