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ulimit -v changed for child job? - Hadoop - [mail # user]
...the Child of our jobs are launched using user hdfs  we got OOM in some jobs when they try to mmap() a big file.  I manually checked the ulimit -v of hdfs on the slave nodes, they a...
   Author: Yang, 2012-06-13, 22:41
[expand - 2 more] - Re: reducer out of memory? - Hadoop - [mail # user]
...thanks, let me run more of this with the settings provided later in this thread and provide the details  On Wed, May 9, 2012 at 10:12 PM, Harsh J  wrote:  output,...
   Author: Yang, 2012-05-10, 18:50
AvatarNode by FB? - Hadoop - [mail # user]
...as described in http://www.google.com/url?sa=t&source=web&cd=1&ved=0CBgQFjAA&url=http%3A%2F%2Fhadoopblog.blogspot.com%2F2010%2F02%2Fhadoop-namenode-high-availability.html&ei=D4MkTsCrI8TRiALN...
   Author: Yang, 2011-07-18, 19:05
question on write failure and commit in HDFS - Hadoop - [mail # user]
...I wonder what happens if a HDFS client writes to 3 replicas, but only one of them succeeds, but the other 2 fail, then the client considers the operation a failure, but what happens to the s...
   Author: Yang, 2011-07-02, 05:32
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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