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[HDFS-4197] SNN JMX is lacking checkpoint info - HDFS - [issue]
...The SecondaryNameNode status.jsp page contains the following:SecondaryNameNode StatusName Node Address    : snn1/172.29.122.91:50020Start Time           : ...
http://issues.apache.org/jira/browse/HDFS-4197    Author: Andy Isaacson, 2013-02-02, 14:51
Re: Dell Hardware - HDFS - [mail # user]
...On Thu, Jan 31, 2013 at 8:53 AM, Artem Ervits  wrote:  The R720 supports up to 2 xeon CPUs and 8 drives in 2U. If configured appropriately it will work fine as a Hadoop node. For e...
   Author: Andy Isaacson, 2013-01-31, 19:13
Re: Problems - HDFS - [mail # user]
...Some of the unit tests fail with 1.7. HDFS and MR mostly work OK, but if you run into problems with 1.7 the first question will be "does it work in 1.6?".  -andy  On Thu, Jan 17, 2...
   Author: Andy Isaacson, 2013-01-17, 22:40
Re: Some mappers are much slower than others in reading data from HDFS - HDFS - [mail # user]
...It's hard to speculate on the minimal information you've provided so far. Seems like it's time to break out the performance analysis toolkit and see what's going on differently between the f...
   Author: Andy Isaacson, 2013-01-14, 21:40
[HDFS-4335] dfs -mkdir /foo reports "/" rather than "/foo" in error output - HDFS - [issue]
...ubuntu@ubu-cdh-0:~$ hdfs dfs -mkdir /foomkdir: Permission denied: user=ubuntu, access=WRITE, inode="/":hdfs:hadoop:drwxr-xr-xIt would be better if the Permission Denied message included the ...
http://issues.apache.org/jira/browse/HDFS-4335    Author: Andy Isaacson, 2012-12-22, 02:28
[HDFS-4140] fuse-dfs handles open(O_TRUNC) poorly - HDFS - [issue]
...fuse-dfs handles open(O_TRUNC) poorly.It is converted to multiple fuse operations.  Those multiple fuse operations often fail (for example, calling fuse_truncate_impl() while a file is ...
http://issues.apache.org/jira/browse/HDFS-4140    Author: Andy Isaacson, 2012-12-19, 23:50
Re: New to Hadoop - HDFS - [mail # dev]
...On Fri, Dec 14, 2012 at 10:43 AM, Joseph Kniest  wrote:  Look for JIRAs with the "newbie" label: https://issues.apache.org/jira/issues/?jql=labels%20%3D%20newbie%20AND%20project%20...
   Author: Andy Isaacson, 2012-12-14, 19:25
Re: Strange machine behavior - HDFS - [mail # user]
...What kernel did you see this on? Was there significant swap traffic (si/so in vmstat output) during the high-system-time period?  BTW, you don't need to nor do you want to run sync(1) w...
   Author: Andy Isaacson, 2012-12-10, 19:23
Re: profiling hdfs write path - HDFS - [mail # dev]
...On Wed, Dec 5, 2012 at 6:02 PM, Radim Kolar  wrote:  I don't really know the YARN or MAPREDUCE code bases so I'm going to pass on those ones...   Todd asked a pretty reasonabl...
   Author: Andy Isaacson, 2012-12-06, 23:06
[HDFS-4178] shell scripts should not close stderr - HDFS - [issue]
...The start-dfs.sh and stop-dfs.sh scripts close stderr for some subprocesses using the construct2>&-This is dangerous because child processes started up under this scenario will re-use...
http://issues.apache.org/jira/browse/HDFS-4178    Author: Andy Isaacson, 2012-11-20, 13:21
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