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[HADOOP-6207] libhdfs leaks object references - Hadoop - [issue]
...libhdfs leaks many objects during normal operation.  This becomes exacerbated by long-running processes (such as FUSE-DFS)....
http://issues.apache.org/jira/browse/HADOOP-6207    Author: Brian Bockelman, 2014-07-23, 22:50
[HDFS-2249] Group changes cause FUSE-DFS I/O error - HDFS - [issue]
...If a user utilizes the FUSE mount, then has a group change, they will be unable to write into FUSE using the new group information.To duplicate (assuming user brian starts only in group bria...
http://issues.apache.org/jira/browse/HDFS-2249    Author: Brian Bockelman, 2014-07-21, 23:06
[HDFS-215] Offline Namenode fsImage verification - HDFS - [issue]
...Currently, there is no way to verify that a copy of the fsImage is not corrupt.  I propose that we should have an offline tool that loads the fsImage into memory to see if it is usable....
http://issues.apache.org/jira/browse/HDFS-215    Author: Brian Bockelman, 2014-07-21, 18:56
[HDFS-89] Datanode should verify block sizes vs metadata on startup - HDFS - [issue]
...I could have sworn this bug had been reported by someone else already, but I can't find it on JIRA after searching.... apologies if this is a duplicate.The datanode, upon starting up, should...
http://issues.apache.org/jira/browse/HDFS-89    Author: Brian Bockelman, 2014-07-21, 18:55
[HDFS-221] Trigger block scans for datanode - HDFS - [issue]
...Provide a mechanism to trigger block scans in a datanode upon request.  Support interfaces for commands sent by the namenode and through the HTTP interface....
http://issues.apache.org/jira/browse/HDFS-221    Author: Brian Bockelman, 2014-07-21, 18:25
[HDFS-2251] Namenode does not recognize incorrectly sized blocks - HDFS - [issue]
...We had a lot of file system corruption resulting in incorrectly sized blocks (on disk, they're truncated to 192KB when they should be 64MB).However, I cannot make Hadoop realize that these b...
http://issues.apache.org/jira/browse/HDFS-2251    Author: Brian Bockelman, 2014-07-21, 18:13
[HDFS-316] Balancer should run for a configurable # of iterations - HDFS - [issue]
...The balancer currently exits if nothing has changed after 5 iterations.Our site would like to constantly balance a stream of incoming data; we would like to be able to set the number of iter...
http://issues.apache.org/jira/browse/HDFS-316    Author: Brian Bockelman, 2014-07-19, 01:13
Re: measuring iops - Hadoop - [mail # user]
...Hi Rita,  I get a bit grumpy when I see IOPS as the primary metric with respect to  HDFS.  Why?  While IOPS are actually a relevant part of the system, many use  cas...
   Author: Brian Bockelman, 2012-10-23, 23:40
Re: Suitability of HDFS for live file store - MapReduce - [mail # user]
...Hi,  We use HDFS to process data for the LHC - somewhat similar case here.   Our files are a bit larger, our total local data size if ~1PB logical,  and we "bring our own" bat...
   Author: Brian Bockelman, 2012-10-15, 20:35
Re: unsubscribe - HDFS - [mail # user]
...Alright folks, enough is enough.  While it's fun to watch the number of people who do not know how to work  with a basic mailing list, I'd like to have my inbox back.  If you ...
   Author: Brian Bockelman, 2012-08-08, 14:28
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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