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[HDFS-80] Rename of a directory with many opened files blocks name-node for a long time. changeLease() to blame. - HDFS - [issue]
...I am creating a directory containing 200,000 files, and then renaming it.The rename operation is twice as long as the the total time for creating all those files.The worst thing is that the ...
http://issues.apache.org/jira/browse/HDFS-80    Author: Konstantin Shvachko, 2014-07-18, 06:28
[HDFS-337] Name collision for AccessControlException. - HDFS - [issue]
...There is a name collision in org.apache.hadoop.fs.permission.AccessControlException and java.security.AccessControlException.Since  java.security.AccessControlException is not an IOExce...
http://issues.apache.org/jira/browse/HDFS-337    Author: Konstantin Shvachko, 2014-07-17, 23:00
[HDFS-306] FSNamesystem.shutdown() should be a part of FSNamesystem.close() - HDFS - [issue]
...FSNamesystem should either close() or shutdown(), but not both.Traditionally we used to have FSNamesystem.close()....
http://issues.apache.org/jira/browse/HDFS-306    Author: Konstantin Shvachko, 2014-07-17, 22:43
[expand - 1 more] - Re: Meetup invitation: Consensus based replication in Hadoop - HDFS - [mail # dev]
...Ok, or Cos.On Fri, Jul 11, 2014 at 4:41 PM, Konstantin Shvachko wrote: ...
   Author: Konstantin Shvachko, 2014-07-11, 23:43
Re: [VOTE] Change by-laws on release votes: 5 days instead of 7 - HDFS - [mail # dev]
...+1Thanks,On Tue, Jun 24, 2014 at 1:53 AM, Arun C Murthy  wrote: ...
   Author: Konstantin Shvachko, 2014-06-29, 23:40
[HDFS-2064] Warm HA NameNode going Hot - HDFS - [issue]
...This is the design for automatic hot HA for HDFS NameNode. It involves use of HA software and LoadReplicator - external to Hadoop components, which substantially simplify the architecture by...
http://issues.apache.org/jira/browse/HDFS-2064    Author: Konstantin Shvachko, 2014-06-06, 02:11
Introducing ConsensusNode and a Coordination Engine - HDFS - [mail # dev]
...Hello hadoop developers,I just opened two jiras proposing to introduce ConsensusNode into HDFS anda Coordination Engine into Hadoop Common. The latter should benefit HDFSand  HBase as w...
   Author: Konstantin Shvachko, 2014-05-29, 21:10
[HDFS-6325] Append should fail if the last block has insufficient number of replicas - HDFS - [issue]
...Currently append() succeeds on a file with the last block that has no replicas. But the subsequent updatePipeline() fails as there are no replicas with the exception "Unable to retrieve bloc...
http://issues.apache.org/jira/browse/HDFS-6325    Author: Konstantin Shvachko, 2014-05-20, 16:37
Re: Re-swizzle 2.3 - HDFS - [mail # dev]
...Sorry for the last minute request.Can we add HDFS-4858 to the release, please?It solves pretty important bug related to failover.I can commit momentarily if there are no objections.Thanks,On...
   Author: Konstantin Shvachko, 2014-02-11, 01:53
[HDFS-4370] Fix typo Blanacer in DataNode - HDFS - [issue]
...It is in JavaDoc of DataNode.getBalancerBandwidth(). Should be Balancer....
http://issues.apache.org/jira/browse/HDFS-4370    Author: Konstantin Shvachko, 2014-02-10, 14:51
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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