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[HDFS-4746] ClassCastException in BlockManager.addStoredBlock() due to that blockReceived came after file was closed. - HDFS - [issue]
...In some cases the last block replica of a file can be reported after the file was closed. In this case file inode is of type INodeFile. BlockManager.addStoredBlock() though expects it to be ...
http://issues.apache.org/jira/browse/HDFS-4746    Author: Konstantin Shvachko, 2015-07-13, 18:29
Re: NameNode as a single point of failure - HDFS - [mail # dev]
...Hey Dmitry,You understood correctly that QJM with automatic failover is the currentstate of the art for HDFS.With it we still have a single active NameNode on the cluster at any giventime, w...
   Author: Konstantin Shvachko, 2015-07-07, 01:32
[HDFS-2484] checkLease should throw FileNotFoundException when file does not exist - HDFS - [issue]
...When file is deleted during its creation FSNamesystem.checkLease(String src, String holder) throws LeaseExpiredException. It would be more informative if it thrown FileNotFoundException....
http://issues.apache.org/jira/browse/HDFS-2484    Author: Konstantin Shvachko, 2015-05-08, 12:36
[HDFS-8081] Split getAdditionalBlock() into two methods. - HDFS - [issue]
...A minor refactoring to introduce two methods one corresponding to Part I and another to Part II to make getAdditionalBlock() more readable....
http://issues.apache.org/jira/browse/HDFS-8081    Author: Konstantin Shvachko, 2015-04-10, 16:38
[HDFS-7675] Remove unused member DFSClient#spanReceiverHost - HDFS - [issue]
...DFSClient#spanReceiverHost is initialised but never used....
http://issues.apache.org/jira/browse/HDFS-7675    Author: Konstantin Shvachko, 2015-04-01, 20:27
[HDFS-7956] Improve logging for DatanodeRegistration. - HDFS - [issue]
...DatanodeRegistration.toString() prints only its address without the port, it should print its full address, similar NamenodeRegistration....
http://issues.apache.org/jira/browse/HDFS-7956    Author: Konstantin Shvachko, 2015-03-24, 03:01
[HDFS-2605] CHANGES.txt has two "Release 0.21.1" sections - HDFS - [issue]
...CHANGES.txt in hdfs-project has 2 sections titled "Release 0.21.1 - Unreleased". They are not identical, should be merged....
http://issues.apache.org/jira/browse/HDFS-2605    Author: Konstantin Shvachko, 2015-03-14, 15:40
[HDFS-7007] Interfaces to plugin ConsensusNode. - HDFS - [issue]
...This is to introduce interfaces in NameNode and namesystem, which are needed to plugin ConsensusNode....
http://issues.apache.org/jira/browse/HDFS-7007    Author: Konstantin Shvachko, 2015-03-12, 17:32
[HDFS-6940] Initial refactoring to allow ConsensusNode implementation - HDFS - [issue]
...Minor refactoring of FSNamesystem to open private methods that are needed for CNode implementation....
http://issues.apache.org/jira/browse/HDFS-6940    Author: Konstantin Shvachko, 2015-03-10, 07:07
[HDFS-7740] Test truncate with DataNodes restarting - HDFS - [issue]
...Add a test case, which ensures replica consistency when DNs are failing and restarting....
http://issues.apache.org/jira/browse/HDFS-7740    Author: Konstantin Shvachko, 2015-03-05, 19:30
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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