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[HDFS-7437] Storing block ids instead of BlockInfo object in INodeFile - HDFS - [issue]
...Currently INodeFile stores the lists of blocks as references of BlockInfo instead of the block ids. This creates implicit dependency between the namespace and the block manager.The dependenc...
http://issues.apache.org/jira/browse/HDFS-7437    Author: Haohui Mai, 2014-11-28, 23:57
[HDFS-6735] A minor optimization to avoid pread() be blocked by read() inside the same DFSInputStream - HDFS - [issue]
...In current DFSInputStream impl, there're a couple of coarser-grained locks in read/pread path, and it has became a HBase read latency pain point so far. In HDFS-6698, i made a minor patch ag...
http://issues.apache.org/jira/browse/HDFS-6735    Author: Liang Xie, 2014-11-28, 23:28
[HDFS-7454] Implement Global ACL Set for memory optimization in NameNode - HDFS - [issue]
...HDFS-5620 indicated a GlobalAclSet containing unique AclFeature can be de-duplicated to save the memory in NameNode. However it was not implemented at that time.This Jira re-proposes same im...
http://issues.apache.org/jira/browse/HDFS-7454    Author: Vinayakumar B, 2014-11-28, 19:39
[HDFS-7210] Avoid two separate RPC's namenode.append() and namenode.getFileInfo() for an append call from DFSClient - HDFS - [issue]
...Currently DFSClient does 2 RPCs to namenode for an append operation.append() for re-opening the file and getting the last block, getFileInfo() Another on to get HdfsFileStateIf we can combin...
http://issues.apache.org/jira/browse/HDFS-7210    Author: Vinayakumar B, 2014-11-28, 16:04
[HDFS-5620] NameNode: implement Global ACL Set as a memory optimization. - HDFS - [issue]
...The AclManager can maintain a Global ACL Set to store all distinct ACLs in use by the file system.  All inodes that have the same ACL entries can share the same ACL instance....
http://issues.apache.org/jira/browse/HDFS-5620    Author: Chris Nauroth, 2014-11-28, 10:15
[HDFS-7452] Can we skip getCorruptFiles() call for standby NameNode..? - HDFS - [issue]
...Seen following warns logs from StandBy Namenode logs ..2014-11-27 17:50:32,497 | WARN  | 512264920@qtp-429668078-606 | Get corrupt file blocks returned error: Operation category READ is...
http://issues.apache.org/jira/browse/HDFS-7452    Author: Brahma Reddy Battula, 2014-11-28, 08:21
[HDFS-7384] 'getfacl' command and 'getAclStatus' output should be in sync - HDFS - [issue]
...getfacl command will print all the entries including basic and extended entries, mask entries and effective permissions.But, getAclStatus FileSystem API will return only extended ACL entries...
http://issues.apache.org/jira/browse/HDFS-7384    Author: Vinayakumar B, 2014-11-27, 16:19
[HDFS-7453] Namenode does not recognize block is missing on a datanode - HDFS - [issue]
...We got a severe datalose due to the fact that namenode didn't recognized block it thinks exist are not actually exist on the datanodes. The senario is something as follows: A disk fails on o...
http://issues.apache.org/jira/browse/HDFS-7453    Author: Dmitry Bugaychenko, 2014-11-27, 15:36
[HDFS-7310] Mover can give first priority to local DN if it has target storage type available in local DN - HDFS - [issue]
...Currently Mover logic may move blocks to any DN which had target storage type. But if the src DN has target storage type then mover can give highest priority to local DN. If local DN does no...
http://issues.apache.org/jira/browse/HDFS-7310    Author: Uma Maheswara Rao G, 2014-11-27, 15:29
[HDFS-7444] convertToBlockUnderConstruction should preserve BlockCollection - HDFS - [issue]
...BlockInfo#convertToBlockUnderConstruction converts a BlockInfo object to a BlockInfoUnderConstruction object. The callee instead of the caller should preserve the BlockCollection field....
http://issues.apache.org/jira/browse/HDFS-7444    Author: Haohui Mai, 2014-11-27, 15:29
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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