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[HDFS-7476] Consolidate ACL-related operations to a single class - HDFS - [issue]
...This jira proposes to consolidate ACL-related operations scattered in FSNamesystem and FSDirectory into a single class....
http://issues.apache.org/jira/browse/HDFS-7476    Author: Haohui Mai, 2014-12-07, 15:25
[HDFS-7478] Move org.apache.hadoop.hdfs.server.namenode.NNConf to FSNamesystem - HDFS - [issue]
...The NNConf class appears to be straightforward and is only used by FSNamesystem. We may want to move it into FSNamesystem....
http://issues.apache.org/jira/browse/HDFS-7478    Author: Li Lu, 2014-12-06, 15:24
[HDFS-7472] Fix typo in message of ReplicaNotFoundException - HDFS - [issue]
...unexpeted -> unexpected...
http://issues.apache.org/jira/browse/HDFS-7472    Author: Masatake Iwasaki, 2014-12-06, 15:24
[HDFS-7459] Consolidate cache-related implementation in FSNamesystem into a single class - HDFS - [issue]
...This jira proposes to consolidate cache-related implementation in FSNamesystem into a single class....
http://issues.apache.org/jira/browse/HDFS-7459    Author: Haohui Mai, 2014-12-06, 15:24
Fwd: Slow waitForAckedSeqno took too long time - HDFS - [mail # dev]
...Forwarding to hdfs-dev@ since the logs were pertaining to namenode.CheersFrom: louis.hust Date: Fri, Dec 5, 2014 at 8:52 PMSubject: Re: Slow waitForAckedSeqno took too long timeTo: [EMAIL PR...
   Author: Ted Yu, 2014-12-06, 15:24
[HDFS-5757] refreshNodes with many nodes at the same time could slow down NN - HDFS - [issue]
...Sometimes we need to decomm a whole rack of nodes at the same time. When the decomm is in process; NN is slow.The reason is when DecommissionManager checks the decomm status, it acquires nam...
http://issues.apache.org/jira/browse/HDFS-5757    Author: Ming Ma, 2014-12-06, 06:20
[HDFS-7485] Avoid string operations in FSPermissionChecker - HDFS - [issue]
...Currently FSPermissionChecker compares strings when testing users and groups. It should compare the id assigned by SerialNumberManager....
http://issues.apache.org/jira/browse/HDFS-7485    Author: Haohui Mai, 2014-12-06, 06:04
[HDFS-7396] Revisit synchronization in Namenode - HDFS - [issue]
...HDFS-2106 separated block management to a new package from namenode.  As part of it, some code was refactored to new classes such as DatanodeManager, HeartbeatManager, etc.  There ...
http://issues.apache.org/jira/browse/HDFS-7396    Author: Tsz Wo Nicholas Sze, 2014-12-06, 01:03
[HDFS-7017] Implement OutputStream for libhdfs3 - HDFS - [issue]
...Implement pipeline and OutputStream C++ interface...
http://issues.apache.org/jira/browse/HDFS-7017    Author: Zhanwei Wang, 2014-12-05, 22:09
[HDFS-7390] Provide JMX metrics per storage type - HDFS - [issue]
...HDFS-2832  added heterogeneous support. In a cluster with different storage types, it is useful to have metrics per storage type....
http://issues.apache.org/jira/browse/HDFS-7390    Author: Benoy Antony, 2014-12-05, 21:11
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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