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[HDFS-6353] Check and make checkpoint before stopping the NameNode - HDFS - [issue]
...One of the failure patterns I have seen is, in some rare circumstances, due to some inconsistency the secondary or standby fails to consume editlog. The only solution when this happens is to...
http://issues.apache.org/jira/browse/HDFS-6353    Author: Suresh Srinivas, 2015-03-27, 16:42
[HDFS-3689] Add support for variable length block - HDFS - [issue]
...Currently HDFS supports fixed length blocks. Supporting variable length block will allow new use cases and features to be built on top of HDFS....
http://issues.apache.org/jira/browse/HDFS-3689    Author: Suresh Srinivas, 2015-03-17, 18:20
[HDFS-6118] Code cleanup - HDFS - [issue]
...HDFS code needs cleanup related to many typos, undocumented parameters, unused methods, unnecessary cast, imports and exceptions declared as thrown to name a few.I plan on working on cleanin...
http://issues.apache.org/jira/browse/HDFS-6118    Author: Suresh Srinivas, 2015-03-14, 01:04
[HDFS-2847] NamenodeProtocol#getBlocks() should use DatanodeID as an argument instead of DatanodeInfo - HDFS - [issue]
...DatanodeID is sufficient for identifying a Datanode. DatanodeInfo has a lot of information that is not required....
http://issues.apache.org/jira/browse/HDFS-2847    Author: Suresh Srinivas, 2015-03-10, 04:59
[HDFS-3092] Enable journal protocol based editlog streaming for standby namenode - HDFS - [issue]
...Currently standby namenode relies on reading shared editlogs to stay current with the active namenode, for namespace changes. BackupNode used streaming edits from active namenode for doing t...
http://issues.apache.org/jira/browse/HDFS-3092    Author: Suresh Srinivas, 2015-03-10, 04:36
[HDFS-1832] FSNamesystem#startFileInternal unnecessarily traverses the directory multiple times - HDFS - [issue]
...FSNamesystem#startFileInternal looks up Inode for a given path multiple times. A single lookup should be sufficient....
http://issues.apache.org/jira/browse/HDFS-1832    Author: Suresh Srinivas, 2015-03-10, 01:49
[HDFS-7568] Support immutability (Write-once-read-many) in HDFS - HDFS - [issue]
...Many regulatory compliance requires storage to support WORM functionality to protect sensitive data from being modified or deleted. This jira proposes adding that feature to HDFS.See the fol...
http://issues.apache.org/jira/browse/HDFS-7568    Author: Suresh Srinivas, 2015-02-26, 19:31
[HDFS-4167] Add support for restoring/rolling back to a snapshot - HDFS - [issue]
...This jira tracks work related to restoring a directory/file to a snapshot....
http://issues.apache.org/jira/browse/HDFS-4167    Author: Suresh Srinivas, 2015-02-05, 19:21
[HDFS-4989] Balancer needs to consider storage type in balancing - HDFS - [issue]
...Balancer needs to balance with in a storage tier. A couple of works: add an option of storageType in balancer CLI to balance data on a specific storage type. add storageType to BalancingPoli...
http://issues.apache.org/jira/browse/HDFS-4989    Author: Suresh Srinivas, 2015-01-21, 08:06
[HDFS-7408] Add a counter in the log that shows the number of block reports processed - HDFS - [issue]
...It would be great to have in the info log corresponding to block report processing, printing information on how many block reports have been processed. This can be useful to debug when namen...
http://issues.apache.org/jira/browse/HDFS-7408    Author: Suresh Srinivas, 2014-11-18, 22:36
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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