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[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, 2015-03-02, 17:02
[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-6353] Handle checkpoint failure more gracefully - 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, 2015-01-13, 05:26
[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
Re: [VOTE] Release Apache Hadoop 2.6.0 - HDFS - [mail # dev]
...+1 (binding)Verified the signatures and hashes for both src and binary tars. Built fromthe source, the binary distribution and the documentation. Started a singlenode cluster and tested the ...
   Author: Suresh Srinivas, 2014-11-17, 21:30
[HDFS-2832] Enable support for heterogeneous storages in HDFS - DN as a collection of storages - HDFS - [issue]
...HDFS currently supports configuration where storages are a list of directories. Typically each of these directories correspond to a volume with its own file system. All these directories are...
http://issues.apache.org/jira/browse/HDFS-2832    Author: Suresh Srinivas, 2014-11-11, 22:17
[HDFS-6186] Pause deletion of blocks when the namenode starts up - HDFS - [issue]
...HDFS namenode can delete blocks very quickly, given the deletion happens as a parallel operation spread across many datanodes. One of the frequent anxieties I see is that a lot of data can b...
http://issues.apache.org/jira/browse/HDFS-6186    Author: Suresh Srinivas, 2014-10-30, 03:34
[expand - 1 more] - Re: [DISCUSS] Resolving the divergences for web-related code between branch-2 and trunk - HDFS - [mail # dev]
...Webui equivalent data has been exposed as jmx http APIs for a long time (I think from 0.20 release, almost 4 years ago). We have made many jsp changes that we have made that should have brok...
   Author: Suresh Srinivas, 2014-10-01, 23:05
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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