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[HDFS-4465] Optimize datanode ReplicasMap and ReplicaInfo - HDFS - [issue]
...In Hadoop a lot of optimization has been done in namenode data structures to be memory efficient. Similar optimizations are necessary for Datanode process. With the growth in storage per dat...
http://issues.apache.org/jira/browse/HDFS-4465    Author: Suresh Srinivas, 2013-07-11, 23:12
[expand - 2 more] - Re: Willing to work on Issue - HDFS-4901 - Where to start? - HDFS - [mail # dev]
...Vivek,  I have added you as HDFS contributor and assigned the jira to you.  Regards, Suresh   On Mon, Jul 8, 2013 at 6:30 PM, Vivek Ganesan wrote:     http://hortonw...
   Author: Suresh Srinivas, 2013-07-09, 06:16
[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, 2013-07-08, 19:40
[HDFS-3182] Add class to manage JournalList - HDFS - [issue]
...See the comment for details of the JournalList ZooKeeper znode....
http://issues.apache.org/jira/browse/HDFS-3182    Author: Suresh Srinivas, 2013-07-08, 18:23
[expand - 1 more] - Re: data loss after cluster wide power loss - HDFS - [mail # dev]
...On Wed, Jul 3, 2013 at 8:12 AM, Colin McCabe  wrote:   ext3 journal may not hit the disk right. From what I read, if you do not specifically call sync, even the metadata operations...
   Author: Suresh Srinivas, 2013-07-03, 17:19
Fwd: DesignLounge @ HadoopSummit - HDFS - [mail # dev]
...FYI HDFS committers and developers... This will be participant-driven unconference style session.  So no formal presentations are planned. Some of the things that we could discuss are: ...
   Author: Suresh Srinivas, 2013-06-24, 21:48
[expand - 2 more] - Re: Heads up: branch-2.1-beta - HDFS - [mail # dev]
...Can you please run the tests with -Xms2G added? Sent from a mobile device  On Jun 20, 2013, at 6:02 PM, Roman Shaposhnik  wrote:  ...
   Author: Suresh Srinivas, 2013-06-21, 01:05
[HDFS-4904] Remove JournalService - HDFS - [issue]
...JournalService class was added in HDFS-3099. Since it was not used in HDFS-3077, which has JournalNodeRpcServer instead, I propose deleting this dead code....
http://issues.apache.org/jira/browse/HDFS-4904    Author: Suresh Srinivas, 2013-06-15, 15:07
[HDFS-3125] Add a service that enables JournalDaemon - HDFS - [issue]
...In this subtask, I plan to add JournalService. It will provide the following functionality: Starts RPC server with JournalProtocolService or uses the RPC server provided and add JournalProto...
http://issues.apache.org/jira/browse/HDFS-3125    Author: Suresh Srinivas, 2013-06-14, 19:43
[HDFS-2857] Cleanup BlockInfo class - HDFS - [issue]
...Following are some of the cleanup required: Remove unnecessary methods Add interface annotation Make some of the method private...
http://issues.apache.org/jira/browse/HDFS-2857    Author: Suresh Srinivas, 2013-06-14, 00:13
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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