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[HDFS-7344] Erasure Coding worker and support in DataNode - HDFS - [issue]
...According to HDFS-7285 and the design, this handles DataNode side extension and related support for Erasure Coding, and implements ECWorker. The handled use cases: Converting replica blocks ...
http://issues.apache.org/jira/browse/HDFS-7344    Author: Kai Zheng, 2015-03-30, 15:05
[HDFS-8024] Erasure Coding: ECworker basics, bootstraping and configuration - HDFS - [issue]
...This is to come up ECWorker itself, considering its basic setup, configuration and bootstrapping, which will be used to frame all the related work together, like BlockGroup, coding work, blo...
http://issues.apache.org/jira/browse/HDFS-8024    Author: Kai Zheng, 2015-03-30, 14:51
[HDFS-8023] Erasure Coding: retrieve eraure coding policy and schema for a block or file from NameNode - HDFS - [issue]
...NameNode needs to provide RPC call for client, tool, or DataNode to retrieve eraure coding policy and schema for a block or file from NameNode....
http://issues.apache.org/jira/browse/HDFS-8023    Author: Kai Zheng, 2015-03-30, 14:17
[HDFS-8022] Erasure Coding: handle read/write failure for non-stripping coding blocks - HDFS - [issue]
...In non-stripping case, for (6, 3)-Reed-Solomon, ECWorker reads 6 data blocks and writes 3 parity blocks. We need to handle datanode or network failures when reading or writing local or remot...
http://issues.apache.org/jira/browse/HDFS-8022    Author: Kai Zheng, 2015-03-30, 14:10
[HDFS-8020] Erasure Coding: restore BlockGroup and schema info from stripping coding command - HDFS - [issue]
...As a task of HDFS-7344, to process stripping coding commands from NameNode, we need to first be able to restore BlockGroup and schema information, which will be used to construct coding work...
http://issues.apache.org/jira/browse/HDFS-8020    Author: Kai Zheng, 2015-03-30, 13:55
[HDFS-8021] Erasure Coding: restore BlockGroup and schema info from non-stripping coding command - HDFS - [issue]
...As a task of HDFS-7344, to process non-stripping coding commands from NameNode, we need to first be able to restore BlockGroup and schema information, which will be used to construct coding ...
http://issues.apache.org/jira/browse/HDFS-8021    Author: Kai Zheng, 2015-03-30, 13:53
[HDFS-8019] Erasure Coding: erasure coding chunk buffer allocation and management - HDFS - [issue]
...As a task of HDFS-7344, this is to come up a chunk buffer pool allocating and managing coding chunk buffers, either based on on-heap or off-heap....
http://issues.apache.org/jira/browse/HDFS-8019    Author: Kai Zheng, 2015-03-30, 13:42
[HDFS-8018] Erasure Coding: on-demand erasure recovery for erased data serving client request in DataNode - HDFS - [issue]
...As a task of HDFS-7344, this is to enhance and allow ECWorker to be able to serve data on demand when client requests for erased blocks in non-stripping erasure coding case. In stripping cas...
http://issues.apache.org/jira/browse/HDFS-8018    Author: Kai Zheng, 2015-03-30, 13:37
[HDFS-8016] Erasure Coding: perform non-stripping erasure encoding work given block reader and writer - HDFS - [issue]
...This assumes the facilities like block reader and writer are ready, implements and performs erasure encoding work in non-stripping case utilizing erasure codec and coder provided by the code...
http://issues.apache.org/jira/browse/HDFS-8016    Author: Kai Zheng, 2015-03-30, 13:28
[HDFS-7346] Erasure Coding: perform stripping erasure encoding work given block reader and writer - HDFS - [issue]
...This assumes the facilities like block reader and writer are ready, implements and performs erasure encoding work in stripping case utilizing erasure codec and coder provided by the codec fr...
http://issues.apache.org/jira/browse/HDFS-7346    Author: Kai Zheng, 2015-03-30, 13:27
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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