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[HDFS-7964] Add support for async edit logging - HDFS - [issue]
...Edit logging is a major source of contention within the NN.  LogEdit is called within the namespace write log, while logSync is called outside of the lock to allow greater concurrency. ...
http://issues.apache.org/jira/browse/HDFS-7964    Author: Daryn Sharp, 2015-03-30, 13:39
[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
[HDFS-8017] Erasure Coding: perform non-stripping erasure decoding work given block reader and writer - HDFS - [issue]
...This assumes the facilities like block reader and writer are ready, implements and performs erasure decoding work in non-stripping case utilizing erasure codec and coder provided by the code...
http://issues.apache.org/jira/browse/HDFS-8017    Author: Kai Zheng, 2015-03-30, 13:25
[HDFS-7348] Erasure Coding: perform stripping erasure decoding work given block reader and writer - HDFS - [issue]
...This assumes the facilities like block reader and writer are ready, implements and performs erasure decoding work in stripping case utilizing erasure codec and coder provided by the codec fr...
http://issues.apache.org/jira/browse/HDFS-7348    Author: Kai Zheng, 2015-03-30, 13:21
[HDFS-8015] Erasure Coding: local and remote block writer for coding work in DataNode - HDFS - [issue]
...As a task of HDFS-7344 ECWorker, in either stripping or non-stripping erasure coding, to perform encoding or decoding, we need to be able to write data blocks locally or remotely. This is to...
http://issues.apache.org/jira/browse/HDFS-8015    Author: Kai Zheng, 2015-03-30, 13:11
[HDFS-8014] Erasure Coding: local and remote block reader for coding work in DataNode - HDFS - [issue]
...As a task of HDFS-7344 ECWorker, in either stripping or non-stripping erasure coding, to perform encoding or decoding, we need first to be able to read locally or remotely data blocks. This ...
http://issues.apache.org/jira/browse/HDFS-8014    Author: Kai Zheng, 2015-03-30, 13:07
[HDFS-8013] Erasure coding: distribute recovery work for erasure coding blocks to DataNode - HDFS - [issue]
...Similar to HDFS-7369, for non-stripping erasure coding, NameNode may detect some erasure coding blocks are erased, so will schedule and distribute recovery work to DataNode to reconstruct su...
http://issues.apache.org/jira/browse/HDFS-8013    Author: Kai Zheng, 2015-03-30, 11:54
[HDFS-7369] Erasure coding: distribute recovery work for striped blocks to DataNode - HDFS - [issue]
...This JIRA updates NameNode to handle background / offline recovery of erasure coded blocks. It includes 2 parts: Extend UnderReplicatedBlocks to recognize EC blocks and insert them to approp...
http://issues.apache.org/jira/browse/HDFS-7369    Author: Zhe Zhang, 2015-03-30, 11:53
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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