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[HDFS-7714] Simultaneous restart of HA NameNodes and DataNode can cause DataNode to register successfully with only one NameNode. - HDFS - [issue]
...In an HA deployment, DataNodes must register with both NameNodes and send periodic heartbeats and block reports to both.  However, if NameNodes and DataNodes are restarted simultaneousl...
http://issues.apache.org/jira/browse/HDFS-7714    Author: Chris Nauroth, 2015-02-01, 12:52
[HDFS-4265] BKJM doesn't take advantage of speculative reads - HDFS - [issue]
...BookKeeperEditLogInputStream reads entry at a time, so it doesn't take advantage of the speculative read mechanism introduced by BOOKKEEPER-336....
http://issues.apache.org/jira/browse/HDFS-4265    Author: Ivan Kelly, 2015-02-01, 11:30
[HDFS-7285] Erasure Coding Support inside HDFS - HDFS - [issue]
...Erasure Coding (EC) can greatly reduce the storage overhead without sacrifice of data reliability, comparing to the existing HDFS 3-replica approach. For example, if we use a 10+4 Reed Solom...
http://issues.apache.org/jira/browse/HDFS-7285    Author: Weihua Jiang, 2015-02-01, 07:38
[HDFS-7289] TestDFSUpgradeWithHA sometimes fails in trunk - HDFS - [issue]
...From trunk build #1912:REGRESSION:  org.apache.hadoop.hdfs.server.namenode.ha.TestDFSUpgradeWithHA.testFinalizeFromSecondNameNodeWithJournalNodesError Message:java.lang.RuntimeException...
http://issues.apache.org/jira/browse/HDFS-7289    Author: Ted Yu, 2015-02-01, 01:58
[HDFS-7647] DatanodeManager.sortLocatedBlocks() sorts DatanodeInfos but not StorageIDs - HDFS - [issue]
...DatanodeManager.sortLocatedBlocks() sorts the array of DatanodeInfos inside each LocatedBlock, but does not touch the array of StorageIDs and StorageTypes. As a result, the DatanodeInfos and...
http://issues.apache.org/jira/browse/HDFS-7647    Author: Milan Desai, 2015-01-31, 21:18
[HDFS-7706] Switch BlockManager logging to use slf4j - HDFS - [issue]
...Nice little refactor to do....
http://issues.apache.org/jira/browse/HDFS-7706    Author: Andrew Wang, 2015-01-31, 15:22
[HDFS-7720] Quota by Storage Type API, tools and ClientNameNode Protocol changes - HDFS - [issue]
...Split the patch into small ones based on the feedback. This one covers the HDFS API changes, tool changes and ClientNameNode protocol changes....
http://issues.apache.org/jira/browse/HDFS-7720    Author: Xiaoyu Yao, 2015-01-31, 04:56
[HDFS-7719] BlockPoolSliceStorage could not remove storageDir. - HDFS - [issue]
...The parameter of BlockPoolSliceStorage#removeVolumes() is a set of volume level directories, thus BlockPoolSliceStorage could not directly compare its own StorageDirs with this volume-level ...
http://issues.apache.org/jira/browse/HDFS-7719    Author: Lei, 2015-01-31, 04:22
[HDFS-7712] Switch blockStateChangeLog to use slf4j - HDFS - [issue]
...As pointed out in HDFS-7706, updating blockStateChangeLog to use slf4j will save a lot of string construction costs....
http://issues.apache.org/jira/browse/HDFS-7712    Author: Andrew Wang, 2015-01-31, 02:29
[HDFS-7723] Quota By Storage Type namenode implemenation - HDFS - [issue]
...This includes: 1) new editlog to persist quota by storage type op 2) corresponding fsimage load/save the new op. 3) QuotaCount refactor to update usage of the storage types for quota enforce...
http://issues.apache.org/jira/browse/HDFS-7723    Author: Xiaoyu Yao, 2015-01-31, 01:50
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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