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[HDFS-8273] FSNamesystem#Delete() should not call logSync() when holding the lock - HDFS - [issue]
...HDFS-7573 moves the logSync call inside of the write lock by accident. We should move it out....
http://issues.apache.org/jira/browse/HDFS-8273    Author: Jing Zhao, 2015-04-29, 19:14
[HDFS-8280] Code Cleanup in DFSInputStream - HDFS - [issue]
...This is some code cleanup separate from HDFS-8272: Avoid duplicated block reader creation code If no new source DN can be found, getBestNodeDNAddrPair returns null instead of throwing Except...
http://issues.apache.org/jira/browse/HDFS-8280    Author: Jing Zhao, 2015-04-29, 16:34
[HDFS-8235] Create DFSStripedInputStream in DFSClient#open - HDFS - [issue]
...Currently DFSClient#open can only create a DFSInputStream object. It should also support DFSStripedInputStream....
http://issues.apache.org/jira/browse/HDFS-8235    Author: Jing Zhao, 2015-04-28, 01:35
[HDFS-7509] Avoid resolving path multiple times - HDFS - [issue]
http://issues.apache.org/jira/browse/HDFS-7509    Author: Jing Zhao, 2015-04-25, 00:23
[HDFS-7076] Allow users to define custom storage policies - HDFS - [issue]
...Currently block storage policies are hard coded.  This JIRA is to persist the policies in FSImage and Edit Log in order to support adding new policies or modifying existing policies....
http://issues.apache.org/jira/browse/HDFS-7076    Author: Jing Zhao, 2015-04-24, 20:25
[HDFS-8233] Fix DFSStripedOutputStream#getCurrentBlockGroupBytes when the last stripe is at the block group boundary - HDFS - [issue]
...Currently DFSStripedOutputStream#getCurrentBlockGroupBytes simply uses getBytesCurBlock of each streamer to calculate the block group size. This is wrong when the last stripe is at the block...
http://issues.apache.org/jira/browse/HDFS-8233    Author: Jing Zhao, 2015-04-23, 23:43
[HDFS-6385] Show when block deletion will start after NameNode startup in WebUI - HDFS - [issue]
...HDFS-6186 provides functionality to delay block deletion for a period of time after NameNode startup. Currently we only show the number of pending block deletions in WebUI. We should also sh...
http://issues.apache.org/jira/browse/HDFS-6385    Author: Jing Zhao, 2015-04-21, 18:50
[HDFS-8005] Erasure Coding: simplify striped block recovery work computation and add tests - HDFS - [issue]
...HDFS-7369 adds the functionality to distribute recovery work of striped blocks to datanodes. There are still some pending issues: In BlockManager#chooseSourceNode, a node is added into healt...
http://issues.apache.org/jira/browse/HDFS-8005    Author: Jing Zhao, 2015-04-18, 18:15
[HDFS-8145] Fix the editlog corruption exposed by failed TestAddStripedBlocks - HDFS - [issue]
...TestAddStripedBlocks failed with some editlog corruption. Did some debugging, I can see at least two issues: DFSStripedOutputStream tries to send out an empty packet to close the block even ...
http://issues.apache.org/jira/browse/HDFS-8145    Author: Jing Zhao, 2015-04-18, 02:16
[HDFS-8127] NameNode Failover during HA upgrade can cause DataNode to finalize upgrade - HDFS - [issue]
...Currently for HA upgrade (enabled by HDFS-5138), we use -bootstrapStandby to initialize the standby NameNode. The standby NameNode does not have the previous directory thus it does not know ...
http://issues.apache.org/jira/browse/HDFS-8127    Author: Jing Zhao, 2015-04-15, 16:37
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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