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[HDFS-2975] Rename with overwrite flag true can make NameNode to stuck in safemode on NN (crash + restart). - HDFS - [issue]
...When we rename the file with overwrite flag as true, it will delete the destination file blocks. After deleting the blocks, whenever it releases the fsNameSystem lock, NN can give the invali...
http://issues.apache.org/jira/browse/HDFS-2975    Author: Uma Maheswara Rao G, 2014-09-04, 17:37
[HDFS-6959] Make the HDFS home directory location customizable. - HDFS - [issue]
...The path is currently hardcoded:public Path getHomeDirectory() {    return makeQualified(new Path("/user/" + dfs.ugi.getShortUserName()));  }It would be nice to have...
http://issues.apache.org/jira/browse/HDFS-6959    Author: Kevin Odell, 2014-09-04, 17:37
[HDFS-6660] Use int instead of object reference to DatanodeStorageInfo in BlockInfo triplets, - HDFS - [issue]
...Map an int index to every DatanodeStorageInfo and use it instead of object reference in the BlockInfo triplets data structure....
http://issues.apache.org/jira/browse/HDFS-6660    Author: Amir Langer, 2014-09-04, 17:31
[HDFS-253] Method to retrieve all quotas active on HDFS - HDFS - [issue]
...Currently the only way to view quota information on an HDFS is via dfs -count -q, which is fine when an admin is examining a specific directory for quota status.It would also be good to do f...
http://issues.apache.org/jira/browse/HDFS-253    Author: Marco Nicosia, 2014-09-04, 16:26
[HDFS-2711] getAllHdfsQuotas() API - HDFS - [issue]
...There's not a particularly easy way to get a list of all the quotas in HDFS today.  It would be really nice to have an API that made information about the quotas and their respective fi...
http://issues.apache.org/jira/browse/HDFS-2711    Author: Jonathan Natkins, 2014-09-04, 16:26
[HDFS-6659] Create a Block List - HDFS - [issue]
...BlockList - An efficient array based list that can extend its capacity with two main features:1. Gaps (result of remove operations) are managed internally without the need for extra memory -...
http://issues.apache.org/jira/browse/HDFS-6659    Author: Amir Langer, 2014-09-04, 15:21
[HDFS-5442] Zero loss HDFS data replication for multiple datacenters - HDFS - [issue]
...Hadoop is architected to operate efficiently at scale for normal hardware failures within a datacenter. Hadoop is not designed today to handle datacenter failures. Although HDFS is not desig...
http://issues.apache.org/jira/browse/HDFS-5442    Author: Avik Dey, 2014-09-04, 10:51
[HDFS-6609] Use DirectorySnapshottableFeature to represent a snapshottable directory - HDFS - [issue]
...Currently we use INodeDirectorySnapshottable to represent a snapshottable directory. When we set a directory to snapshottable, we also need to replace the corresponding INode. It will be bet...
http://issues.apache.org/jira/browse/HDFS-6609    Author: Jing Zhao, 2014-09-04, 07:16
[HDFS-6036] Forcibly timeout misbehaving DFSClients that try to do no-checksum reads that extend too long - HDFS - [issue]
...We should forcibly timeout misbehaving DFSClients that try to do no-checksum reads that extend too long....
http://issues.apache.org/jira/browse/HDFS-6036    Author: Colin Patrick McCabe, 2014-09-04, 03:55
[HDFS-6482] Use block ID-based block layout on datanodes - HDFS - [issue]
...Right now blocks are placed into directories that are split into many subdirectories when capacity is reached. Instead we can use a block's ID to determine the path it should go in. This eli...
http://issues.apache.org/jira/browse/HDFS-6482    Author: James Thomas, 2014-09-04, 03:55
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