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[HDFS-6700] BlockPlacementPolicy shoud choose storage but not datanode for deletion - HDFS - [issue]
...HDFS-2832 changed datanode storage model from a single storage, which may correspond to multiple physical storage medias, to a collection of storages with each storage corresponding to a phy...
http://issues.apache.org/jira/browse/HDFS-6700    Author: Tsz Wo Nicholas Sze, 2014-08-01, 03:38
[HDFS-6702] DFSClient should create blocks using StorageType - HDFS - [issue]
...When DFSClient asks NN for a new block (via addBlock), NN returns a LocatedBlock with storage type information.  However, DFSClient does not use StorageType to create blocks with DN. &n...
http://issues.apache.org/jira/browse/HDFS-6702    Author: Tsz Wo Nicholas Sze, 2014-08-01, 03:38
[HDFS-1294] StreamFile is a datanode servlet but it is misplaced in the namenode package - HDFS - [issue]
...The StreamFile servlet is only used by datanode but not namenode....
http://issues.apache.org/jira/browse/HDFS-1294    Author: Tsz Wo Nicholas Sze, 2014-07-31, 00:00
[HDFS-1251] Unnecessary log messages are printed in info level - HDFS - [issue]
...When I run a job on a secure cluster, the following messages are printed on the console.10/06/19 05:05:18 INFO hdfs.DFSClient: Created HDFS_DELEGATION_TOKEN token 125033 for tsz10/06/19 05:0...
http://issues.apache.org/jira/browse/HDFS-1251    Author: Tsz Wo Nicholas Sze, 2014-07-30, 21:59
[HDFS-2316] [umbrella] WebHDFS: a complete FileSystem implementation for accessing HDFS over HTTP - HDFS - [issue]
...We current have hftp for accessing HDFS over HTTP.  However, hftp is a read-only FileSystem and does not provide "write" accesses.In HDFS-2284, we propose to have WebHDFS for providing ...
http://issues.apache.org/jira/browse/HDFS-2316    Author: Tsz Wo Nicholas Sze, 2014-07-29, 22:19
[HDFS-6123] Improve datanode error messages - HDFS - [issue]
...Yesha Vora found two cases that there are unnecessary exception stack trace in datanode log: SocketTimeoutException2014-03-07 03:30:44,567 INFO datanode.DataNode (BlockSender.java:sendPacket...
http://issues.apache.org/jira/browse/HDFS-6123    Author: Tsz Wo Nicholas Sze, 2014-07-29, 20:01
[HDFS-6686] Archival Storage: Use fallback storage types - HDFS - [issue]
...HDFS-6671 changes replication monitor to use block storage policy for replication.  It should also use the fallback storage types when a particular type of storage is full....
http://issues.apache.org/jira/browse/HDFS-6686    Author: Tsz Wo Nicholas Sze, 2014-07-23, 18:25
[HDFS-6677] Archival Storage: Change INodeFile and FSImage to support storage policy - HDFS - [issue]
...Policy ID will be stored in INodeFile header with 4 bits which can support 16 different storage policies.  The number of bits for replication will be reduced from 16 bits to 12 bits whi...
http://issues.apache.org/jira/browse/HDFS-6677    Author: Tsz Wo Nicholas Sze, 2014-07-22, 21:28
[HDFS-5229] Add a storage type attribute to file - HDFS - [issue]
...When creating a file, user could specify the required storage type.  The type information need to be stored so that it could be used for block placement....
http://issues.apache.org/jira/browse/HDFS-5229    Author: Tsz Wo Nicholas Sze, 2014-07-22, 21:28
[HDFS-6680] BlockPlacementPolicyDefault does not choose favored nodes correctly - HDFS - [issue]
...In one of the chooseTarget(..) methods, it tries all the favoredNodes to chooseLocalNode(..).  It expects chooseLocalNode to return null if the local node is not a good target.  Un...
http://issues.apache.org/jira/browse/HDFS-6680    Author: Tsz Wo Nicholas Sze, 2014-07-22, 16:05
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