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[HDFS-7210] Avoid two separate RPC's namenode.append() and namenode.getFileInfo() for an append call from DFSClient - HDFS - [issue]
...Currently DFSClient does 2 RPCs to namenode for an append operation.append() for re-opening the file and getting the last block, getFileInfo() Another on to get HdfsFileStateIf we can combin...
http://issues.apache.org/jira/browse/HDFS-7210    Author: Vinayakumar B, 2015-03-02, 17:02
[HDFS-7349] Support DFS command for the EC encoding - HDFS - [issue]
...Support implementation of the following commandshdfs dfs -convertToEC <path>   <path>: Converts all blocks under this path to EC form (if not already in EC form, and if...
http://issues.apache.org/jira/browse/HDFS-7349    Author: Vinayakumar B, 2015-02-28, 01:15
[HDFS-7832] Show 'Last Modified' in Namenode's 'Browse Filesystem' - HDFS - [issue]
...new UI no longer shows the last modified time for a path while browsing.This could be added to make browse file system more useful....
http://issues.apache.org/jira/browse/HDFS-7832    Author: Vinayakumar B, 2015-02-26, 15:26
Re: Block creation in HDFS - HDFS - [mail # dev]
...Hi abhishek,Is Your partitions of same sizes? If yes, then you can set that as blocksize.If not you can use the latest feature.. variable block size.To verify your use case.You can close the...
   Author: Vinayakumar B, 2015-02-17, 10:25
[HDFS-7410] Support CreateFlags with append() to support hsync() for appending streams - HDFS - [issue]
...Current FileSystem APIs include CreateFlag only for the create() api, and some of these (SYNC_BLOCK) are for only client side and will not be stored in metadata of the file. So append() oper...
http://issues.apache.org/jira/browse/HDFS-7410    Author: Vinayakumar B, 2015-02-13, 09:55
[HDFS-7703] Support favouredNodes for the append for new blocks - HDFS - [issue]
...Currently favorNodes is supported for the new file creation, and these nodes are applicable for all blocks of the file.Same support should be available when file is opened for append.But, ev...
http://issues.apache.org/jira/browse/HDFS-7703    Author: Vinayakumar B, 2015-02-13, 05:38
[HDFS-7690] Avoid Block movement in Balancer and Mover for the erasure encoded blocks - HDFS - [issue]
...As striped design says, its would be more fault tolerant if the striped blocks reside in different nodes of different racks. But Balancer and Mover may break this by moving the encoded block...
http://issues.apache.org/jira/browse/HDFS-7690    Author: Vinayakumar B, 2015-01-29, 03:49
[HDFS-7583] Fix findbug in TransferFsImage.java - HDFS - [issue]
...Fix following findbug resulting in recent jenkins runsExceptional return value of java.io.File.delete() ignored in org.apache.hadoop.hdfs.server.namenode.TransferFsImage.deleteTmpFiles(List)...
http://issues.apache.org/jira/browse/HDFS-7583    Author: Vinayakumar B, 2015-01-28, 17:04
[HDFS-7683] Combine usages and percent stats in NameNode UI - HDFS - [issue]
...In NameNode UI, there are separate rows to display cluster usage, one is in bytes, another one is in percentage.We can combine these two rows to just display percent usage in brackets....
http://issues.apache.org/jira/browse/HDFS-7683    Author: Vinayakumar B, 2015-01-28, 15:24
[HDFS-7691] Handle hflush and hsync in the best optimal way possible during online Erasure encoding - HDFS - [issue]
...as mentioned in design doc, hsync and hflush tends to make the online erasure encoding complex.But these are critical features to ensure fault tolerance for some users.These operations shoul...
http://issues.apache.org/jira/browse/HDFS-7691    Author: Vinayakumar B, 2015-01-28, 07:16
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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