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[HDFS-252] Export the HDFS file system through a NFS protocol - HDFS - [issue]
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...It would be nice if can expose the HDFS filesystem using the NFS protocol.There are a couple of options that I could find:1. Use a user space C-language-implementation of a NFS server and th...
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http://issues.apache.org/jira/browse/HDFS-252
Author: dhruba borthakur,
2013-04-25, 04:11
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[HDFS-487] HDFS should expose a fileid to uniquely identify a file - HDFS - [issue]
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...HDFS should expose a id that uniquely identifies a file. This helps in developing applications that work correctly even when files are moved from one directory to another. A typical us...
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http://issues.apache.org/jira/browse/HDFS-487
Author: dhruba borthakur,
2013-04-19, 23:27
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[HDFS-2006] ability to support storing extended attributes per file - HDFS - [issue]
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...It would be nice if HDFS provides a feature to store extended attributes for files, similar to the one described here: http://en.wikipedia.org/wiki/Extended_file_attributes. The challenge is...
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http://issues.apache.org/jira/browse/HDFS-2006
Author: dhruba borthakur,
2013-04-12, 17:55
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[HDFS-1783] Ability for HDFS client to write replicas in parallel - HDFS - [issue]
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...The current implementation of HDFS pipelines the writes to the three replicas. This introduces some latency for realtime latency sensitive applications. An alternate implementation that allo...
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http://issues.apache.org/jira/browse/HDFS-1783
Author: dhruba borthakur,
2013-03-06, 19:40
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[HDFS-976] Hot Standby for NameNode - HDFS - [issue]
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...This is a place holder to share our code and experiences about implementing a Hot Standby for the HDFS NameNode for hadoop 0.20....
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http://issues.apache.org/jira/browse/HDFS-976
Author: dhruba borthakur,
2013-02-08, 23:50
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[HDFS-395] DFS Scalability: Incremental block reports - HDFS - [issue]
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...I have a cluster that has 1800 datanodes. Each datanode has around 50000 blocks and sends a block report to the namenode once every hour. This means that the namenode processes a block repor...
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http://issues.apache.org/jira/browse/HDFS-395
Author: dhruba borthakur,
2013-02-01, 12:40
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[HDFS-1108] Log newly allocated blocks - HDFS - [issue]
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...The current HDFS design says that newly allocated blocks for a file are not persisted in the NN transaction log when the block is allocated. Instead, a hflush() or a close() on the file pers...
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http://issues.apache.org/jira/browse/HDFS-1108
Author: dhruba borthakur,
2012-12-03, 07:33
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[HDFS-1539] prevent data loss when a cluster suffers a power loss - HDFS - [issue]
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...we have seen an instance where a external outage caused many datanodes to reboot at around the same time. This resulted in many corrupted blocks. These were recently written blocks; th...
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http://issues.apache.org/jira/browse/HDFS-1539
Author: dhruba borthakur,
2012-12-03, 07:33
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[HDFS-1031] Enhance the webUi to list a few of the corrupted files in HDFS - HDFS - [issue]
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...The existing webUI displays something like this:WARNING : There are about 12 missing blocks. Please check the log or run fsck. It would be nice if we can display the filenames that have miss...
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http://issues.apache.org/jira/browse/HDFS-1031
Author: dhruba borthakur,
2012-11-10, 23:34
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[HDFS-385] Design a pluggable interface to place replicas of blocks in HDFS - HDFS - [issue]
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...The current HDFS code typically places one replica on local rack, the second replica on remote random rack and the third replica on a random node of that remote rack. This algorithm is baked...
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http://issues.apache.org/jira/browse/HDFS-385
Author: dhruba borthakur,
2012-09-06, 00:52
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