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[HDFS-2249] Group changes cause FUSE-DFS I/O error - HDFS - [issue]
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...If a user utilizes the FUSE mount, then has a group change, they will be unable to write into FUSE using the new group information.To duplicate (assuming user brian starts only in group bria...
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http://issues.apache.org/jira/browse/HDFS-2249
Author: Brian Bockelman,
2012-10-03, 20:49
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Re: unsubscribe - HDFS - [mail # user]
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...Alright folks, enough is enough. While it's fun to watch the number of people who do not know how to work with a basic mailing list, I'd like to have my inbox back. If you ...
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Author: Brian Bockelman,
2012-08-08, 14:28
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[HDFS-838] libhdfs causes a segfault due to race condition - HDFS - [issue]
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...The first libhdfs operation that is performed is not thread-safe; this is because the creation of a JVM is not protected by a mutex.We have been able to trigger this by doing the following:1...
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http://issues.apache.org/jira/browse/HDFS-838
Author: Brian Bockelman,
2012-07-06, 18:40
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[HDFS-860] fuse-dfs truncate behavior causes issues with scp - HDFS - [issue]
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...For whatever reason, scp issues a "truncate" once it's written a file to truncate the file to the # of bytes it has written (i.e., if a file is X bytes, it calls truncate(X)).This fails on t...
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http://issues.apache.org/jira/browse/HDFS-860
Author: Brian Bockelman,
2012-05-17, 14:03
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Re: libhdfs process fork problem - HDFS - [mail # dev]
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...Hi Tareq, Sorry - out of ideas, without doing something like "strace"ing the process to verify that the master never tries to initialize a JVM. If exec'ing doesn't work, th...
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Author: Brian Bockelman,
2012-03-27, 18:49
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Re: libhdfs process fork problem - HDFS - [mail # dev]
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...Hi Tareq, This is because libhdfs will keep a bit of state data (especially if the master was connected to HDFS). Three suggestions: 1) [Likely to work] Fork the children f...
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Author: Brian Bockelman,
2012-03-23, 11:25
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Re: corrupted edits log after power failure - HDFS - [mail # dev]
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...Hi Gabi, I'd be a bit scared of that backup strategy; what happens if the TCP connection gets cut suddenly during curl? What happens if there's a TCP corruption? &nbs...
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Author: Brian Bockelman,
2011-09-22, 19:15
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Re: questions regarding fuse_dfs_read - HDFS - [mail # dev]
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...Hi Aastha, A read-ahead buffer is a common technique to trade higher bandwidth for lower latency for a number of common read patterns. Your OS does something similar ...
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Author: Brian Bockelman,
2011-09-07, 12:15
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Re: Merging Namenode Federation feature (HDFS-1052) to trunk - HDFS - [mail # dev]
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...On Mar 21, 2011, at 6:08 PM, Sanjay Radia wrote: DNs. things if a data node is willing to store blocks for any NN anywhere in the data center. with a set of data nodes and each c...
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Author: Brian Bockelman,
2011-03-21, 23:25
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Re: libhdfs not getting compiled - HDFS - [mail # dev]
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...Hi Aastha, This is not hadoop-specific advice, but general debugging: 1) Verify you are using the version of the library you think you are. Done. 2) Rebuild. 3) Check the ...
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Author: Brian Bockelman,
2011-03-18, 13:23
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