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Re: Trouble in running MapReduce application - HDFS - [mail # user]
...Oops. I just noticed Hemanth has been answering on a dupe thread as well. Lets drop this thread and carry on there :)  On Tue, Feb 19, 2013 at 11:14 PM, Harsh J  wrote:   &nbs...
   Author: Harsh J, 2013-02-19, 17:45
Re: Namenode failures - HDFS - [mail # user]
...Hi Robert,  Are you by any chance adding files carrying unusual encoding? If its possible, can we be sent a bundle of the corrupted log set (all of the dfs.name.dir contents) to inspect...
   Author: Harsh J, 2013-02-17, 23:08
Re: How to monitor HDFS upgrade status after removal of "dfsadmin -upgradeProgress status" command? - HDFS - [mail # dev]
...Hi Scott,  Is your goal to monitor the metadata upgrade? It can be checked on the web UI.  Before finalization, you can see a message on the top banner on the NN frontpage such as:...
   Author: Harsh J, 2013-02-17, 19:49
Re: executing hadoop commands from python? - HDFS - [mail # user]
...Instead of 'scraping' this way, consider using a library such as Pydoop (http://pydoop.sourceforge.net) which provides pythonic ways and APIs to interact with Hadoop components. There are al...
   Author: Harsh J, 2013-02-17, 14:09
Re: QJM deployment - HDFS - [mail # user]
...Hi Azuryy,  Thanks for your feedback on the docs! I've filed https://issues.apache.org/jira/browse/HDFS-4508 on your behalf to address them. Feel free to file JIRA with documentation co...
   Author: Harsh J, 2013-02-17, 13:24
Re: building from subversion repository - HDFS - [mail # user]
...Hi George,  The error below is your issue:   To build trunk, a protocol buffers (protobuf) compiler installation of version 2.4 at least is required, cause we have that as a depend...
   Author: Harsh J, 2013-02-17, 13:17
Re: How can I limit reducers to one-per-node? - HDFS - [mail # user]
...The suggestion to add a combiner is to help reduce the shuffle load (and perhaps, reduce # of reducers needed?), but it doesn't affect scheduling of a set number of reduce tasks nor does a s...
   Author: Harsh J, 2013-02-11, 05:48
Re: Secondary Sort example error - HDFS - [mail # user]
...The JIRA https://issues.apache.org/jira/browse/MAPREDUCE-2584 should help such cases, if what I speculated above is indeed the case.  On Fri, Feb 8, 2013 at 12:16 AM, Harsh J  wrot...
   Author: Harsh J, 2013-02-07, 18:49
[HDFS-4277] SocketTimeoutExceptions over the DataXciever service of a DN should print the DFSClient ID - HDFS - [issue]
...Currently, when one faces a SocketTimeoutExceptions (or any exception rather, in a DN log, for a client <-> DN interaction), we fail to print the DFSClient ID. This makes it untraceabl...
http://issues.apache.org/jira/browse/HDFS-4277    Author: Harsh J, 2013-02-07, 00:05
Re: Apache Development Snapshot Repository does not work - HDFS - [mail # user]
...Are you trying to build a specific submodule here, i.e, under what checked out directory are you running the "mvn install" under? I'd recommend running it under the root of the checkout (the...
   Author: Harsh J, 2013-02-01, 19:10
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