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RE: which hadoop version to use - MapReduce - [mail # user]
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...Have you looked at HDP for Windows? http://hortonworks.com/download/ It is a 1.1-based distro and is designed for easier Windows install. I haven't used it myself. john From: Che...
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Author: John Lilley,
2013-05-17, 23:49
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RE: Is FileSystem thread-safe? - MapReduce - [mail # user]
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...Vinod, Thanks, I was mostly asking in the context of attempting to unify the output of multiple tasks. I've seen that in most cases, users opt to output a folder full of file parts int...
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Author: John Lilley,
2013-05-17, 17:16
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RE: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...Vinod, Your first two items are spot on. We don't expect to have the cluster to ourselves. We also expect to interop with existing HDFS data and want to schedule for data localit...
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Author: John Lilley,
2013-05-17, 17:15
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RE: Question about writing HDFS files - MapReduce - [mail # user]
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...Right, sorry for the ambiguity, I was talking about HDFS writes only. So my application doesn't need to do anything to signal that it is writing from inside vs. outside of the Hadoop c...
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Author: John Lilley,
2013-05-17, 13:38
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RE: Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...Thanks! This sounds exactly like what I need. PUBLIC is right. Do you know if this works for executables as well? Like, would there be any issue transferring the exec...
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Author: John Lilley,
2013-05-17, 13:35
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Question about writing HDFS files - MapReduce - [mail # user]
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...I seem to recall reading that when a MapReduce task writes a file, the blocks of the file are always written to local disk, and replicated to other nodes. If this is true, is this also...
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Author: John Lilley,
2013-05-16, 22:08
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Distribution of native executables and data for YARN-based execution - MapReduce - [mail # user]
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...I am attempting to distribute the execution of a C-based program onto a Hadoop cluster, without using MapReduce. I read that YARN can be used to schedule non-MapReduce applications by ...
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Author: John Lilley,
2013-05-16, 21:21
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YARN in 0.23 vs 2.0 - MapReduce - [mail # user]
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...We will be programming to the YARN resource manager and scheduler in an upcoming project, but I am unclear regarding its level of integration in each version. Searching for, say, Appl...
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Author: John Lilley,
2013-05-16, 18:46
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RE: Why big block size for HDFS. - MapReduce - [mail # user]
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...From: Rahul Bhattacharjee [mailto:[EMAIL PROTECTED]] Subject: Why big block size for HDFS. While there are no guarantees that disk storage will be contiguous, the OS will attemp...
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Author: John Lilley,
2013-03-31, 18:58
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RE: Is FileSystem thread-safe? - MapReduce - [mail # user]
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...From: Ted Yu [mailto:[EMAIL PROTECTED]] Subject: Re: Is FileSystem thread-safe? Good point. I am calling FileSystem.get(URI uri, Configuration conf) with an URI like "hdfs://server:por...
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Author: John Lilley,
2013-03-31, 18:27
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