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Re: Question about Name Spaces… - HDFS - [mail # user]
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...Actually creating links, symbolic or hard links makes sense in a couple of scenarios. Especially in terms of hive... ;-) So it kind of goes back to my extension of the question ...
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Author: Michael Segel,
2013-05-15, 22:19
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Re: hadoop pipes or java with jni? - HDFS - [mail # user]
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...I'm partial to using Java and JNI and then use the distributed cache to push the native libraries out to each node if not already there. But that's just me... ;-) HTH -Mi...
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Author: Michael Segel,
2013-03-04, 02:04
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Re: Encryption in HDFS - HDFS - [mail # user]
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...You can encrypt the splits separately. The issue of key management is actually a layer above this. Looks like the research is on the encryption process w a known key. The...
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Author: Michael Segel,
2013-02-27, 12:58
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Re: why my test result on dfs short circuit read is slower? - HDFS - [mail # user]
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...On Feb 17, 2013, at 7:09 PM, "Liu, Raymond" wrote: Drop this down to 64KB not 128KB. You have 16 cpu which really means 8 cores and 4 disks. Do you have Gang...
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Author: Michael Segel,
2013-02-18, 10:16
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Re: Mainframe to ASCII conversion - HDFS - [mail # user]
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...Depends. If the data is straight EBCDIC you have somewhat splittable data, however its really better to do this in a single stream. If the data is COMP-3 (Zoned and Packed Data)...
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Author: Michael Segel,
2013-02-11, 17:01
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Re: How can I limit reducers to one-per-node? - HDFS - [mail # user]
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...Adding a combiner step first then reduce? On Feb 8, 2013, at 11:18 PM, Harsh J wrote: Michael Segel | (m) 312.755.9623 Segel and Associates ...
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Author: Michael Segel,
2013-02-11, 01:30
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Re: Generic output key class - HDFS - [mail # user]
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...Why not just write out the int as a numeric string? On Feb 10, 2013, at 1:07 PM, Sandy Ryza wrote: Michael Segel | (m) 312.755.9623 Segel and Associates ...
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Author: Michael Segel,
2013-02-11, 01:18
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Re: On a lighter note - HDFS - [mail # user]
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...I'm thinking 'Downfall' But I could be wrong. On Jan 17, 2013, at 6:56 PM, Yongzhi Wang wrote: ...
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Author: Michael Segel,
2013-01-18, 01:03
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Re: queues in haddop - HDFS - [mail # user]
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...He's got two different queues. 1) queue in capacity scheduler so he can have a set or M/R tasks running in the background to pull data off of... 2) a durable queue that receives...
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Author: Michael Segel,
2013-01-11, 15:06
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Re: Hadoop throughput question - HDFS - [mail # user]
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...You can't really say that. Too many variables in terms of networking. (Like what other traffic is occurring at the same time? Or who else is attached to the NAS? On Jan 3, 2013,...
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Author: Michael Segel,
2013-01-04, 00:11
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