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Re: reducer gets values with empty attributes - MapReduce - [mail # user]
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...Hi, Here is the map and reduce part of the code public void map(Text key, Writable value, OutputCollector output, Reporter reporter) throws IOException { &nbs...
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Author: alxsss@...,
2013-05-01, 18:12
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Re: Regarding: Merging two hadoop clusters - MapReduce - [mail # user]
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...Are those clusters located in separate LANs? From: Azuryy Yu To: user Sent: Thu, Mar 14, 2013 5:06 am Subject: Re: Regarding: Merging two ...
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Author: alxsss@...,
2013-03-14, 18:03
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Re: balancer and under replication - MapReduce - [mail # user]
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...Are you sure the balancer does anything? I have about 500 missing replicas and 60 Under-replicated blocks and when I start balancer it does not do anything. The balancer outputs ...
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Author: alxsss@...,
2013-01-08, 01:15
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Re: number of mapred slots - MapReduce - [mail # user]
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...I have two slave nodes and one master. One slave node has quad core(4 cpus)(16GB mem) the other slave has dual core (2 cpus) (16 GB mem) and master has dual core 4GB mem. I run h...
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Author: alxsss@...,
2012-12-18, 06:39
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number of mapred slots - MapReduce - [mail # user]
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...Hello, I was unable to find any information regarding relationship between mapred slots and number of cpus on the net. All I found was that it is advisable to schedule two processes fo...
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Author: alxsss@...,
2012-12-18, 06:08
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Re: number of reducers - MapReduce - [mail # user]
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... What is the relationship between number of reducers and cpu cores in your setup? I read somewhere that it must be .5 of number of cpu cores. Thanks. Alex. &n...
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Author: alxsss@...,
2012-11-20, 22:00
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Re: problem with hadoop-snappy - MapReduce - [mail # user]
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... Yes, I have installed snappy-1.0.5. Here is the output of ls -l /usr/local/lib total 1468 lrwxrwxrwx. 1 root root 52 Nov 5 16:00 libjvm.so -> /usr/j...
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Author: alxsss@...,
2012-11-07, 01:42
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Re: problem with hadoop-snappy - MapReduce - [mail # user]
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...When I used hadoop-1.0.4 without the installation of hadoop-snappy I saw in the logs WARN snappy.LoadSnappy: Snappy native library not loaded So, it was my understanding t...
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Author: alxsss@...,
2012-11-06, 21:30
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problem with hadoop-snappy - MapReduce - [mail # user]
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...Hello, I use hadoop-1.0.4 I have followed instruction to install hadoop-snappy at http://code.google.com/p/hadoop-snappy/ When I run a mapred job I see F...
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Author: alxsss@...,
2012-11-06, 01:10
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where to download hadoop-1.0.0 - MapReduce - [mail # user]
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...Hello, I try to use hbase-0.92.1 which is compatible with hadoop-1.0.0. However, I do not see this version of hadoop in the download page. For example, http: //apache.mirrors.pai...
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Author: alxsss@...,
2012-10-05, 19:06
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