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Re: md5sum of files on HDFS ? - HDFS - [mail # user]
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...The FileSytem API exposes a getFileChecksum() method http://archive.cloudera.com/cdh/3/hadoop-0.20.2-CDH3B4/api/org/apache/hadoop/fs/FileSystem.html#getFileChecksum(org.apache.hadoop.fs.Path...
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Author: Philip Zeyliger,
2011-03-02, 18:00
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Re: odd temp dir created in hdfs from hdfs-site.xml file setting? - HDFS - [mail # user]
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...Hadoop's default configurations use hadoop.tmp.dir both for the local file system and HDFS. Specifically, mapred.system.dir is, I believe, a directory on HDFS, and defaults to be a sub...
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Author: Philip Zeyliger,
2010-12-09, 01:24
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Re: namenode http fsck - HDFS - [mail # user]
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...As far as I'm aware, in Hadoop 0.20, you're right that that's the case. In versions of Hadoop that have security, some of the web interfaces have been secured away. The open sour...
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Author: Philip Zeyliger,
2010-11-19, 17:34
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Re: Newbie Query - HDFS - [mail # user]
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...The heap size tends to be controlled by options passed to the JVM. Try setting HADOOP_HEAPSIZE in hadoop-env.sh. On Sat, Oct 16, 2010 at 4:57 AM, Clement Jebakumar wrote: ...
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Author: Philip Zeyliger,
2010-10-16, 17:07
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Re: Best way to write files to hdfs (from a Python app) - HDFS - [mail # user]
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...On Tue, Aug 10, 2010 at 5:06 AM, Bjoern Schiessle wrote: It works only if your python app has network connectivity to your namenode. You can access an explicitly specified HDFS ...
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Author: Philip Zeyliger,
2010-08-10, 16:39
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Re: Best way to write files to hdfs (from a Python app) - HDFS - [mail # user]
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...Hi Bjoern, To give you an example of how this may be done, HUE, under the covers, pipe s your data to 'bin/hadoop fs -Dhadoop.job.ugi=user,group put - path'. (That's from memory,...
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Author: Philip Zeyliger,
2010-08-09, 23:35
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