I want to mo开发者_运维技巧ve files around in HDFS using the Java APIs.I cannot figure out a way to do this.The FileSystem class only seems to want to allow moving to and from the local file system..
A colleague of mine thinks that HDFS has no maximum file size, i.e., by partitioning into 128 / 256 meg chunks any file size can be stored (obviously the HDFS开发者_高级运维 disk has a size and that w
I\'m trying to install Hadoop on a non-Cloudera Ubuntu test image. Everything seems to have been going well until I ran ./bin/start-all.sh. The name node never comes up so I can\'t even run a hadoop f
I\'m new to hadoop and I\'ve spent the past couple hours trying to google this issue, but I couldn\'t find anything that helped. My problem is HDFS says the file is still open, even though the process
We store our logs in S3, and one of our (Pig) queries would grab three different log types. Each log type is in sets of subdirectories based upon type/date. For instance:
When configuring my hadoop namenode for the first time, I know I need to run bin/hadoop namenode -format
I have a system I wish to distribute where I have a number of very large non-splittable binary files I wish to process in a distributed fashion. These are of the order of a couple of hundreds of Gb. F
Is it possible to pass the locations of a files in HDFS as the value to my mapper so that i can ru开发者_JAVA技巧n an executable on them to process them?yes, you can create file with file names in the
We\'re about to buy new hardware to run our analyses and are wondering if we\'re making the right decisions.
If I copy data from local system to HDFS, сan I be sure that it is distributed evenly across the nodes?
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