T开发者_StackOverflow社区he distributed file systems which like Google File System and Hadoop doesn\'t support random I/O.
Is there some distribute开发者_Python百科d storage like Hadoop but with the advantages of ZFS?You might find this recent blog entry by Ben Rockwood interesting http://cuddletech.com/blog/?p=562 . Ben
As I\'ve noted previously, Pig doesn\'t cope well with empty (0-byte) files. U开发者_JAVA技巧nfortunately, there are lots of ways that these files can be created (even within Hadoop utilitities).
I would like to know how to run Pig queries stored in Hive format. I have configured Hive to store compressed data (using this tutorial http://wiki.apache.org/hadoop/Hive/CompressedStorage).
We\'re using Amazon\'s Elastic Map Reduce to perform some large file processing jobs. As a part of our workflow, we occasionally need to remove files from S3 that may already exist. We do so using the
Right now we have a Hadoop job in Java that is working with some C++ binaries. We write files to NFS and C++ and Java read them and that is our form of communication, which prevents us from scaling. I
开发者_C百科I want to write my own map and reduce function in mapreduce framework How can I do that??(my programming language is java)
I have started Hadoop and Hbase successfully. But when I try this operation like, ./hbase shell HBase Shell; enter \'help\' for list of supported commands.
This is kind of an odd situation, but I\'m looking for a way to filter using something like MATCHES but on a list of unknown patterns (of unknown length).
$hdfs dfs -rmr crawl 11/04/16 08:49:33 INFO security.Groups: Group mapping impl=org.apache.hadoop.security.ShellBasedUnixGroupsMapping; cacheTimeout=300000
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