Hadoop will not automatically compress a file that you place into it. If you compress a file before placing it in Hadoop, the compression package is used by MapReduce jobs to transparently decompress your GZipped files as input.
Thanks, Stu -----Original Message----- From: Ryan <[EMAIL PROTECTED]> Sent: Monday, November 26, 2007 8:16pm To: [email protected] Subject: Whether the file is compressed before store it to hadoop? Hi, I'm new to the Hadoop, I'm confused by the store procedures, I found a zlib implementation in the package org.apache.hadoop.io.compression, So I wonder whether the file stored in Hadoop is compressed before it actually in Hadoop. that means Hadoop store the file is its compressed one. sincerely Ryan _________________________________________________________________ 用 Live Search 搜尽天下资讯！ http://www.live.com/?searchOnly=true
