Here was the justification from 2004: https://bugs.openjdk.java.net/browse/JDK-4953311
Also, some research into the matter (not my own): http://nadeausoftware.com/articles/2008/02/java_tip_how_read_files_quickly One of the conclusions: "Minimize I/O operations by reading an array at a time, not a byte at a time. An 8Kbyte array is a good size." On Tue, Dec 15, 2015 at 3:41 PM, Colin McCabe <cmcc...@alumni.cmu.edu> wrote: > Hi David, > > Do you have benchmarks to justify changing this configuration? > > best, > Colin > > On Wed, Dec 9, 2015 at 8:05 AM, dam6923 . <dam6...@gmail.com> wrote: >> Hello! >> >> A while back, Java 1.6, the size of the internal internal file-reading >> buffers were bumped-up to 8192 bytes. >> >> http://grepcode.com/file/repository.grepcode.com/java/root/jdk/openjdk/6-b14/java/io/BufferedInputStream.java >> >> Perhaps it's time to update Hadoop to at least this default level too. :) >> >> https://issues.apache.org/jira/browse/HADOOP-2705 >> >> Thanks, >> David
