I don't think that value is used either except in the legacy block reader which is turned off by default.
On Fri, Jan 24, 2014 at 6:34 AM, John Lilley <john.lil...@redpoint.net>wrote: > Ah, I seeā¦ it is a constant > > CommonConfigurationKeysPublic.java: public static final int > IO_FILE_BUFFER_SIZE_DEFAULT = 4096; > > Are there benefits to increasing this for large reads or writes? > > john > > > > *From:* Arpit Agarwal [mailto:aagar...@hortonworks.com] > *Sent:* Thursday, January 23, 2014 3:31 PM > *To:* user@hadoop.apache.org > *Subject:* Re: HDFS buffer sizes > > > > HDFS does not appear to use dfs.stream-buffer-size. > > > > On Thu, Jan 23, 2014 at 6:57 AM, John Lilley <john.lil...@redpoint.net> > wrote: > > What is the interaction between dfs.stream-buffer-size and > dfs.client-write-packet-size? > > I see that the default for dfs.stream-buffer-size is 4K. Does anyone have > experience using larger buffers to optimize large writes? > > Thanks > > > John > > > > > > > CONFIDENTIALITY NOTICE > NOTICE: This message is intended for the use of the individual or entity > to which it is addressed and may contain information that is confidential, > privileged and exempt from disclosure under applicable law. If the reader > of this message is not the intended recipient, you are hereby notified that > any printing, copying, dissemination, distribution, disclosure or > forwarding of this communication is strictly prohibited. If you have > received this communication in error, please contact the sender immediately > and delete it from your system. Thank You. > -- CONFIDENTIALITY NOTICE NOTICE: This message is intended for the use of the individual or entity to which it is addressed and may contain information that is confidential, privileged and exempt from disclosure under applicable law. If the reader of this message is not the intended recipient, you are hereby notified that any printing, copying, dissemination, distribution, disclosure or forwarding of this communication is strictly prohibited. If you have received this communication in error, please contact the sender immediately and delete it from your system. Thank You.