RE: HDFS buffer sizes

2014-02-09 Thread John Lilley
Thanks. Experimentally, I have found that changing the buffers sizes has no effect, so that makes sense. John From: Arpit Agarwal [mailto:aagar...@hortonworks.com] Sent: Tuesday, January 28, 2014 12:35 AM To: user@hadoop.apache.org Subject: Re: HDFS buffer sizes Looks like

Re: HDFS buffer sizes

2014-01-27 Thread Arpit Agarwal
gt; any benefit to setting a larger bufferSize in FileSystem.create() and > FileSystem.append()? > > > > *From:* Arpit Agarwal [mailto:aagar...@hortonworks.com] > *Sent:* Friday, January 24, 2014 9:35 AM > > *To:* user@hadoop.apache.org > *Subject:* Re: HDFS buffer

RE: HDFS buffer sizes

2014-01-25 Thread John Lilley
.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 mailto:john.lil...@redpoint.net>> wrote: What is the interaction between dfs.stream-buffer-size and dfs.client-write-packet-size? I see that the

Re: HDFS buffer sizes

2014-01-24 Thread Arpit Agarwal
ZE_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 si

RE: HDFS buffer sizes

2014-01-24 Thread John Lilley
: 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 mailto:john.lil...@redpoint.net>> wrote: What is the interaction between dfs.stream-buffer-size and dfs.client-write-packet-size? I see th

Re: HDFS buffer sizes

2014-01-23 Thread Arpit Agarwal
HDFS does not appear to use dfs.stream-buffer-size. On Thu, Jan 23, 2014 at 6:57 AM, John Lilley 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