My advice is to not even consider anything else or make any other changes to your architecture until you get onto a modern and maintained filesystem.
VERY VERY VERY few people are deploying anything on ReiserFS so you're going to be the first group encountering any problems. On Thu, Oct 15, 2015 at 12:28 PM, Modha, Digant < digant.mo...@tdsecurities.com> wrote: > It is deployed on an existing cluster but will be migrated soon to a > different file system & Linux distribution. > > -----Original Message----- > From: Michael Shuler [mailto:mshu...@pbandjelly.org] On Behalf Of Michael > Shuler > Sent: Wednesday, October 14, 2015 6:02 PM > To: user@cassandra.apache.org > Subject: Re: reiserfs - DirectoryNotEmptyException > > On 10/13/2015 01:58 PM, Modha, Digant wrote: > > I am running Cassandra 2.1.10 and noticed intermittent > > DirectoryNotEmptyExceptions during repair. My cassandra data drive is > > reiserfs. > > Why? I'm genuinely interested in this filesystem selection, since it is > unmaintained, has been dropped from some mainstream linux distributions, > and some may call it "dead". ;) > > > I noticed that on reiserfs wiki site > > https://en.m.wikipedia.org/wiki/ReiserFS#Criticism, it states that > > unlink operation is not synchronous. Is that the reason for the > > exception below: > > > > ERROR [ValidationExecutor:137] 2015-10-13 00:46:30,759 > > CassandraDaemon.java:227 - Exception in thread > > Thread[ValidationExecutor:137,1,main] > > > > org.apache.cassandra.io.FSWriteError: > > java.nio.file.DirectoryNotEmptyException: > > > > at > > org.apache.cassandra.io.util.FileUtils.deleteWithConfirm(FileUtils.jav > > a:135) > > > >~[apache-cassandra-2.1.10.jar:2.1.10] > <...> > > This seems like a reasonable explanation. Using a modern filesystem like > ext4 or xfs would certainly be helpful in getting you within the realm of > a "common" hardware setup. > > https://wiki.apache.org/cassandra/CassandraHardware > > https://www.safaribooksonline.com/library/view/cassandra-high-performance/9781849515122/ch04s06.html > > I think Al Tobey had a slide deck on filesystem tuning for C*, but I > didn't find it quickly. > > -- > Kind regards, > Michael > > > TD Securities disclaims any liability or losses either direct or > consequential caused by the use of this information. This communication is > for informational purposes only and is not intended as an offer or > solicitation for the purchase or sale of any financial instrument or as an > official confirmation of any transaction. TD Securities is neither making > any investment recommendation nor providing any professional or advisory > services relating to the activities described herein. All market prices, > data and other information are not warranted as to completeness or accuracy > and are subject to change without notice Any products described herein are > (i) not insured by the FDIC, (ii) not a deposit or other obligation of, or > guaranteed by, an insured depository institution and (iii) subject to > investment risks, including possible loss of the principal amount invested. > The information shall not be further distributed or duplicated in whole or > in part by any means without the prior written consent of TD Securities. TD > Securities is a trademark of The Toronto-Dominion Bank and represents TD > Securities (USA) LLC and certain investment banking activities of The > Toronto-Dominion Bank and its subsidiaries. > -- We’re hiring if you know of any awesome Java Devops or Linux Operations Engineers! Founder/CEO Spinn3r.com Location: *San Francisco, CA* blog: http://burtonator.wordpress.com … or check out my Google+ profile <https://plus.google.com/102718274791889610666/posts>
