Hi Could you please share more details ? We can assume it is the same hardware and same OS / JVM. What about the hadoop configuration ? Are you using Erasure Coding ?
Regards Le jeu. 12 déc. 2019 à 14:12, HarshaKiran Reddy Boreddy <[email protected]> a écrit : > Yes, Even in HDFS(3.1.1), I have seen the performance degradation compared > with 2.7.2. I have done the DFSIO test following are the details. > > Test: > > DATA SIZE: 1TB > No of Files : 1000 > File size : 1GB > > *Hadoop-3.1.1::* > > *DFSIO Write : 1420.99 sec* > > *Hadoop-2.7.2::* > > *DFSIO Write : 1297.971 sec* > > so,there is degradation compare to 2.7.2..Any pointers to this?? > > Thanks > Harshakiran Reddy > > > > > From: bilwa st <[email protected]> > Date: Fri, 22 Nov 2019 at 9:09 PM > Subject: Performance issue > To: <[email protected]> > > > Hi, > > Tera sort is slow by 9mins(26%) in 3.1.1 compared to 2.7.2 > > I could see some JIRA open for the same issue ie MAPREDUCE-6735 > > Has anyone else faced the same issue? > > Thanks, > Bilwa ST > > > > -- > *Regards* > Harshakiranreddy.Boreddy > > >
