Yes, the same code, the same result. In fact, the code has been running for a more one month. Before 1.5.0, the performance is quite the same, So I doubt that it is causd by tungsten.
Gen On Wed, Nov 4, 2015 at 4:05 PM, Rick Moritz <rah...@gmail.com> wrote: > Something to check (just in case): > Are you getting identical results each time? > > On Wed, Nov 4, 2015 at 8:54 AM, gen tang <gen.tan...@gmail.com> wrote: > >> Hi sparkers, >> >> I am using dataframe to do some large ETL jobs. >> More precisely, I create dataframe from HIVE table and do some >> operations. And then I save it as json. >> >> When I used spark-1.4.1, the whole process is quite fast, about 1 mins. >> However, when I use the same code with spark-1.5.1(with tungsten turn on), >> it takes a about 2 hours to finish the same job. >> >> I checked the detail of tasks, almost all the time is consumed by >> computation. >> >> Any idea about why this happens? >> >> Thanks a lot in advance for your help. >> >> Cheers >> Gen >> >> >
