Hi Brock, But then if I rotate frequently e.g. every minute, the total number of files in a single folder of HDFS will go into thousands very quickly. I am not sure how/if that will affect HDFS namenode performance and I worry that it may suffer. I don't have a lot of experience with HDFS, do you happen to know if having thousands of files in a single directory in HDFS is common?
Thanks, Pankaj On Nov 5, 2012, at 7:30 AM, Brock Noland <[email protected]> wrote: > Hi, > > If you just did not bucket the data at all, it would be organized by > the time they arrived at the sink. > > Brock > > On Fri, Nov 2, 2012 at 6:08 PM, Pankaj Gupta <[email protected]> wrote: >> Hi, >> >> Is it possible to organize files written to HDFS into buckets based on the >> time of writing rather than the timestamp in the header? Alternatively, is >> it possible to insert the timestamp injector just before the HDFS Sink? >> >> My use case is to organize files such that they are organized >> chronologically as well as alphabetically by name and that there is only one >> file being written to at a time. This will make it easier to look for newly >> available data so that MapReduce jobs can process them. >> >> Thanks in Advance, >> Pankaj >> >> >> > > > > -- > Apache MRUnit - Unit testing MapReduce - http://incubator.apache.org/mrunit/
