Fei: You can watch this issue: HDFS-7613 Block placement policy for erasure coding groups
the solution there would be helpful to us. Cheers On Wed, Jan 14, 2015 at 11:04 AM, Fei Hu <[email protected]> wrote: > Thank you for your quick response. > > After reading the materials you recommended, my conclusion is that Hadoop > does not provide interface to customize the data placement policy. We need > to add some codes to the source package of HDFS. Is that right? > > Thanks, > Fei > > On Tue Jan 13 2015 at 10:42:27 PM Ted Yu <[email protected]> wrote: > >> See this thread: http://search-hadoop.com/m/lAh9i28K7 >> >> See also HDFS-7228 >> >> Cheers >> >> On Tue, Jan 13, 2015 at 7:33 PM, Fei Hu <[email protected]> wrote: >> >>> Hi, >>> >>> I want to customize the data placement strategy rather than using the >>> default strategy in HDFS. Is there any way to control which datanode the >>> replica is delivered to? >>> >>> Thank you in advance. >>> >>> Best regards, >>> Fei >> >> >>
