Unfortunately, I do not know well about Gora at the moment. I'll look at it. Thanks.
On Sat, May 4, 2013 at 8:59 AM, Ikhtiyor Ahmedov <[email protected]> wrote: > As a user would like to add, maybe considering Apache Gora is good solution > for integrating with NoSQLs > On May 4, 2013 8:47 AM, "Edward J. Yoon" <[email protected]> wrote: > >> PartitioningRunner rewrites (converted to VertexWritable) records to >> particular partition files. and then, GraphJobRunner reads just >> VertexWritable. >> >> To Hama devs, >> >> BTW, I hadn't really thought about 'Range Partitioning' and >> 'integration with NoSQLs' until just now. And I just found my old >> opinion[1] on record converter. I didn't like 'Record converter'. >> >> 1. http://markmail.org/message/ol32pp2ixfazcxfc >> >> On Sat, May 4, 2013 at 7:36 AM, Jiwon Seo <[email protected]> wrote: >> > Edward, thanks for your reply. >> > >> > Right, I checked that PartitioningRunner is the only place that calls the >> > convertRecord method. >> > >> > However, it is not clear how that class is related to the GraphJobRunner >> > class. >> > The loadVertices() method in the GraphJobRunner does not call the >> > convertRecord method as in PartitioningRunner::bsp(). >> > >> > Is the GraphJobRunner::loadVertices() not used for loading vertices? >> > If it is used, how is it related to PartitioningRunner::bsp()? It would >> be >> > helpful to know the (rough) call stack from PartitioningRunner to >> > GraphJobRunner (or vice versa). >> > >> > Thanks, >> > >> > -Jiwon >> > >> >> Hi Mr.Seo, >> >> >> >> Please look at VertexInputReader.convertRecord() method. see also >> >> PartitioningRunner and RecordConverter classes[1]. >> >> >> >> 1. >> > >> http://svn.apache.org/repos/asf/hama/trunk/core/src/main/java/org/apache/hama/bsp/PartitioningRunner >> >> >> >>On Fri, May 3, 2013 at 5:49 PM, Jiwon Seo <[email protected]> wrote: >> >>> Hi, >> >>> >> >>> I'm trying to understand how vertex loading is done in hama. >> >>> >> >>> The part that I don't understand is, the relation between >> > VertexInputReader >> >>> and InputFormat. >> >>> >> >>> As far as I understand, VertexInputReader.parseVertex is the method to >> >>> initialize each vertex, but it is not clear where the function is >> called >> > in >> >>> Hama 0.6.1. >> >>> In Hama 0.6.0, the parseVertex function is explicitly called inside >> >>> GraphJobRunner::loadVertices, but in Hama 0.6.1, it is replaced with >> >>> peer.readNext(vertex, NullWritable.get()), and parseVertex does not >> seem >> > to >> >>> get called. Where is the function called? >> >>> >> >>> Thanks, >> >>> >> >>> -Jiwon >> >> >> >> -- >> Best Regards, Edward J. Yoon >> @eddieyoon >> -- Best Regards, Edward J. Yoon @eddieyoon
